Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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APPARATUS FOR FLOOR CLEANING AND TREATMENT
FIELD OF THE INVENTION
The present invention relates to an apparatus for the treatment, such as
cleaning, of
a surface. More specifically, one embodiment of the present invention is an
apparatus for
surface cleaning that provides a standing or sitting location for the operator
and is capable
of operating in tight spaces.
BACKGROUND OF THE INVENTION
Cleaning machines are used extensively for cleaning flooring surfaces
comprised of
tile, stone, brick, wood, concrete, carpets and other common surfaces.
Maintaining the
cleanliness of these surfaces, especially in high volume areas in commercial,
industrial,
institutional and public buildings is an ongoing and time consuming process.
The present
invention relates to a highly maneuverable floor cleaning or treatment
apparatus (hereinafter
"treatment apparatus") that supports an operator during use. More
specifically, some
embodiments of the present invention are adapted to clean, sweep, vacuum,
burnish, wax,
etc. (hereinafter "treat") a floored surface, wherein the operator is
supported by the cleaning
device, thus increasing efficiency and productivity of the cleaning operation.
As used herein,
"floored surface", or more generally "surface", encompasses areas covered by
concrete, tile,
carpet, wood, plastic, stone, turf or any other substance known in the art.
The prior devices
address many issues that arise with cleaning such floored surfaces.
Unfortunately, prior to
the present invention, there was no one device that could address many, if not
all, of the
issues that arise in cleaning various surfaces in various environments at any
given point in
time.
A. Mop & Bucket Cleaning Devices
In the past, building maintenance staff and others often treat surfaces, such
as tiled
hallways or restroom floors, using traditional mop and bucket techniques. The
bucket may
include a detachable mop ringer and may be positioned on caster wheels to
facilitate easy
movement. Depending on the cleanliness of the equipment, a worker may be able
to make
a good start in treating a floor using the mop and bucket approach. However,
soon the mop
and fluid in the bucket becomes soiled or otherwise contaminated by germs
and/or bacteria.
From that point on, each time the worker plunges the mop into the bucket and
rings the mop,
both the mop and cleaning fluid become more and more dirty/contaminated.
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B. Manually propelled cleaning devices
The basic cleaning problems associated with the prior art mop & bucket
approach
to cleaning a surfaces have generally been addressed in the art, as shown in
U.S. Patent
No. 6,206,980 to Robinson, entitled "Multi-functional Cleaning Machine". This
type of
cleaning machine generally includes a manually propelled wheeled body with two
tanks,
one concentrated chemical receptacle, a vacuum and blower motor and a fluid
pumping
system. Typically, such equipment includes only a single motor used for both
vacuuming
soiled fluid and blowing air that can be used to dry a cleaned surface. While
such
equipment is generally maneuverable and is an improvement over the earlier mop
and
bucket technology, the system is still labor intensive and slow. As a result,
productivity of
cleaning professionals, when using these type of systems is generally
decreased over what
it might be with other type of systems that are available.
C. Self Propelled Walk Behind Device
Productivity concerns have been addressed in the art by the creation of
certain
walk behind floor treatment apparatus. These apparatus typically have a scrub
deck at
machine's front and a squeegee at its rear. The squeegee has the ability to
"swing" or
follow the path of the scrub deck as the machine changes direction. This type
of
equipment is generally more efficient in cleaning large surface areas than
either the mop
and bucket or the manually propelled devices. Unfortunately, however, the
distance
between the scrub deck and squeegee is relatively great. Also, walkbehinds
typically have
relatively wide squeegees. These characteristics limit such machine's
maneuverability
and limit the doorways they can easily pass through. Typical 3' doorway allows
a
machine with no more than a 33" squeegee to fit through without removal.
Small walk behind floor cleaning apparatus typically include a scrub deck in
the middle of the machine and squeegees at the machine's rear. In this
configuration
the squeegee has little or no ability to swing or follow the path of the scrub
deck as
the machine changes direction. Small rider scrubbers typically have relatively
narrow
squeegees, and rely on "side squeegees" (unvacuumized squeegee blades)
adjacent to
the scrub deck to direct the water into the path of the main (vacuumized)
squeegee.
The problem with these side squeegees is that they do not perform very well
for very
long and tend to leave a film of water
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in turns because the vacuumized squeegee does not follow the true path of the
scrub deck,
only the path of the side squeegees (which leave the film of water). Finally,
side squeegee
are typically very heavy rubber blades and have significant down-pressure
applied to them
to direct the water - this makes them expensive and causes significant "drag"
which increases
the work for the propel unit and limits battery run-time. Thus, while more
maneuverable than
larger walk behind floor treatment machines, the small machines typically do
not clean as
well as the larger machines.
D. Storage Issues in Prior Art Devices
Further, known cleaning machines do not provide adequate onboard storage for
cleaning supplies, tools, etc. Likewise, prior art machines do not often
provide a flexible
approach to adding storage facilities for trash and the like when the need for
such arises.
Machinery that addresses these issues is therefore needed.
E. Self-propelled Ride-on Devices
Self-propelled cleaning devices are generally also well known in the field and
are
employed to treat large floored surfaces, such as tiled, concrete or carpeted
floors found in
hospitals, department stores, schools, gyms, etc. These devices generally
provide the
operator with seating from which he/she can control operation of the device.
These devices
are ideal for cleaning large, open areas because they are capable of
containing large amounts
of waste fluids and/or debris without having to repeatedly perform time
consuming fluid
replacement or debris removal. Moreover, because these devices provide the
user with
seating, the user does not become prematurely fatigued, increasing overall
worker
productivity. Unfortunately, these large ride-on machines are not particularly
well-suited for
cleaning smaller, more confined floor surfaces, which are often found in
hallways, small
rooms, or even large rooms which have many obstacles therein.
As is well known in the art, smaller self-propelled cleaning devices are also
in
existence that are ideal for cleaning the smaller rooms and hallways. However,
smaller
devices are usually pushed or pulled by an operator. Hence, the major drawback
of these
devices is that they often rely on operator strength to maneuver the device.
Even if the device
is self-propelled, it often employs manual steering. After a long shift of
walking behind a
treatment device, the operator is bound to become fatigued, wherein his or her
attention will
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deviate from the task at hand, thereby possibly resulting in uneven treatment
to the floored
area. Thus, a subsequent crew may have to return and retouch certain areas
that were not
accurately treated during the first operation. In addition, human errors
related to the amount
of time a surface is exposed to a brush, may occur when the operator lingers
over a single
area for extended period of time. This situation is never good for a floor
surface. The
devices in the art are also difficult to maneuver and often are not adapted to
operate around
tight corners, wherein pre or post cleaning operations must be performed, thus
increasing the
time and expense of the entire task.
Thus, it is a long felt need in the field of floor cleaning or treatment to
provide a
device that allows the operator to ride thereon, and which is adapted to be
used in small areas
and/or around tight corners. The following disclosure describes an improved
floor cleaning
and treatment device that is adapted for use in small areas that includes a
platform adapted
to support the operator to ensure optimum floor cleaning or treatment.
SUMMARY OF THE INVENTION
It is one aspect of the present invention to provide a floor treatment
apparatus that is
easyto maneuver. More specifically, one embodiment of the present invention is
constructed
of a chassis section that includes an enclosure that houses at least a portion
of the internal
components of the treatment device and a location for installation of devices
that are used
during cleaning operations. In addition, one embodiment of the present
invention provides
a standing, leaning or sitting location for the operator. Another embodiment
of the present
invention is equipped with a powered steering device that allows for greater
maneuverability
in areas with tight corners, thereby ensuring that more of the flooring
surface is treated
without having to perform pre or post treatment operations. More specifically,
one
embodiment of the present invention is equipped with a self-propelled wheel
and an easy to
use steering device to provide increased maneuverability around obstacles. One
embodiment
of the present invention employs at least one wheel that provides thrust
and/or steering
capability. Yet another embodiment of the present invention employs wheels
that are
substantially centered under the chassis such that the entire apparatus is
generally capable of
360 rotation without substantially traversing in any other direction, thus
allowing it to treat
tight corners of a surface. It is another aspect of the present invention to
provide a cleaning
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apparatus that is cost effective to manufacture. Various aspects of the
invention shall now
be described in more detail.
Chassis
5 One embodiment of the present invention employs a chassis section that is
designed
to protect and house the internal workings of the apparatus and provide a
location for
interconnection of auxiliary treatment devices used therewith. One embodiment
of the
present invention employs a chassis that is constructed of rigid plastic,
metal, or other
common materials used in the art. The chassis of this embodiment also is
equipped with a
platform for the operator. Alternative embodiments of the present invention
employ a
foldable, removable or stationary operator seat. In addition, other safety
features such as pads
or belts may be employed to secure the operator into the cleaning device and
thus his/her
working environment.
It is yet another aspect of the present invention to provide a chasis with a
small
envelope. More specifically, one embodiment of the present invention is small
enough to fit
into and through tight spaces. Often facilities that employ the apparatus of
the present
invention include narrow door ways, aisles and elevators. In addition,
especially in older
buildings that have been retrofitted to comply with the Americans with
Disabilities Act,
elevators are of minimal volume and lifting capability. To fit into small
elevators, the chasis
is designed to have the smallest practical envelope, a distinct advantage over
the prior art.
Also, the apparatus of one embodiment of the present invention includes
components that are
easily removable or adjustable to reduce the profile of the apparatus. Thus,
the embodiments
of the present invention may be used in various structures.
Steering, Mechanism
Another aspect of the present invention is to provide a cleaning apparatus
that is easy
to operate and maneuver. More specifically, one embodiment of the present
invention is
equipped with a steering mechanism that allows for inputs from the operator to
be efficiently
communicated to the steering wheels of the cleaning apparatus. Alternatively,
other steering
means may be used to facilitate maneuverability of the treatment apparatus,
such as joy
sticks, touch screens, buttons, remote control elements, etc.
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It is still yet another aspect of the present invention to provide a cleaning
apparatus
that is adapted to efficiently clean areas with tight corners. More
specifically, one
embodiment of the present invention is adapted to generally perform 360 turns
without
appreciable lateral motion. This embodiment of the present invention is
equipped with a
turning mechanism generally under the center of the chassis with two powered
exterior
wheels adjacent thereto that provide power to the chassis to pivot around the
centered wheel.
The powered exterior wheels may be independently controlled by joy sticks,
wherein
movement thereof send directional inputs to each wheel. One embodiment of the
invention
is equipped with at least one j oy stick wherein forward deflection will
impart forward motion,
rearward deflection will impart rearward motion, and a side-to-side deflection
will cause the
apparatus to turn. Alternatively, two joy sticks may be used in a similar
manner, wherein
rearward deflection of the left joy stick and forward deflection of the right
j oy stick will result
in a left turn, and depending on the placement of the powered wheels, perhaps
a 360 left
hand turn.
Another embodiment of the present invention utilizes a steering wheel, handle
bars,
a yoke, or similar apparatus for steering. Embodiments may also include a
power-assisted
steering mechanism.
Power Plant
It is another aspect of the present invention to provide a treatment apparatus
that is
powered by commonly used power plants. More specifically, one embodiment of
the present
invention employs an electric motor to power the apparatus. The electric motor
may be
powered by batteries, solar energy or an electrical cord attached to a
permanent power source.
Alternatively, the present invention maybe powered by an internal combustion
engine. Other
propulsion means may also be employed by the present invention without
departing from its
scope, as will be appreciated by one skilled in the art.
Floor Treatment Devices
One embodiment of the present invention employs a chassis that houses a fluid
pump
assembly and a vacuum assembly. The apparatus further includes at least two
tanks, one for
retaining a base cleaning fluid, such as water, and a second for retaining
spent cleaning
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solution, dry debris, etc. The apparatus may also include one or more
concentrated
cleaning chemical receptacles designed to hold concentrated cleaning
chemicals. The
receptacles are preferably stored within a lockable structure, adding safety
to the overall
apparatus. These agents can be added to a base cleaning fluid just prior to
application to a
surface and as desired to facilitate cleaning of various surfaces.
Tanks
As briefly mentioned above, preferably at least one tank is provided that
provides
a solution that is directed towards the flooring surface to be cleaned to
facilitate treatment.
The tank may be constructed with multiple compartments wherein waste water
from the
surface is contained prior to disposal. More specifically, one embodiment of
the present
invention employs a tank that includes a movable membrane. In this
configuration, the
clean water and/or cleaning solution is deposited on a surface and agitated.
Dirty water is
next suctioned up and deposited back into a portion of the tank, thereby
moving a
membrane accordingly to accept the dirty water. Such a configuration is
disclosed in U.S.
Patent No. 4,759,094. A similar selectively expandable fluid storage area can
be created
by utilizing a collapsible structure, which is placed inside of the primary
fluid tank. This
type of arrangement is disclosed in U.S. Patent No. 4,196,492.
Clean water can obviously come from an outside source such as a hose, rather
than be stored on board the device. However, in order to facilitate
maneuverability and
usability of the present invention, it is envisioned that the chassis will
house or hold at
least one fluid tank and perhaps a plurality thereof,
Cleaning Solutions
In one type of treatment operation, fluid from the chemical receptacles flows
through a tube to a chemical selector, which may include a metering valve. The
selector
preferably has a positive shut-off position, wherein fluid is prevented from
flowing
through the selector regardless of the fluid pressure in a fluid line. The
selector is
responsive to input from an operator selection of one of the several cleaning
chemicals.
Once a chemical is selected, it is free to flow through the chemical selector
and
appropriate amounts thereof may be
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provided to one of any number of inlets to a mixing tee. The amount of
chemical allowed
to flow may be adjusted by a metering valve built into the selector or
separate from the
selector, in a known fashion. A base cleaning fluid, such as water, may flow
from a fluid
tank and through a separate tube to a second leg of a mixing tee. The cleaning
fluid and
concentrated cleaning chemical then mix within the mixing tee to create a
cleaning solution.
That solution may then be passed through the selector outlet to a pressure
pump, wherein the
cleaning solution may be pressurized and communicated via appropriate tubing
to a
dispensing device. The pump, which draws fluid to and through the selector,
also preferably
includes a bypass system to facilitate regulation of pump pressure. Use of the
pump to draw
fluid is preferred as it does not create unwanted pressures in the fluid lines
and the system,
in general, is not subject to gravity feeding of fluid.
A solution may be applied to a surface using any type of dispensing device. In
a
preferred embodiment, the dispensing device or associated solution lines or
tubes include an
adjustable valve, which may be used to adjust the pressure and flow of
solution allowed to
exit the dispensing device. Because of the adjustability, the apparatus may be
utilized as a
pre-cleaner for various carpet treatments, including spotting or other
treatments.
By use of the chemical selector, two or more receptacles of floor treatment
chemicals
may be fluidly connected to a mixing tee. In operation, a user is capable of
creating any
number of cleaning solutions without the need for adding receptacles or
switching chemical
feed lines from one receptacle to another or without changing metering tips
that are easily
misplaced, incorrectly interconnected, or damaged. Thus, the treatment process
is safer
because there is less chemical handling. Similarly, use of a metering valve
will allow the
operator to create a very precise floor treatment solution.
It is preferred that one-way check valves be used throughout the apparatus.
For
instance, check valves may be included in: delivery lines that supply cleaning
chemicals to
the metering tee; lines that supply water to the metering tee; lines that
supply cleaning
solution to the pump; lines that supply cleaning solution to the spray gun; or
in the metering
tee, itself. The check valves prevent reversal of fluid and prevent
contamination of one fluid
with another.
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Blower
The treatment apparatus also may include a modular blower assembly. The blower
assembly maybe hand-held and operate completely apart from the overall
cleaning machine.
The blower assembly may be used to dry areas physically separate from where
the apparatus
is stored. Because the blower assembly possibly is separate from the
apparatus, it may also
be used for other blowing functions, such as blowing leaves, grass, dirt or
other debris. The
blower assembly may be used with a detachable hand nozzle, a flexible nozzle,
an extension
wand, etc., thereby increasing the overall flexibility of the blower assembly.
The blower
assembly may utilize an integrated on/off switch and be powered by electricity
supplied by
any typical extension cord, including the power source of the apparatus. The
blower may be
configured to be stored on the apparatus in one of any number of convenient
ways. It will
be appreciated by one skilled in the art that having a modular blower assembly
of this type
is very beneficial to the overall functionality of a multifunctional floor
treatment apparatus.
Storage
Another aspect of one embodiment of the present invention is that the chassis
includes bins, trays, bays and other storage devices preferably within easy
reach of the
operator. The storage devices provide the operator with substantial
flexibility when cleaning
a large building or area that has many types of surfaces that may need
treatment. Also, the
apparatus provides for modular trash/supply bins that may be added to or
removed from the
apparatus quickly and easily so that the machine can be configured for one of
any number of
floor treatment activities.
Primary Pump
It is yet another aspect of the present invention to provide an apparatus
equipped with
a secondary fluid pump that supplies fluid to the main fluid pump prior to
ignition. More
specifically, one embodiment of the present invention includes a secondary, or
priming
pump, which is activated prior to the activation of the main fluid pump. Often
it is desirable
to introduce fluid into a main fluid pump prior to that pump's activation,
thereby expelling
trapped air that may cause damage to the main fluid pump motor from vapor lock
or
cavitation, for example. This priming process may be conducted manually, but
that is time
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consuming, wherein the user manually adds fluid to the pump or bleeds the air
therefrom.
Alternatively, and preferably, one embodiment of the present invention is
equipped with a
secondary pump that is activated for a brief moment when the fluid discharge
apparatus is
initially activated, thus ensuring that the main fluid pump will be
substantially free of trapped
5 air upon activation.
Squeegee
It is another aspect of the present invention to provide a device that
includes a
squeegee adjacent to the floor treatment device, both generally in the middle
of the machine.
10 The squeegee effectively swings, or follows the path of the floor and does
not rely on
unvacuumized side squeegees to channel water to the main vacuumized squeegee.
Thus, it
offers as good or better fluid pick-up when the apparatus is turning than is
capable with a
walk behind scrubber, and far superior than typical small riders since it does
not rely on
smearing side squeegees. One embodiment of the present invention, employs a
squeegee that
pivots about the steering axis with a linkage that is supported by a roller
and track
mechanism. The absence of side squeegees mean less drag and better use of
available
energy. In addition, some embodiments of the present invention include an
adjustable
squeegee, a skirt or a shroud that minimally contacts the floor, thus reducing
drag and sparing
battery charge. Alternatively, some embodiments of the present invention
include stops that
contact the floor, without marring the same.
Use of the Device
Various aspects of the inventions discussed briefly above combine to provide
an
effective and efficient tool, useful in the treatment of numerous areas in and
around
commercial, industrial, institutional and public buildings. Moreover, due to
the various
aspects of the present invention, a sanitation maintenance worker may clean a
particular room
or facility more efficiently than previously possible. The present invention
may be used in
various cleaning operations such as burnishing, vacuuming, scrubbing, sanding,
waxing,
sweeping, sealing, painting, polishing, etc. In order to accomplish these
tasks, the present
invention may be equipped with various combinations of floor treatment
devices. More
specifically, one embodiment of the present invention is equipped with a
plurality of brushes
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and squeegees to agitate and collect debris from a flooring surface. In
addition, suction
mechanisms may be employed such that fluids and/or dry particulate matter are
transferred
into a container. It is also envisioned that one embodiment of the present
invention include
at least one solution applicator positioned adjacent to the scrub brushes,
wherein solution is
injected onto the surface after, or prior to, agitation by the brushes. The
debris-entrained
solution is then collected by the squeegee and subsequently vacuumed into the
holding tank
or expelled out of the chassis to an outside reservoir. The brushes and/or
solution used in this
embodiment may be adapted to clean, sweep, paint, burnish, sand, strip,
varnish or wax a
floor. It will be appreciated by one skilled in the art that any type of
solution adapted to treat
any flooring surface may be employed without departing from the scope of the
present
invention.
It is yet another aspect of the present invention provide a floor treatment
apparatus
that can be used in various floor maintenance operations. More specifically,
one embodiment
of the present invention is adapted for interconnection to a plurality of
devices to perform a
variety of floor treatment operations. It is envisioned that one embodiment of
the present
invention be capable of quick removal of certain treatment devices such that
different devices
may be then added to quickly change the scope of the apparatus, thereby
providing a device
adapted to scrub, clean carpets, wax floors, burnish floors, remove wax or
varnish from
floors, vacuum, etc. Thus, it is contemplated, that this system may be used
for a plurality of
cleaning or floor treatment operations.
Remote Control
It is yet another aspect of the present invention to provide a highly mobile
floor
treatment apparatus that can include a car washer assembly. As will be
appreciated by those
skilled in the art, if so configured, the device could include a car washer
wand connected to
appropriate pumps and could be utilized to pre-clean heavily soiled areas
prior to final
cleaning with use of the device.
It is still another aspect of the present invention to provide a floor
treatment apparatus
that does not require direct contact with an operator to perform its tasks.
More specifically,
one embodiment of the present invention is adapted to be remote controlled.
This
embodiment of the present invention is equipped with remote control mechanisms
and
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software currently known in the art, such as taught by U.S. Patent No.
6,625,843 to Kim
et al.. In addition, this embodiment of the present invention may be equipped
with the
plurality of cameras such that offsite monitoring and control may be
performed. In a
related embodiment of the present invention, software is installed in the
cleaning
apparatus such that human contact or monitoring is not required. More
specifically, one
embodiment of the present invention is adapted to learn its environment as it
operates in
an area such that remote controlling is not required. Alternatively, it is
well within the
scope of this invention to preprogram the dimension of floored surfaces into
the smart
treatment device, wherein the device is parameterized with the surface
dimensions before
the task is initiated. Apparatus of this type are known in the art, such as
the RoombaTM
device by iRobot Corporation, aspects of which are described in U.S. Patent
Nos.
6,594,844 and 6,535,793.
Safety
It is another aspect of the present invention to provide a cleaning apparatus
that is
safe and comfortable to use. More specifically, one embodiment of the present
invention
includes an operator platform. This platform allows the operator to stand on
the device
during the treatment operation, thus increasing productivity and lowering the
chances of
injury or fatigue to the operator. In another embodiment of the present
invention, a seat is
provided wherein the operator may comfortably sit while completing his or her
task.
Other safety and comfort features such as rails, pads, and belts, may be
provided
depending on the needs of the operator.
Thus, it is one aspect of the present invention to provide a floor treatment
apparatus which comprises:
a chassis with a lower surface, a front surface, an upper surface, a rear
surface, a
left surface and a right surface, wherein a platform is provided that is
adapted to support
the weight of an operator;
a powered wheel operably connected adjacent the lower surface of the chassis,
the
powered wheel being capable of at least one of transitioning and rotating the
floor treating
apparatus;
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a steering mechanism adjacent to the upper surface that is accessible by the
operator;
an operable floor treating device connected adjacent to the lower surface of
the
chassis;
an operable debris collection device connected adjacent to the lower surface
of the
chassis; and
wherein an operator controls the floor treatment apparatus from the platform.
The Summary of the Invention is neither intended nor should it be construed as
being
representative of the full extent and scope of the present invention. Some
aspects of the
present invention are set forth in various levels of detail in the Summary of
the Invention, as
well as in the attached drawings and the Detailed Description of the
Invention. No limitation
as to the scope of the present invention is intended by either the inclusion
or non-inclusion
of elements, components, etc. in this Summary of the Invention.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and constitute a part of
the
specification, illustrate embodiments of the invention and together with the
general
description of the invention given above and the detailed description of the
drawings given
below, serve to explain the principles of these embodiments.
Fig. 1 is a perspective view of one embodiment of the present invention
showing an
operator standing on the platform thereon;
Fig. 2 is a perspective of an alternate embodiment of the present invention
that is
configured for fluid extraction, and which is controlled by at least one joy
stick;
Fig. 3 is a perspective view and alternative embodiment of the present
invention that
is configured for burnishing operations;
Fig. 4 is a perspective view of an alternative embodiment of the present
invention that
is equipped with moveable brushes that are adapted to swing out to more
efficiently treat a
floor surface, and which also includes a wand for selectively cleaning
difficult to reach areas;
Fig. 5 is a perspective view of an alternative embodiment of the present
invention that
is designed to rotate about an 360 axis without significantly traversing in
other directions;
Fig. 6 is a perspective view of an alternative embodiment of the present
invention that
is designed to reach tight areas of floor surface;
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Fig. 7 is a detailed perspective view of the embodiment shown in Fig. 6,
showing the
steering wheel, brush, and squeegee assembly used therewith;
Fig. 8 is a top plan view of a flooring surface;
Fig. 9A is a bottom plan view showing configurations of steering, cleaning,
and power
mechanism;
Fig. 9B is a bottom plan view showing configurations of steering, cleaning,
and power
mechanism;
Fig. 10 is a bottom plan view of an alternate embodiment of the present
invention
showing an alternate configuration of steering, cleaning, and power
mechanisms;
Fig. 11 is a perspective view of an alternative embodiment of the present
invention that is
adapted to be remotely controlled;
Fig. 12A is a bottom plan view of a rotatable squeegee for use in one
embodiment of the
present invention;
Fig. 12B is a bottom plan view of a rotatable squeegee for use in one
embodiment of the
present invention;
Fig. 12C is a bottom plan view of a rotatable for use in one embodiment of the
present
invention;
Fig. 12D is an elevation view of one embodiment of the present invention;
Fig. 12E is a partial rear perspective view of one embodiment of the present
invention;
Fig. 12F is a detailed perspective view of one embodiment of the present
invention;
Fig. 12G is a detailed perspective view of one embodiment of the present
invention;
Fig. 13A is a detailed perspective view of one embodiment of the present
invention;
Fig 13B is a perspective view showing a waste tank cover and interconnected
strainer
basket;
Fig 13C is a rear perspective view showing the waste tank cover and
interconnected
strainer basket;
Fig. 13D is a partial cross-sectional view of a waste fluid bag and drain hose
interconnection of one embodiment of the present invention;
Fig. 14A is a partial perspective view of one embodiment of the present
invention
showing a plurality of batteries wherein the rear cowling has been removed for
clarity;
Fig. 14B is a rear perspective view of one embodiment of the present invention
showing
the rear cowling;
CA 02559485 2011-11-15
14A
Fig. 14C is a detailed perspective view of showing the rear cowling of one
embodiment
of the present invention;
Fig. 14D is a rear perspective view of the rear cowling of one embodiment of
the present
invention;
Fig. 15 is a perspective view of a control panel and handles of one embodiment
of the
present invention;
Fig. 16 is a perspective view of an operator platform with a plurality of
switches of one
embodiment of the present invention;
Fig. 17A is a perspective view of a seat used with some embodiments of the
present
invention;
Fig. 17B is an elevation view of the seat shown in Fig. 17A;
Fig. 18A is a front elevation view showing the front cowling of one embodiment
of the
present invention;
Fig. 18B is a side elevation view showing the cowling shown in Fig. 18A;
Fig. 18C is a top plan view of Fig. 18A;
Fig. 18D is a rear elevation view of Fig. 18A;
Fig. 19A is a top plan view of the floor cleaning apparatus of one embodiment
of the
present invention;
Fig. 19B is a partial cross-sectional view of Fig. 19A; and
Fig. 20 is a right elevation view of one embodiment of the present invention
showing the
waste water return hose.
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To assist in the understanding of the present invention the following list of
components and associated numbering found in the drawings is provided herein:
Component #
Floor treating apparatus 2
5 Platform 4
Operator 6
Chassis 8
Bottom surface of chassis 10
Brush 12
10 Rotating brush 13
Scrubber 14
Squeegee 16
Wheel 18
Steering wheel 20
15 Joy stick 22
Handle Grip 24
Powered wheel 26
Burnishing pad 28
Swinging brush 30
Wand 32
Hose 34
Swing arm 36
Bearing 38
Track 40
Pivot point 42
Handle 44
Cam 46
Strainer basket 48
Waste tank cover 49
Waste fluid intake 50
Main Storage Tank 51
Clean fluid intake 52
Fitting 54
Flange 56
Waste fluid bag 58
Mandrill 60
Drain hose 62
Band Clamp 64
Rear cowling 66
Battery 68
Tray 70
Drink holder 72
Cowling pad 74
Control panel 76
Fastener 77
Operator presence switch 80
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16
Component #
Throttle 82
Seat 84
Adjustment Mechanism 85
Hook 86
Front cowling 88
Light 89
Vacuum fan 92
Vacuum exhaust channels 94
Waste H2O return hose 96
Hose channel 98
Tip over stops 100
5 It should be understood that the drawings are not necessarily to scale. In
certain
instances, details which are not necessary for an understanding of the
invention or which
render other details difficult to perceive may have been omitted. It should be
understood, of
course, that the invention is not necessarily limited to the particular
embodiments illustrated
herein.
DETAILED DESCRIPTION
Referring now to Figs. 1-20 an apparatus 2 for cleaning or otherwise treating
a floor
surface is shown. More specifically, one embodiment of the present invention
includes a
chassis 8 with a platform 4 that is adapted to support the weight of an
operator 6, thus
increasing the efficiency of the entire floor treatment operation. In
addition, various cleaning
or floor treatment components maybe interconnected to the bottom surface 10 of
the chassis,
such as brushes 12, scrubbers 14, squeegees 16, vacuum shoes, etc.
The chassis 8 also includes a plurality of wheels 18 operably interconnected
to the
bottom surface 10 to enable steering and provide stability. It is contemplated
that the
operator 6 will stand on the platform 4 and steer the apparatus 2 with either
a steering wheel
20 or other type of steering mechanism, such as a joy stick 22. Such an
embodiment of the
present invention enables the floor surface to be cleaned or otherwise treated
more efficiently,
since the operator 6 does not have to push or pull an often heavy apparatus 2.
In addition,
since the human component of powering or otherwise moving the apparatus 2 is
omitted,
more consistent flooring treatment is achieved, thereby saving materials and
reducing costs
of the entire operation.
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17
Referring now to Fig. 1, one embodiment of the present invention is shown.
More
specifically, a chassis 8 which includes the platform 4 adapted to support an
operator 6 during
the floor treatment operation is shown. The operator 6 preferably stands on
the platform 4
that is generally parallel to the flooring surface. Preferably, the platform 4
is tilted, rear edge
higher than the front edge, between about 3 to 8 degrees to increase
ergonomics. However,
as it will be appreciated by one skilled in the art, other support devices,
such as seats, which
may be operably folded into the chassis 8, maybe provided to increase the
comfort level of
the operator 6. In addition, the embodiment of the present invention shown in
Fig. 1 is
equipped with a steering mechanism, such as a wheel 18, that allows the
operator 6 to easily
maneuver the apparatus 2 around the flooring surface.
The chassis 8 is constructed of any material, but preferably hard plastic will
be used
to reduce the weight of the apparatus 2. As shown herein, a plurality of
wheels 18 are
operably interconnected to the rear of the apparatus 2 to provide stability
and perhaps power
for locomotion. In addition, a squeegee 16 is included that is adapted to
extract or funnel
water or debris to a location where it is extracted via vacuum into a
container generally, but
not always, located at least partially inside the chassis 8. Further, this
embodiment of the
present invention includes a brush 12 that is used to agitate the flooring
surface to loosen
dirt, wherein spray nozzles may be employed situated behind the brush 12 to
treat the
flooring and capture the dirt so that it can be gathered by the squeegee 16
and suction system
of the apparatus 2.
Referring now to Fig. 2, an alternate embodiment of the present invention that
is used
mainly for fluid extraction is shown. This embodiment of the present invention
is similar to
the apparatus described above, however alternate components are interconnected
to the
bottom surface 10 of the chassis 8 such that the apparatus is adapted to
efficiently capture
fluids or debris deposited on a floored surface. More specifically, this
embodiment of the
present invention is equipped with at least one brush 12 adapted to agitate
water and/or debris
and a squeegee 16 that is positioned adjacent to the rear surface of the
chassis 8 that contains
fluid and debris as the apparatus 2 moves forward. In one embodiment of the
present
invention, a suction device, such as a vacuum shoe, is positioned near the
squeegee 16 such
that dirty water is vacuumed from the surface and transferred back into a tank
situated inside
or adjacent to the chassis 8. Alternatively, another embodiment of the present
invention is
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18
provided with a squeegee 16 with a plurality of suction holes that are the
terminus of conduits
that transport waste water to the storage tank.
In the illustrated embodiment, the operator 6 is able to control the apparatus
2 with
a plurality of joy sticks 22. In addition, hand grips 24 are provided on the
sides of the
operator 6 to increase safety. Further, this embodiment of the present
invention employs
powered wheels 26 that allow the entire system to rotate on a single vertical
axis without
substantially transitioning in other directions. More specifically, this
embodiment of the
present invention is capable of performing a 360 turn, which aids cleaning of
tight spaces.
An alternate embodiment of the present invention that is used for burnishing
is shown
in Fig. 3. This embodiment of the present invention includes a burnishing pad
28 operably
interconnected to the bottom surface of the chassis 10. As before, the
operator 6 stands on
a platform 4 built into the chassis 8. One skilled in the art will appreciate
that this
embodiment of the present invention may also include a device for suctioning
debris left over
from the burnishing process, such as dust or wax particulates, for example.
Referring now to Fig. 4, an alternate embodiment of the present invention that
employs swinging brushes 30 is shown. This embodiment of the present invention
is very
similar to those described above, however the brushes 30 used to agitate,
scrub, or burnish
are rotatably interconnected to the bottom surface 10 of the chassis 8. More
specifically, the
brushes 30 of this embodiment are capable of independently folding inwardly,
thereby
efficiently cleaning the interior portion of a floor when the apparatus is
operating near a
vertical surface such as a wall. As shown herein, the brushes 30 are
independently movable
and preferably spring loaded outward such that contact with a vertical surface
causes the
brush 30 to fold under the chassis 8. Alternatively, as one in the art will
appreciate, the
orientation of the brushes may be controlled by the operator. In addition, a
wand 32
interconnected to a hose 34 may also be employed with this embodiment of the
present
invention to allow for selective application of cleaning solution or suction.
Referring now to Fig. 5, another embodiment of the present invention that
utilizes
centered powered wheels 26 is shown. More specifically, this embodiment of the
invention
is similar to those described above, however it is equipped with a plurality
of wheels 26 that
allow a 360 turning capability. This embodiment of the present invention is
also similarly
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19
adapted for cleaning the surface of a floor with a brush 12 or a plurality
thereof that is used
to agitate the dirt wherein a squeegee contains and suctions debris into a
container.
Referring now to Figs. 6-8, an alternate embodiment of the present invention
is shown
that is equipped with a wheel 18 with brushes 12 therearound for cleaning in
all directions.
This embodiment of the present invention is equipped with brushes 12 that
allow for cleaning
or agitation of the flooring surface in any direction the apparatus 2 is
moving, thus efficiently
cleaning flooring without having to make multiple passes over the surface.
Referring now to Fig. 9, one configuration of cleaning components
interconnected to
the bottom surface 10 of the chassis 8 is shown. More specifically, one
embodiment of the
present invention is adapted to either sweep or clean a floor. In the
illustrated embodiment,
a presweeping brush 12 agitates the carpet or hardwood floor to loosen debris.
Next, rotating
scrubbing brushes further agitate the surface and perhaps add fluid and
cleaning solution
thereto to help loosen and contain any loose debris. Finally, a squeegee 16
and preferably a
suction system is provided that captures the dirty water and as the apparatus
is moved
forward. As shown herein, the drive unit is the center wheel 26, which is also
adapted to
selectively rotate upon steering commands from the operator 6.
Fig. 9B shows a configuration of cleaning components interconnected to the
bottom
surface 10 of the chassis 8 similar to what was shown in Fig. 9A. The
difference, however,
is that the pre-sweeping brush 12 has been replaced by three scrub brushes or
three rotating
brushes, 13A, 13B and 13C that may be used to either sweep, burnish or
combinations
thereof a floor surface. The brushes can rotate at speeds desired by the
operator or at
preselected speeds and in directions selected by the operator or in pre-
selected directions.
Referring now to Fig. 10, an alternate configuration of the cleaning
components
interconnected to the bottom surface 10 of the chassis 8 is shown. More
specifically, this
configuration is substantially similar to that shown above in Fig. 9, however,
the drive
mechanism of the apparatus is a transaxled power plant that provides power to
the rear
wheels 26, wherein the steering is performed by a front wheel.
Referring now to Fig. 11, yet another embodiment of the present invention
performs
a floor treatment operation without the need of physical human contact is
shown. More
specifically, this embodiment of the present invention is remote controlled or
otherwise
intelligent such that it cleans a floored surface without the direct contact
of an operator. This
CA 02559485 2011-11-15
embodiment of the present invention may be configured for any task, such as
scrubbing,
sweeping, vacuuming, burnishing, carpet cleaning, waxing, surfacing, cleaning,
etc. It is
envisioned that the operator be in a separate location, perhaps offsite from
the actual cleaning
5 operation, and aided by remote viewing devices. Alternatively, one
embodiment of the
present invention is programmed with the ability to automatically treat a
floor surface,
wherein the dimensions of the surface are either programmed into or learned as
the apparatus
is in use, thereby alleviating any need for human contact with the apparatus.
This
embodiment of the present invention maybe deployed from a storage location
automatically
10 wherein quick disconnects to fluid sources or waste receptacles are
remotely joined to it such
that filling and emptying tanks or waste containers inside the chassis 8 is
done without the
need of a human operator as well. This embodiment of the present invention may
be used in
areas where it is dangerous for humans to operate, such as nuclear power
plants, areas where
asbestos exposure is likely, etc.
15 Referring now to Figs. 12A-G, a squeegee 16 for use in one embodiments of
the
present invention is shown. More specifically, some embodiments of the present
invention
include a pivot mechanism that allows the squeegee 16 to remain in place when
the floor
treating apparatus 2 is turning. Thus, the amount of fluid extracted when the
apparatus 2 is
making a tight turn is increased. In the illustrated embodiment, the squeegee
16 is connected
20 to a swing arm 36 that pivots about a point adjacent to the front wheel 18
of the apparatus.
The swing arm 36 is supported via rollers or beatings 38 on a track 40 that
maintain the
squeegee's 16 vertical position relative to the floor. Upon making a right or
left hand turn,
friction will tend to keep the squeegee 16 in a straight line, following the
original path of the
vehicle. Once a new line of travel is established, the squeegee 16 will fall
back in place
substantially under the apparatus 2. Fig. 12a shows the squeegee 16 in its
upmost left
position, while Fig. 12c shows the squeegee in its upmost right position. Fig.
12b shows the
squeegee in a neutral position while Fig. 12d shows the squeegee in a neutral
position but
from a side view.
The squeegee 16 of one embodiment of the present invention is provided with a
plurality of wheels that interface with the floor to maintain the vertical
clearance of the
squeegee assembly. In addition, side rollers may be provided that prevent the
squeegee 16
from contacting a vertical surface, such as a wall. These wheels and various
portions of the
CA 02559485 2011-11-15
21
squeegee assembly maybe selectively adjustable such that the width of the
squeegee 16 and
the placement of the wheels (squeegee height) may be altered at will.
As shown herein, the swing arm 36 connects to a pivot 42 that utilizes the
momentum
of the squeegee 16 to swing it from the apparatus 2. However, one skilled in
the art will
appreciate other methods of transitioning the squeegee 16 from the floor
treatment
apparatus 2 may be utilized without departing from the scope of the invention.
More
specifically, a motorized system maybe employed that is in communication with
the steering
system of the vehicle such that rotation of the steering wheel will swing the
squeegee 16
away from the apparatus 2 in a predetermined manner.
An actuation system that selectively raises the squeegee 16 from the floor may
also
be included as shown in Fig. 12E. In accordance with some embodiments of the
present
invention, a handle actuated leverage system 44 is used and is in mechanical
communication
with a cam 46. The cam allows the user to apply minimal force to the handle 44
adjacent to
the control panel to raise and lower the squeegee 16. One skilled in the art
will also
appreciate that this function may be performed alternatively with a motor.
Referring now to Figs. 13A-D, a recovery tank strainer basket 48 of one
embodiment
of the present invention is shown. Recovery tanks of some embodiments of the
present
invention are constructed out of resiliently deflectable material, such as a
plastic bag. The bag
is inserted into the clean fluid tank 51 of the apparatus. Once the clean
fluid is transferred to
the floor treatment tool of the apparatus, waste water may be suctioned into
the waste fluid
tank, thus expanding the bag and occupying the space once occupied by now
dispensed clean
fluid. Often, small metal shavings, wood splinters, glass, etc., may be
suctioned with the
waste fluid and deposited into the waste fluid tank, which may produce rips or
tears in the
bag and ultimately lead to leakage and contamination of the cleaning fluid.
Thus, it is
desirable to have a system that captures any dangerous debris such that it
does not come in
ccntact with the waste fluid tank. One embodiment of the present invention
thus includes a
strain basket 48 connected to the cover 49 of the waste fluid tank. In the
illustrated
embodiment, a generally rectangular straining device constructed of a rigid
material with a
plurality of apertures therethrough is provided. As the waste water is
deposited into the tank
through the cove; any large debris is captured by the strain basket 48. One
skilled in the art
will appreciate that any sized aperture may be employed to dictate the size of
debris that is
CA 02559485 2011-11-15
22
captured. Also, it should be specifically understood that any shape of strain
basket 48 may be
used without departing from the scope of the invention.
Referring now specifically to Fig. 13D, a fluid discharge system that is
connected to
the waste water tank 58 of one embodiment of the present invention is shown.
More
specifically, a fitting 54 with a flange 56 may be used that is connected to
the main storage
tank 51 of the apparatus. Preferably, the fitting 54 is spun at a high rate of
speed and
engaged with an aperture in the tank 51, thus creating friction induced heat
between the two
surfaces and welding them together. The opening of the waste water bag 58 is
then fed
through the fitting 54 and a mandrill 60 is added to sandwich the waste water
bag 58
therebetween. The mandrill 60 is made out of a rigid material, such as
aluminium to ensure
an open flow path. A drain hose 62 is slid over the outer surface of the
fitting 54 and is
secured with a clamp 64. One skilled in the art will appreciate that the drain
hose 64 is
generally capped during use, wherein the user disconnects the cap to drain the
waste water
from the bag 58. To ensure that the bag 58 is entirely empty, a new solution
may be added
to the tank, thus squeezing the bag 58 to expel all the waste water contained
therein.
Referring now to Figs. 14A-D, the rear portion of the floor treatment
apparatus 2 is
shown. More specifically, the rear of the apparatus 2 includes a removable
cowling 66. The
cowling 66 of the present invention is capable of selective rotation about an
axis parallel to
the rear axle of the apparatus 2. Alternatively, the rear cowling 66 may be
completely
removable. This aspect of the present invention provides the ability to access
batteries 68
that may provide power to the apparatus 2. The batteries 68 may reside on a
removable
tray 70 that is slidingly engaged to the apparatus 2, thus providing easy
access for
maintenance. The tray 70 resides on tracks that interface with a plurality of
wheels,
bearings, etc. The tray also includes a locking feature that securedly
maintains the
batteries 68 inside the vehicle. The rear cowling 66 also includes other
features, such as a
cavity for securing various items and drink holders 72. A pad 74 may also be
included that
provides greater protection and comfort to the user.
Referring now to Fig. 15, a control panel 76 and associated structure of one
embodiment of the present invention is shown. Embodiments of the present
invention
include a control panel 76 that includes minimal fasteners 72 for
interconnection to the floor
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23
treatment apparatus 2. That is, thumb screws, or similar type of fasteners may
be included
such that quick and easy removal of the control panel 76 may be achieved to
facilitate repair.
Embodiments of the present invention also include hand grips 24 adjacent to
the
control panel 76 to provide support for the operator. More specifically,
during tight turns the
inertial forces acting upon an individual may cause an operator to fall. Hand
grips 24, which
may be integrated onto the chasis of the apparatus, will give the operator a
place to hold onto
the device for added comfort and provide an additional safety feature. In
addition they
provide support when operating control switches located adjacent to handle
grip.
Referring now to Fig. 16, the platform 4 of one embodiment of the present
invention
is shown. More specifically, one embodiment of the present invention includes
a platform
4 with an operator presence switch 80, a platform switch and a throttle 82.
The platform 4
also may include a suspension system and be cushioned to increase operator
comfort. In
addition, the platform 4 may be foldable such that the envelop of the
apparatus may be
selectively reduced.
The operator presence switch 80 of one embodiment of the present invention is
designed to act as a safety feature that interrupts the throttle pedal when
not depressed. This
ensures that the operator has both feet positioned on the platform when the
machine is in use.
Upon deactivation of the switch, for example if the operator removes a foot
from the switch,
a neutral mode may be engaged such that no power or forward or rearward motion
of the
device is possible. In addition, the operator presence switch 80 may ensure
that sufficient
weight is maintained on the platform at all times as a safety feature.
In the typical use, the platform switch is in operable connection with the
platform,
such that it is activated when the operator stands on the platform. The
operator must then
engage a reset device, preferably on the control panel, to initiate motion.
The purpose of the
platform switch and reset switch is to act as a safety feature such that the
machine does not
immediately move when the operator steps on to the peddle platform. Upon
deactivation of
the switch, for example if the operator steps from the apparatus, a neutral
mode may be
engaged such that no power and forward or rearward motion is possible.
The throttle 82 of some embodiments of the present invention is adapted to
selectively increase or decrease the speed of the apparatus depending on the
desires of the
operator. More specifically, various speed ranges may be included: neutral,
first, second,
CA 02559485 2011-11-15
24
third, reverse, etc. (or slow, medium, fast, etc.). In some embodiments,
cleaning operations
are performed at slow speeds, while transportation from location to location
is performed at
higher speeds. When the operator sets the speed range to first, for example,
the activation of
the throttle 82 will propel the apparatus within that speed range, such that
it can not transition
from the first range to the second range without a manual shift of the range.
Thus,
embodiments of the present invention include a hand speed range selector,
wherein the
throttle 82 simply turns the desired speed range to an activated mode. The
neutral mode may
also be set by the operator, wherein no amount of throttle 82 engagement will
increase the
speed of the apparatus. In addition, as mentioned briefly above, when the
operator removes
his or her foot from the operator presence switch 80, the apparatus
automatically disengages
the throttle. One skilled in the art will appreciate however, that a throttle
82 maybe provided
that provides selective speed increments, such as employed on an automobile,
without
departing from the scope of the invention.
Embodiments of the present invention also include a braking mechanism. For
example, when an operator removes his or her foot from= the operator presence
switch 80,
throttle, or disengages the platform switch, a braking mechanism maybe
employed such that
any motion of the apparatus automatically or gradually ceases. The braking
mechanism may
be electro mechanical, mechanical or hydraulic. Alternatively, the foot brake
may be
provided adjacent to the throttle 82 or operator presence switch 80 that
provides the same
halting capability. Further, hand or emergency brakes may be employed adjacent
to the
control panel of the apparatus.
Referring now to Figs. 17A and B, a seat 84 of one embodiment of the present
invention is shown. More specifically, embodiments of the present invention
include a
selectively connectable seating device 84 for engagement with the chassis to
increase the
operator comfort. Seats 84 of some embodiments of the present invention are
selectively
adjustable 85, thus making them easy to accommodate any sized individual. In
operation, a
receiver hitch, or similar connection mechanism, is connected to the rear
portion of the
platform 4 and a mating device for interconnection to the receiver hitch, or
other device, is
provided on the seat 84. The seat 84 may also include a plurality of hooks,
shelves, cup
holders, etc. for the securement of cords, bags, or any other type of cleaning
or comfort
related item. Further, the receiver hitch may be used when the seat 84 is
engaged or not
engaged, for example, to
CA 02559485 2011-11-15
transport other items such as a supplemental wheeled device that may
accommodate extra
power sources, cleaning supplies, tanks, etc.
Referring now to Figs. 18A-D, a tank 50 of one embodiment of the present
invention is
5 shown. Some embodiments of the present invention include a tank 50 that is
equipped with a
plurality of lights 80 and/or horns that facilitate cleaning and/or act as
additional safety features.
Alternatively, lights maybe integrated into bumpers positioned adjacent to the
tank 50 or on the
sides of the apparatus.
Although not shown, a filter may be provided in fluid communication with the
fluid
10 pump. This filter is designed to capture any debris that may adversely
affect the operation of the
pump. Unfortunately on many cleaning machines, the filter is placed in a hard
to access location,
such that repair or monitoring thereof is very difficult. Thus, one embodiment
of the present
invention includes a filter that is situated on the outer surface of the
cowling, perhaps on the
control panel. Thus, the operator has ample opportunity to monitor the
integrity of the filter and
15 make quick repairs when necessary.
Referring now to Figs. 19A and B, a vacuum fan 92 which is connected to the
front
cowling 88 of one embodiment of the present invention is shown. More
specifically, a vacuum
fan 92 provides suction to remove debris filled fluids from the foot The fan
92 is preferably
situated under the control panel 76 of the vehicle, such that the intake
cooling air that is drawn in
20 by the vacuum fan 92 is channeled adjacent to the control panel 76 to cool
componentry
associated therewith.
In addition, the tank 50 may be made out of a formable material such that
exhaust
channels 94 maybe machined or molded into the tank 50. The channels 94 direct
the exhaust air
from the vacuum 92 to an exit muffler of the apparatus. The channels 94 also
act as a baffle to
25 remove noise energy from the exhaust gases, thus making the entire system
more quiet.
Referring now to Fig. 20, a waste fluid return hose 96 is shown. More
specifically, one
embodiment of the present invention decreases its profile by inserting the
waste water hose 96
into a hose channel 98 that is integrated into the outside surface of the
apparatus 2. The hose 96
being situated on the outside also has the added advantage of making it very
accessible, such that
it can be removed and inspected for clogs or breaches.
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Further, some embodiments of the present invention are provided with tip over
stops
100 adjacent to the front corners of the apparatus. The stops 100 may be
replaceable and
ensure that the apparatus does not tip over during tight turns. The tip over
stops 100 are
generally constructed out of a material that is harmless to flooring, such as
Teflon, silicone,
rubber, plastic, etc. In addition, one skilled in the art will appreciate that
rollers may be
employed that are situated a predetermined distance from the floor to perform
the same
function.
Referring now to Figs. 1-20, a manner of making the present invention is shown
and
described herein. As has been explained, the present invention is generally
similar to the
floor treatment devices used in the art. However, unlike many prior art
devices, the present
invention provides a location for which the operator can stand or sit, thus
enabling him or her
to more efficiently perform their tasks. In addition, instead of using brute
strength to perform
the task of steering the cleaning device, a steering mechanism and associated
hardware are
provided to aid in the smooth transition from one direction to another. Also,
the present
invention device has a compact profile and mechanism which allows for 360
cleaning of
tight spaces. Further, to construct the remote control version of the system,
software that is
known in the art maybe installed in the chassis 8 to allow for the system to
be either remotely
controlled or learn the cleaning surface as it operates. In addition, a series
of cameras may
be interconnected to the chassis 8 to provide remote viewing to an operator
offsite.
While various embodiment of the present invention have been described in
detail, it
is apparent that modifications and alterations of those embodiments will occur
to those
skilled in the art. However, it is to be expressly understood that such
modifications and
alterations are within the scope and spirit of the present invention, as set
forth in the
following claims.
