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Sommaire du brevet 2512619 

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  • lorsque le brevet est émis (délivrance).
(12) Brevet: (11) CA 2512619
Statut: Réputé périmé
Données bibliographiques

Abrégé français

Une bâche de protection articulée pour véhicule remorqué comprenant deux éléments qui sont autorisés à se chevaucher lorsque le véhicule remorqué effectue un virage, un élément étant connecté au véhicule remorqué tandis que l'autre élément est connecté au véhicule remorqué.

Abrégé anglais

An articulated protective tarpaulin for towed vehicle comprises two elements which are allowed to overlap when the towing vehicle is making a tum, one element being connected to the towing vehicle while the other element being connected to the towed vehicle.


Note : Les revendications sont présentées dans la langue officielle dans laquelle elles ont été soumises.


1. An articulated protective tarpaulin for protecting a towed vehicle
a first element connected to a towing vehicle;

a second element connected to a towed vehicle;

means for connecting the first element to the scond element;

said first element consisting of a pair of attachment frames attached to a

a first tarp (11) extending from an attachment frame toward the towed vehicle
terminating at a rear frame;

said second element consisting of a towed vehicle attachment frames attached
said towed vehicle;

a second tarp (17) extending from said towed vehicle attachment frame toward
towing vehicle and terminating in a second element frame;

said means for connecting said first element and said second element
permitting the
elements to pivot relative to each other and consisting of a tensioning cable
at one end to a portion of said second element frame, passing through a first
connection at one of said attachment frames, passing through a second pulley
connection at said other attachment frame and secured at the other and to said

second element frame;

a string retainer secured at one end to one of said attachment frames, secured
at the
approximate mid-point to the mid-point of said second element frame and
secured at
the other end to the other of said attachment frames;


a secondary string retainer secured at one end to the rear frame, passing
through a
pulley connection at the mid-point of the towed vehicle attachment frame and
at the other end to the rear frame.
2. An articulated protective tarpaulin for protecting a towed vehicle as in
claim 1

said first element has, at its lateral extremities, downward depending,
extensions to reduce the effect of wind fluctuations on said articulated
tarpaulin, said
sides being formed by said first tarp and by said attachment frames being L

shaped wherein one leg of each L extends downwards

3. An articulated protective tarpaulin for protecting a towed vehicle as in
claim 1
wherein said attachment means comprising:

a ring attached to a short strap which is itself mechanically fastened to a
solid part,
such as a frame of said vehicles;

said attachment frames or said towed vehicle attachment frame passing through


Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.

CA 02512619 2006-11-29
Field of the invention
The invention relates generally to protective covers and tarpaulins but more
particularly to a protective cover for a towed vehicle.
Background of tike invention
Motorized camping is a popular activity and presents certain drawbacks
upon the type of camper one uses. In the case of a fi'l'th wheel type trailer,
a user can
separate the pickup truck from the trailer and use a much lighter and less
cumbersome vehicle to run errands while the trailer itself is left at the
However, when one uses a tnotorhome, one has the choice to constantly travel
around with the full motorhome even to rvn errands or else, tow a second
which can be a motorbike or a car, or such vehicle. Of course, when towing a
over Tong distances, the towed vehicle can be subjected to damage which would
readily be noticed by the motorhome occupants. Indeed, due to certain
characteristics of motohomes in general, there is a large amount of dirt and
which can be projected fmm underneath the motorhome onto the towed vehicle. In
order to avoid that, the prior art teaG7es the arse of protective shields. The

CA 02512619 2006-11-29
of such shields has to do with size, weight, lade of flexibility, and
complexity in the
dismantlement of such shields which can be necessary when one wants to untow
towed vehicle.
There are some instances where flexible tarplike shields have been descxibecf
in the
prior art, for example, US patent 5,181,734 describes a shield device for
the front lower portion of a boat or automobile which is towed behind a towing
by way of a tongue frame member constructed of an elongated rigid bar whose
extremities pendantly hold paired resilient shield members. Elastic tethers
from each extremity of the bar to the corresponding extremity of the rear
bumper of
the towing vehicle. By virtue of such construction, the shield members stay
behind the near wheels of the towing vehicle, even on curved roads_
US patent 6,022,038 describes a protector for positioning in a space between
vehiGes, one positioned behind the other. The protector inducting a protective
member configured to ~t into and substantially fill the space between the two
and movement apparatus connected to the protective member for accommodating
relative movement between the twa vehides. In one aspect the protector is
fom~ed of
flexible materfal such as screening, mesh, metal fail, cloth, canvas, fencing,
fiberglass, nylon and plastic. In another aspect the protector has a sub-
formed of or secured to the protective member and positioned to protect the
protective member from effects of a vehicle exhaust adjacent the protective
when the protector is emplaced between two vehicles.

CA 02512619 2006-11-29
US patent 6,196,587 describes a tow shield and underskirt device comprising a
~exible deflecting member that is adapted to be attached to the towing vehicle
and the
vehicle in tow to protect bath vehicles and the tow bar from road debris that
is thrown
by moving vehicles during travel. Tensioned elastic members an the forward and
rearward edges of the deflecting member hold the respective edges adjacent to
rear of the towing vehicle and adjacent to the front of the towed vehicle. The
longitudinal sides of the defecting member are supported by additional elastic
members which lengthen and shorten as the vehicles maneuver around comers.
The major drawback in the prior art appears when the tracing vehicle makes a
In such a situation, which can occur quite frequently to varying degrees, as
trading vehicle makes its turn, the towed vehicle has a delay before it starts
its tum,
this changes the configuration of the tarp_ One side of the tarp is stretched
perhaps only the underlying string structure, which presents stretchable
characteristics, being pulled out. This leaves an opened space between the
tarp and
the rear of the trading vehicle ,while the other side becomes loose and may
start fo
In view of the foregoing disadvantages inherent in the !mown devices nvw
present in
the prior art, there is a need for an improved protective tarp for towed
Although the prior art appears to provide solutions to complex installation

CA 02512619 2006-11-29
deinstallation, weight issues, storage issues, there is still the issue of
changes in
direction which is not addressed properly. The present invention, which will
described subsequently in greater detail, is to provide objects and advantages
To provide a protective tarpaulin that protects at all times, even during
turns by
eliminating opened gaps early in the tum when the towed vehide can still
To provide a protective tarpaulin that is easily installable and dismountable.
To provide a protective tarpaulin that is foldable for easy storage
To attain these ends, the present invention generally comprises two elements
are allowed to overlap when the towing vehide is making a tum, one element
connected to the towing vehicle while the other element being connected to the
There has thus been outlined, rather broadly, the more important features of
invention in order that the detailed description thereof that follows may be
understood, and in order that the present contribution to the art may be
appreciated. There are additional features of the invention that will be
hereinafter and which will form the sut~ject matter of the claims appended

CA 02512619 2006-11-29
In this respect, before explaining at least one embodimerrt of the invention
in detail, it
is to be understood that the invention is not Ilmited in its applicatian to
the details of
consfiuction and to ~e arrangements of the components set forth in the
description or illustrated in the drawings. The invention is capable of other
embodiments and of being practiced and carried out in various ways. Also, it
is to be
understood that the phraseology and terminofogy employed herein are for the
purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon
which this
disclosure is based, may readily be utilized as a basis for the designing of
structures, methods and systems for carrying out the several purposes of the
invention. It is important, therefore, that the claims be regarc~d as
including such
equivalent constructions insofar as they do not depart from the spirit and
scope of the
present invention.
These together with other objects of the invention, along with the various
features of
novelty which characterize the invention, aria pointed out with particularity
in the
claims annexed to and fiorming a part of this disGosure. For a better
understanding of
the invention, its operating advantages and the specific objects attained by
its uses,
r$ference should be had to the accompanying drawings and descriiOtive matter
which there is illustrated preferred embodiments of the invention.

CA 02512619 2006-11-29
Figs. 1abc top view of the articulated protective tarpaulin, straight, taming
left, and
taming right respectively.
Fig. 2a side view ofi the articulated protective tarpaulin.
Fig. 2b front view ofi an attachment irame_
Figs. 3ab side and front view respectively ofi attachment means to the towed
and the
towing vehicles.
An articulated protective tarpaulin (10) is comprised of two elements : A fret
(12) connected to a towing vehicle (14), and a second element (16) connected
to a
towed vehicle (18). The two elements (12, 16) are essentially separate and
except for a tensioning cable (34) and a string retainer (20} both of which
connect the two elements (12, 16} with the string retainer (20) anchoring at
point (22) while string retainer (34) anchors at anchoring point (22', z2")
which are
also attached to one ofi a pair ofi attachment frames (24) and the third
anchoring point
(22) is siidingly attad~ed to a second element frame (26).
The first element (12) extends its tarp (11) from the pair of attachment
frames (24)
towards the towed vehicle (1$) until it ends at an end frame (30), Each of the
attachment frames (24) is attached to the towing vehicle (14) by attachment
(60) which can be any of a variety of means, by way of example, Figs. dab show

CA 02512619 2006-11-29
ring (52) attached to a short strap (54) which is itself mechanically fastened
to a solid
part, usually on the frame of the vehicles (94, i8). The attachment frames
(24) or a
towed vehicle attachment frame (28) equipped with a standard hook {not shown}
hook into the ring (52). Any variations on suds a means is acceptable since
there is
no specfic way of attaching the attachment frames (2a) and towed vehicle
frame (28) because of variations in structures on both vehicles (14, 18).
The second element frame {26) can be made of either two rod like parts or a
bent rod like part. The second element (16) extends its tarp (17) from the
element frame {26) towards the towed vehicle (18) where it terminates on the
vehicle attachment frame (28). The towed vehicle attachment frame (28) is
to the towed vehicle (18) by the means described hereinabove. A secondary
tensioner (32) retains the end frame (30) to the towed vehicle attachment
frame (28).
As can be seen on digs, lbc, when the towing vehicle (14) executes a tum, the
elements (12, 16), being separate, are allowed to pivot relative to one
another around
anchoring point (22). A tensioning cable (34) pulls on one side of the second
frame (26) while giving slack to the other side of the second element frame
(26). The
tensioning cable (34) passes through a set of pulleys (36) (in fact the
anchoring points
22' end 22"} and starts and ends at tie downs (38)_ Beyond a cerkain point in
the tum,
as Shown, there is a gap (15) between the two elements (12, 16) but at this
point, the
towed vehicle (18) is out of harm's way so any rocks or debris being projected
by the
towing vehicle (14} would not hit the towed vehiGe (18).

CA 02512619 2006-11-29
During operation, when the towing vehicle is travelling at a sufficient
velocity, the
tarps (11, 17} are subjected to fluctuating wind loads and may as a result
flap or the
frames may twist out of plane. 1t has been found that these detrimental
effects can be
reduced by corrfiguring the ~trst element to have downwardly depending
extensions (40} at its lateral extremities (12) as shown in Figure 2a_ Such
(40) are created by 'L' shaped attachment frames (24) in which one leg of the
extends downwards at each of the lateral extremity. The tarp (11) at it's
fiarward most
edge then follows the attachment frames (24) while at the rear mast edge, the
(11 ) follows frame (30). A standard tow bar (42) passes over both the first
and second
elements (12, 16). Any one of a variety of means known in the art can be used
connecting the towed vehicle attachment frame (28) to the towed vehicle (18).
such means involves at least one hook (SO) which serves to attach the tow bar
(42) to
the towed vehicle (18).
As to a further discussion of the manner of usage and operation of the present
invention, the same should be apparent frbrn the above description.
Accordingly, no
further discussion relating to the manner of usage and operation will be
With respect to the above description then, it is to be realized that the
dimensional relationships fvr the parts of the invention, to Include
vz~riations in size,
materials, shape, form, function and manner of operation, assembly and use,
deemed readily apparent and obvious to one skilled in the art, and all
relationships to those illustrated in the dranroings and described in the
specification are

CA 02512619 2006-11-29
intended to be encompassed by the present invention.
There#ore, the foregoing is considered as illustrative only of the principles
of the
invention. Further, since numer4us modfications and charges will readily occur
those skilled in the art, it is not desired to limit the invention to the
exact construction
and operation shown and described, and accordingly, all suitable modifrcations
equivalents may be resorted to, #alling within the scope of the invention.

Dessin représentatif
Une figure unique qui représente un dessin illustrant l'invention.
États administratifs

Pour une meilleure compréhension de l'état de la demande ou brevet qui figure sur cette page, la rubrique Mise en garde , et les descriptions de Brevet , États administratifs , Taxes périodiques et Historique des paiements devraient être consultées.

États administratifs

Titre Date
Date de délivrance prévu 2007-11-27
(22) Dépôt 2005-07-20
Requête d'examen 2005-07-20
(41) Mise à la disponibilité du public 2007-01-20
(45) Délivré 2007-11-27
Périmé 2015-07-20

Historique d'abandonnement

Il n'y a pas d'historique d'abandonnement

Historique des paiements

Type de taxes Anniversaire Échéance Montant payé Date payée
Requête d'examen 400,00 $ 2005-07-20
Le dépôt d'une demande de brevet 200,00 $ 2005-07-20
Taxe de maintien en état - Demande - nouvelle loi 2 2007-07-20 50,00 $ 2007-06-08
Taxe finale 150,00 $ 2007-07-20
Taxe de maintien en état - brevet - nouvelle loi 3 2008-07-21 50,00 $ 2008-06-18
Taxe de maintien en état - brevet - nouvelle loi 4 2009-07-20 50,00 $ 2009-06-04
Taxe de maintien en état - brevet - nouvelle loi 5 2010-07-20 100,00 $ 2010-06-21
Taxe de maintien en état - brevet - nouvelle loi 6 2011-07-20 100,00 $ 2011-06-14
Taxe de maintien en état - brevet - nouvelle loi 7 2012-07-20 100,00 $ 2012-06-21
Taxe de maintien en état - brevet - nouvelle loi 8 2013-07-22 100,00 $ 2013-07-05
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Description du
Nombre de pages   Taille de l'image (Ko) 
Dessins représentatifs 2007-01-10 1 12
Page couverture 2007-01-10 1 33
Description 2006-04-28 8 289
Revendications 2006-04-28 2 48
Dessins 2006-04-28 2 33
Abrégé 2005-07-20 1 6
Description 2005-07-20 8 230
Revendications 2005-07-20 2 39
Dessins 2005-07-20 2 31
Description 2006-11-29 9 244
Revendications 2006-11-29 2 45
Revendications 2007-03-28 2 48
Page couverture 2007-11-01 1 34
Poursuite-Amendment 2006-04-28 16 458
Poursuite-Amendment 2007-01-22 2 50
Poursuite-Amendment 2006-04-28 16 417
Correspondance 2005-08-30 1 13
Cession 2005-07-20 2 63
Poursuite-Amendment 2005-10-31 2 53
Poursuite-Amendment 2006-06-09 3 134
Poursuite-Amendment 2006-11-29 18 438
Poursuite-Amendment 2007-03-28 5 110
Taxes 2007-06-08 1 22
Correspondance 2007-07-20 1 22
Taxes 2008-06-18 1 24
Correspondance 2010-04-06 1 20
Taxes 2009-06-04 1 26
Correspondance 2010-05-12 1 12
Taxes 2010-06-21 1 24
Taxes 2011-06-14 1 45
Correspondance 2011-06-14 1 19
Taxes 2012-06-21 1 18
Taxes 2013-07-05 1 126