Note: Descriptions are shown in the official language in which they were submitted.
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SEISMIC TOOL ASSEMBLY FOR USE IN ANCHOR INSERTION
The present invention relates to a seismic tool assembly
meant to be used for the later insertion and setting of anchors,
such as drop-in and wedge type anchors into brittle materials
such as concrete, stone, masonry and cementuous materials. More
particularly, the present invention relates to a seismic tool
assembly for effecting a drill hole and enlarging a lowermost end
thereof to have a greater circumference than that of the
remainder of the drill hole whereby an anchor can be set more
securely therein.
BACKGROUND OF THE INVENTION
Anchors are conventionally used in construction to attach
various components of a building construction to an overhead
ceiling or other structure. Such components to be attached can
relate to, for example, services that provide plumbing,
electrical, drainage, sprinkler system piping and drop ceilings.
From these anchors, which are usually of the wedge or drop-in
type variety, all of the above services and ceilings are
suspended or secured.
Conventionally, in setting anchors in concrete to suspend an
awning, for example, a hole is pre-drilled in the surface to
which the anchor is to be applied, and then the anchor is
inserted into the pre-drilled hole. However, when setting such
anchors in concrete it is not uncommon for such anchors to weaken
and loosen over time, particularly in situations where cracking
or chipping of the concrete around the pre-drilled hole has
occurred.
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Furthermore, studies have revealed that cracking can
typically occur in the concrete element, and that such cracks can
significantly impact the performance of anchors. Cracks can
originate on a concrete beam or slab in a variety of ways, such
as creep, temperature settlement of the support or foundation,
thermal expansion and contraction stress overload, or from a
natural disaster such as an earthquake or flood. In such
situations, the situation can arise where, if one such concrete
anchor fails and lets go, the remaining anchors, by virtue of the
weight they additionally assume in light of such failure, can
also similarly collapse and fail.
It has been found that enlarging the lowermost (interior)
portion of a drill hole can allow an anchor to be set more
securely therein. It has further been found that providing a
drill hole with an enlarged lower end having a greater
circumference than that of the remainder of the drill hole can be
advantageously provided by a drill bit having an enlarged cutting
portion adjacent the tip, which is inserted into the drill hole,
whereby the enlargement of the cutting portion is configured so
that it can pass through the shaft of the pre-drilled hole to be
enlarged.
It would therefore be advantageous to have an improved
seismic tool assembly meant to be used for the later insertion
and setting of anchors into brittle materials such as concrete,
stone, masonry and cementuous materials.
It would be further advantageous to have an improved seismic
tool assembly for use in a one step process for both creating a
drill hole and, at the same time, enlarging a lowermost end of a
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drill hole, wherein the lowermost end of the drill hole can be
further drilled and enlarged to have a greater circumference than
that of the remainder of the drill hole, wherein an anchor can
later be positioned and securely retained within the enlarged
area.
It would also be further advantageous to have an improved
seismic tool assembly meant to be used for the later insertion
and setting of anchors which utilizes a stabilizer having an
opening corresponding with the drill hole for receiving an
insertion of the bit body into the drill hole, so as to aid in
accurately inserting the drill bit into the drill hole. It would
also be still further advantageous to have a stabilizer which
possesses a lower end having a larger sized opening greater than
that of the bit body, so as to increase the range of motion of
the drilling bit and permit limited tilting movement of the bit
within the stabilizer during the drilling process so as to
further aid in enlarging a lowermost end of the drill hole to
receive an anchor. To this end, the present invention effectively
addresses this need.
SUMMARY OF THE INVENTION
The present invention provides an improved seismic tool
assembly meant to be used for the later insertion and setting of
anchors for the insertion and setting of anchors into brittle
materials such as concrete, stone, masonry and cementuous
materials.
The present invention also provides an improved seismic tool
assembly meant to be used for the later insertion and setting of
anchors, which can be used in a one step process for both
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creating a drill hole and, at the same time, for enlarging a
lowermost end of a drill hole to have a greater circumference
than that of the remainder of the drill hole, whereby an anchor
can be later set and positioned more securely therein.
The present invention also provides an improved seismic tool
assembly meant to be used for the later insertion and setting of
anchors which utilizes a stabilizer which possesses a lower end
having a larger sized opening greater than that of the bit body,
so as to increase the range of motion of the drilling bit and
permit limited tilting movement of the bit within the stabilizer
during the drilling process so as to further aid in enlarging a
lowermost end of the drill hole to receive an anchor. The present
invention also provides an improved seismic tool assembly wherein
a drill stop member permits a tilted controlled rotation within
the stabilizer.
According to a first broad aspect of an embodiment of the
present invention, there is disclosed a seismic tool assembly for
effecting a drill hole and enlarging a lowermost end thereof for
a later insertion and setting of anchors therein, the assembly
comprising a substantially cylindrical bit body sized to fit into
the drill hole, the bit body having a first end region
constructed and arranged to be operatively connected to a drill
and a second end region disposed generally opposite said first
end region, wherein a cutting portion is positioned to protrude
from at least one side of the second end region, the cutting
portion having an operational cutting radius greater than a
cutting radius of the bit body; a drill stop member having an
opening defined therethrough corresponding with the drill hole
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and for receiving an insertion of the bit body therethrough; a
restrictive disk for substantially covering an upper surface of
the drill stop member and having an opening defined therethrough
corresponding with the drill hole and for receiving an insertion
of the bit body therethrough; a stabilizer for mounting within at
least a portion of the drill hole and having a recessed interior
portion which is constructed and arranged for having the drill
stop member mounted thereon, the stabilizer further comprising:
(a)a flange portion constructed and arranged to extend into the
drill hole and abut an inside portion thereof;(b)a central
opening corresponding with the opening of the drill stop member,
the central opening providing a space between the bit body and
the flange portion to permit limited tilting movement of the bit
body during a drilling process to enlarge the lowermost end of
the drill hole;
(c) a threaded portion on an upper interior surface of the
stabilizer;(d) a securing portion having an opening defined
therethrough for receiving an insertion of the bit body
therethrough, and corresponding with the central opening of the
stabilizer, a lower end of the securing portion being threaded so
as to permit threaded engagement of the securing portion to the
threaded portion of the stabilizer so as to prevent disengagement
of the drill stop member from the stabilizer during the drilling
process.
According to a second broad aspect of an embodiment of the
present invention, there is disclosed a seismic tool assembly for
effecting a drill hole and enlarging a lowermost end thereof for
a later insertion and setting of anchors therein, the assembly
comprising a substantially cylindrical bit body sized to fit into
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the drill hole, the bit body having a first end region
constructed and arranged to be operatively connected to a drill
and a second end region disposed generally opposite said first
end region, wherein a cutting portion is positioned to protrude
from at least one side of the second end region, the cutting
portion having an operational cutting radius greater than a
cutting radius of the bit body; a drill stop member having an
opening defined therethrough corresponding with the drill hole
and for receiving an insertion of the bit body therethrough and
comprising:(a)threads on an uppermost exterior surface
thereof;(b) an upper portion having threads on an interior
surface thereof, which can be matingly engaged with the threads
on the uppermost exterior surface of the drill stop member to
secure the upper portion to the drill stop member, the upper
portion having opening defined therethrough corresponding with
the opening in the drill stop member for receiving an insertion
of the bit body therethrough; a restrictive disk for
substantially covering an upper surface of the drill stop member
and having an opening defined therethrough corresponding with the
drill hole and for receiving an insertion of the bit body
therethrough, the opening of the restrictive disk having a shape
which corresponds substantially to a shape of the cutting portion
and the bit body; a stabilizer for mounting within at least a
portion of the drill hole and having a recessed interior portion
which is constructed and arranged for having the drill stop
member mounted thereon, the stabilizer further comprising:
(a) a flange portion constructed and arranged to extend into the
drill hole and abut an inside portion thereof;
(b) a central opening corresponding with the opening of the
drill stop member, the central opening providing a space between
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the bit body and the flange portion to permit limited tilting
movement of the bit body during a drilling process to enlarge the
lowermost end of the drill hole;
(c) a threaded portion on an upper interior surface of the
stabilizer; (d)a securing portion having an opening defined
therethrough for receiving an insertion of the bit body
therethrough, and corresponding with the central opening of the
stabilizer, a lower end of the securing portion being threaded so
as to permit threaded engagement of the securing portion to the
threaded portion of the stabilizer so as to prevent disengagement
of the drill stop member from the stabilizer during the drilling
process; and
a cap portion having threads on an interior surface thereof,
wherein the threads of the cap portion can be matingly engaged
with the threaded portion of the upper portion of the drill stop
member, the cap portion having an opening corresponding with the
opening in the drill stop member for receiving an insertion of
the bit body therethrough.
An important advantage of the present invention is that it
provides an improved seismic tool assembly having a drill bit
which can be connected to a conventional drill, for effecting a
drill hole and enlarging a lowermost end thereof wherein an
anchor can later be positioned and securely retained within the
enlarged area. Further, the present invention provides a
stabilizer for mounting within at least a portion of the drill
hole, having an opening corresponding with the drill hole, for
receiving an insertion of the drill bit into the drill hole, so
as to aid in accurately inserting and positioning the drill bit
into the drill hole.
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Another important advantage of the present invention is that
it provides an improved seismic tool assembly which utilizes a
stabilizer having a threaded portion on an upper interior surface
of the stabilizer and a securing portion threaded on a lower end
thereof to permit threaded engagement of the securing portion to
the threaded portion of the stabilizer so as to prevent
disengagement of the drill stop member from the stabilizer during
the drilling process.
BRIEF DESCRIPTION OF THE DRAWINGS
The embodiments of the present invention will now be
described by reference to the following figures, in which
identical reference numerals in different figures indicate
identical elements and in which:
Figure 1 is a side view illustrating a still further embodiment
of a fully connected seismic tool assembly;
Figure 2 is an expanded view of the embodiment of the fully
connected seismic tool assembly shown in Figure 1;
Figure 3 is an expanded view of the embodiment of the fully
connected seismic tool assembly shown in Figure 1;
Figure 4 is an expanded view of the embodiment of the drill stop
member and securing portion of the seismic tool assembly shown in
Figure 1;
Figure 5 is an expanded view of the embodiment of the drill stop
member, securing portion and the lower portion of the seismic
tool assembly shown in Figure 1;
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Figure 6 is an exploded view of the embodiment shown in Figure 1,
illustrating the upper portion and the cap portion of the seismic
tool assembly;
Figure 7 is a further exploded view of the embodiment shown in
Figure 6, illustrating the upper portion and the cap portion;
Figure 8 is a side view illustrating a still further embodiment
of the seismic tool assembly;
Figure 9 is an expanded view of the embodiment of the drill
seismic drilling bit and cap portion of the seismic tool assembly
shown in Figure 8;
Figure 10 is an expanded view of the embodiment of the drill stop
member, securing portion and the lower portion of the seismic
tool assembly shown in Figure 8;
Figure 11 is a perspective view of the embodiment of the drill
stop member, securing portion and the lower portion shown in
Figure 10, in a fully connected state;
Figure 12 is a perspective view of the embodiment of the drill
stop member, securing portion and the lower portion shown in
Figure 11, in a fully connected state, and with the seismic
drilling bit inserted therethrough; and
Figure 13 is a perspective view of the connected seismic tool
assembly shown in Figure 8, shown in a fully connected state.
DETAILED DESCRIPTION OF THE INVENTION
The invention will be described for the purposes of
illustration only in connection with certain embodiments;
however, it is to be understood that other objects and advantages
of the present invention will be made apparent by the following
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description of the drawings according to the present invention.
While a preferred embodiment is disclosed, this is not intended
to be limiting. Rather, the general principles set forth herein
are considered to be merely illustrative of the scope of the
present invention and it is to be further understood that
numerous changes may be made without straying from the scope of
the present invention.
The present invention consists of an improved seismic tool
assembly designed for effecting a drill hole and enlarging a
lowermost end thereof to have a greater circumference than that
of the remainder of the drill hole whereby an anchor can be set
more securely therein.
Referring to Figure 1, there is shown a seismic tool
assembly for use in the later insertion and setting of anchors
shown generally at 1 in accordance with a first exemplary
embodiment of the present invention. In a preferred embodiment,
as hereinafter described, the seismic tool assembly 1 is to be
rotatably mounted onto a drill by way of a drill spindle (not
shown). It will be understood that there are numerous variations
as to the types of attachments to a drill or otherwise that the
seismic tool assembly 1 of the present invention could be mounted
thereon, as would be readily apparent to one skilled in the art.
In a preferred embodiment, the seismic tool assembly 1 is
for use in the later insertion and setting of anchors into
concrete, stone, masonry and cementuous materials (though it will
be understood that other variations to this are possible) and
comprises a seismic drilling bit 2, a stabilizer 7, and a drill
stop member 5, as hereinafter described.
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Preferably, the components of the assembly, including the
seismic drilling bit 2, stabilizer 7, and drill stop member 5,
will be made of a durable, machinable metal. The seismic drilling
bit 2 is, preferably, substantially cylindrical in shape and is
of a one-piece construction that comprises an upper end 6 and a
lower end 8 which are integrally connected to one another.
With reference to Figure 1, it can be seen that the bit body
4 of the seismic drilling bit 2 can effect the drilling of a
drill hole, and has a first diameter (and cutting radius) sized
to readily fit into a drill hole (not shown), and possesses, as
most conventional drill bits do, at least one cutting edge and at
least one groove extending in a helical fashion along a length of
the bit body 4 of the seismic drilling bit 2. In a preferred
embodiment, these extend along a substantial length of the bit
body 4, or, alternatively, extend along at least half a length of
the bit body 4. Preferably, the first diameter of the upper end 6
of the bit body 4 is less than or equal to a diameter of the
drill hole into which the seismic drilling bit 2 of the present
invention is to be inserted.
The upper end 6 of the seismic drilling bit 2 is constructed
and arranged to be releasably secured to a drill by way of a
drill spindle (not shown). In an exemplary embodiment, the distal
lower end 8 of the seismic drilling bit 2 has a drill tip 11
extending generally outwardly from the lower end 8.
The lower end 8 of the seismic drilling bit 2 has a cutting
portion 10 positioned on each side of the lower end 8 of the
seismic drilling bit 2, the cutting portions 10 having a greater
outermost width than that of the bit body 4 whereby, when the
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seismic drilling bit 2 is inserted fully into a lowermost end of
the drill hole and rotated, so as to effect a conical shape in
the drill hole, the cutting portions 10 enlarge a circumference
of the drill hole at the lowermost end thereof that is greater
than the circumference of the remainder of the shaft of the drill
hole. Preferably, the cutting portions 10 extend outwardly from
substantially around an entirety of the lower end 8 of the
seismic drilling bit 2, as seen in Figure 1. In an alternative
embodiment (which is not shown), the lower end 8 of the seismic
drilling bit 2 can have a cutting portion positioned on only one
side of the lower end 8 of the seismic drilling bit 2.
In a still further embodiment (not shown), the bit body 4 of
the seismic drilling bit 2 has a diameter (and cutting radius)
that is less than that of the drill hole, with the cutting
portions 10, of course, still having a greater outermost width
(and cutting radius) than that of the bit body 4. In this manner,
with the bit body 4 of the seismic drilling bit 2 having a width
that is less than that of the drill hole, the initial insertion
of the seismic drilling bit 2 into the drill hole is made easier,
whereby the bit does not need to be as readily forcibly inserted.
With reference to Figure 4, the drill stop member 5,
preferably, has an opening 12 defined therethrough, and is used
for receiving an insertion of the seismic drilling bit 2.
Preferably, the opening in the drill stop member 5 is positioned
at a substantially central location of the drill stop member S.
The drill stop member 5 aids in the accurate and gradual
insertion of the seismic drilling bit 2 into the drill hole. The
drill stop member 5 further comprises, with reference to Figures
4 and 5, a dust exit opening 3 defined therein for allowing dust
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to be removed from the assembly during the drilling process, the
dust exit opening 3 being positioned at substantially a middle
portion of the drill stop member 5. It will, of course, also be
understood that the stabilizer 7 could also possess such a dust
exit opening.
The seismic tool assembly 1 further comprises, with
reference to Figure 1, a stabilizer 7 for receiving, and having
mounted thereon, the drill stop member 5. The stabilizer 7
comprises a flange portion 15 constructed and arranged to extend
into the drill hole and abut an inside portion thereof. In an
alternative embodiment (not shown), the flange portion 15 of the
stabilizer 7 could be tapered at a distal end thereof so as to
further aid in the accurate and gradual insertion of the seismic
drilling bit 2 into the drill hole. It will of course be
understood that the dimensions of the stabilizer 7, or indeed of
any of the components of the assembly 1 could be varied,
depending upon the size of the drill bit to be used. In an
exemplary embodiment, the stabilizer 7, with reference to Figure
2, has a central opening 9 which corresponds with each of the
openings of the drill stop member 5 and the drill hole. The
flange portion 15 when drilling acts also to stabilize the drill
hole, as the flange portion 15 is bigger that the borehole, and,
when forced inside when drilling, it becomes a controlled and
secure tilted rotation as it jams up the borehole.
The opening 9 on the stabilizer 7 has a diameter larger than
the cutting portions 10 of the bit body 4. By virtue of the
opening 9 being greater than the cutting portions 10 of the bit
body 4 to accommodates passage therethrough, this allows the
insertion of the seismic drilling bit 2 into the drill hole (not
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shown), and permits a controlled limited tilting movement of the
bit body 4 from its vertical axis within the opening 9 (and
allows for less physical contact with, particularly, the flange
portion 15) on the stabilizer 7 during the drilling process to
further enlarge a lowermost end of the drill hole, it being
understood that this controlled tilting rotational drilling of
the lower end of the drill hole by the drill bit 2 within the
opening 9 can be done through 360 degrees, whereby the lower end
of the drill hole can be made to be conical and funnel-shaped,
for receiving anchors therein. It will also be understood that to
reduce or increase the conical effect of the bore hole the drill
stop member 5 can be machined to be smaller or bigger, as
required. Further, the drill stop member 5 can be interchanged to
accommodate different drilling depths and sizes of drill bits.
The stabilizer 7 further comprises, as shown in Figures 2
and 3, the stabilizer 7 is comprised of a lower portion 95 and a
securing portion 96, which possesses threads 97 towards a
lowermost end thereof. In an exemplary embodiment, each of the
lower portion 95 and a securing portion 96 comprise openings
therethrough which corresponds with each of the openings of the
drill stop member 5 and the drill hole. In positioning the drill
stop member 5 within the assembly, an upper end 99 of the drill
stop member 5 is passed through an opening in the securing
portion 96, and a lower end 100 is then positioned within the
lower portion 95, the lower end 100 resting on abutment region
101. The lower end 100 of drill stop member 5, possesses a
greater width than a remainder of the drill stop member 5 and,
when in place, abuts abutment region 101 so as to inhibit the
downward movement of drill stop member 5 within the lower portion
95. To secure the drill stop member 5 in place, the lower portion
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95 possesses threads on an interior surface thereof 98 which can
be matingly engaged with the threads 97 of securing portion 96 so
as to secure the lower portion 95 to the securing portion 96, and
each of the lower portion 95 and securing portion 96 have an
outermost width that is greater than that of the drill stop
member 5. In this manner, once the lower portion 95 and securing
portion 96 are secured together, the lower portion 95 and
securing portion 96 hold the lower end 100 of the drill stop
member 5 firmly in place within the assembly.
To secure the upper end of the assembly 1 in place, as shown
in Figures 1, 2, 3 and 4, the drill stop member 5 itself
possesses threads 90 towards an uppermost end 99 thereof. The
drill stop member 5 further comprises an upper portion 91. This
upper portion 91, also possesses threads 103 on an interior
surface thereof (shown in Figure 7) which can be matingly engaged
with the threads 90 on uppermost end 99 of the drill stop member
so as to secure the upper portion 91 to the drill stop member
5, though of course variations to this are possible.
In turn, as shown in Figures 6 and 7, the upper portion 91
also possesses threads 92 towards an uppermost end thereof, which
can be matingly engaged with cap portion 93, which also possesses
threads 105 on an interior surface thereof. The cap portion 93
and upper portion 91 will, in an exemplary embodiment, each have
an opening defined therethrough (not shown) for receiving an
insertion of the bit body 4 therethrough, which corresponds with
the central openings of the stabilizer 7 and the drill stop
member 5. In this manner, once upper portion 91 is connected to
the drill stop member 5, and the cap portion 93 is also secured
to the opposite end of upper portion 91, these hold the upper end
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of the drill stop member 5 firmly in place within the assembly.
When disengagement of the upper portion 91 and cap portion 93 is
desired, the threaded portions of each can be untightened so as
to permit the disengagement of components from the drill stop
member 5.
Figures 6 and 7 illustrate the seismic drill bit 2 having
abutment member 109 thereon, and the assembly further comprising
restrictive disk 107, the restrictive disk 107 being operably
able to be positioned within an upper end of the upper portion
91, and to cover substantially the upper end of the upper portion
91. In an exemplary embodiment, the restrictive disk 107 has a
shape which corresponds substantially to a shape of the cutting
portions 10 of the seismic drill bit 2 for receiving the
insertion of the seismic drill bit 2 therethrough.
When the seismic drill bit 2 is inserted through the upper
end of the upper portion 91, the restrictive disk 107 restricts
downward movement of the seismic drilling bit 2 to a pre-set
depth, through virtue of the seismic drilling bit 2 only being
able to be pushed downwardly within the upper portion 91 to a
certain point, at which abutment member 109 it comes into contact
with the restrictive disk 107, thus restricting downward movement
of the seismic drilling bit 2.
In operation, the seismic drill bit 2 is inserted through
the upper end of the upper portion 91, whereby the restrictive
disk 107 restricts downward movement of the seismic drilling bit
2 to a pre-set depth, through virtue of the seismic drilling bit
2 only being able to be pushed downwardly within the upper
portion 91 to a certain point, at which abutment member 109 comes
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into contact with the restrictive disk 107 within an upper end of
the upper portion 91, thus restricting downward movement of the
seismic drilling bit 2.
An upper end 99 of the drill stop member 5 is then passed
through an opening in the securing portion 96, and a lower end
100 is then positioned within the lower portion 95, the lower end
100 resting on abutment region 101. The lower end 100 of drill
stop member 5, when in place, abuts abutment region 101 so as to
inhibit the downward movement of drill stop member 5 within the
lower portion 95. Once this is done the seismic drilling bit 2 is
then inserted downwardly through the openings in each of the
securing portion 96, the drill stop member 5 and the lower
portion 95. Of course, the lower end 8 of the seismic drilling
bit 2 emerges through opening 114 in the lower portion 95.
To secure the drill stop member 5 in place, and the lower
end of the assembly 1 in place, the lower portion 95 possesses
threads on an interior surface thereof 98 which can be matingly
engaged with the threads 97 of securing portion 96 so as to
secure the lower portion 95 to the securing portion 96, and each
of the lower portion 95 and securing portion 96 have an outermost
width that is greater than that of the drill stop member 5. In
this manner, once the lower portion 95 and securing portion 96
are secured together, the lower portion 95 and securing portion
96 hold the lower end 100 of the drill stop member 5 firmly in
place within the assembly.
To secure the upper end of the assembly 1 in place the
threads 90 of the drill stop member 5 are matingly engaged with
the threads 103 of the upper portion 91. The upper end 6 of the
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seismic drilling bit 2 is then inserted through the opening in
the cap portion 93, and the cap portion is then moved downwardly,
whereby the threads 92 of the upper portion 91 can be matingly
engaged with the threads 105 on an interior surface of the cap
portion 93 to secure the upper half the assembly. The drilling
process is then begun, in a one-step process, whereby the drill
hole is first created, then, as downward pressure is continued,
the flange portion 15 of the stabilizer 7 is pushed to extend
into the drill hole and abut an inside portion thereof. In this
manner, the flange portion 15 stabilizes the seismic tool
assembly 1 during the drilling process. Once the seismic drilling
bit 2 is sunk to a pre-set depth and rotated, rotational drilling
(and tilted rotational drilling as previously described) by the
seismic drilling bit 2 can then be effected in creating an
enlarged area of the lowermost end of a drill hole.
Of course, by virtue of the cutting portions 10 having an
outermost width (and operational cutting radius) that is slightly
greater than that of the bit body 4, these cutting portions 10,
when the seismic drilling bit 2 is rotated, enlarge a
circumference of the drill hole at the lowermost end (in creating
the enlarged area) that is greater than that of the remainder of
the drill hole. In this manner, once the enlarged area has been
created, and the seismic drilling bit 2 removed from the drill
hole, the anchor (not shown) can be inserted, and, when the
anchors have been flanged outwardly by conventional means within
the drill hole, the flange portions of the anchor can rest within
the enlarged area, thus securely retaining the anchor in place.
In a still further alternative embodiment of the fully
connected seismic tool assembly, shown in Figures 8 to 13, there
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is shown a seismic tool assembly for use in the later insertion
and setting of anchors shown generally at 1 in accordance with a
first exemplary embodiment of the present invention. As
previously described with other embodiments, the seismic tool
assembly 1, as shown in Figure 9, is to be rotatably mounted onto
a drill by way of a drill spindle (not shown).
In a preferred embodiment, this embodiment of the seismic
tool assembly 1 is for use in the later insertion and setting of
anchors into concrete, stone, masonry and cementuous materials
(though it will be understood that other variations to this are
possible) and comprises a seismic drilling bit 2, a stabilizer 7,
a drill stop member 5 and a cap portion 93, as hereinafter
described.
Preferably, the components of the assembly, including the
seismic drilling bit 2 (see Figure 9), stabilizer 7 (see Figure
11), and drill stop member 5 (see Figure 8), will be made of a
durable, machinable metal. The seismic drilling bit 2 is,
preferably, substantially cylindrical in shape and is of a one-
piece construction that comprises an upper end 6 and a lower end
8 which are integrally connected to one another.
With reference to Figure 8, it can be seen that the bit body
4 of the seismic drilling bit 2 can effect the drilling of a
drill hole, and has a first diameter (and cutting radius) sized
to readily fit into a drill hole (not shown), and possesses, as
most conventional drill bits do, at least one cutting edge and at
least one groove extending in a helical fashion along a length of
the bit body 4 of the seismic drilling bit 2. In a preferred
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embodiment, these extend along a substantial length of the bit
body 4, or, alternatively, extend along at least half a length of
the bit body 4. Preferably, the first diameter of the upper end 6
of the bit body 4 is less than or equal to a diameter of the
drill hole into which the seismic drilling bit 2 of the present
invention is to be inserted.
The upper end 6 of the seismic drilling bit 2, with
reference to Figure 9, is constructed and arranged to be
releasably secured to a drill by way of a drill spindle (not
shown). In an exemplary embodiment, the distal lower end 8 of the
seismic drilling bit 2 has a drill tip 11 extending generally
outwardly from the lower end 8.
The lower end 8 of the seismic drilling bit 2 has a cutting
portion 10 positioned on each side of the lower end 8 of the
seismic drilling bit 2, the cutting portions 10 having a greater
outermost width than that of the bit body 4 whereby, when the
seismic drilling bit 2 is inserted fully into a lowermost end of
the drill hole and rotated, the cutting portions 10 enlarge a
circumference of the drill hole at the lowermost end thereof that
is greater than the circumference of the remainder of the shaft
of the drill hole. Preferably, the cutting portions 10 extend
outwardly from substantially around an entirety of the lower end
8 of the seismic drilling bit 2, as seen in Figure 9. In an
alternative embodiment (which is not shown), the lower end 8 of
the seismic drilling bit 2 can have a cutting portion positioned
on only one side of the lower end 8 of the seismic drilling bit
2.
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In a still further embodiment (not shown), the bit body 4 of
the seismic drilling bit 2 has a diameter (and cutting radius)
that is less than that of the drill hole, with the cutting
portions 10, of course, still having a greater outermost width
(and cutting radius) than that of the bit body 4. In this manner,
with the bit body 4 of the seismic drilling bit 2 having a width
that is less than that of the drill hole, the initial insertion
of the seismic drilling bit 2 into the drill hole is made easier,
whereby the bit does not need to be as readily forcibly inserted.
With reference to Figure 10, the drill stop member 5,
preferably, has an opening 112 defined therethrough, and is used
for receiving an insertion of the seismic drilling bit 2.
Preferably, the opening 112 in the drill stop member 5 is
positioned at a substantially central location of the drill stop
member 5. The drill stop member 5 aids in the accurate and
gradual insertion of the seismic drilling bit 2 into the drill
hole. The drill stop member 5 further comprises, with reference
to Figure 11, a dust exit opening 3 defined therein for allowing
dust to be removed from the assembly during the drilling process,
the dust exit opening 3 being positioned at substantially a
middle portion of the drill stop member 5. It will, of course,
also be understood that the stabilizer 7 could also possess such
a dust exit opening.
The seismic tool assembly 1 further comprises, with
reference to Figures 8 to 13, a stabilizer 7 for receiving, and
having mounted thereon, the drill stop member S. The stabilizer 7
comprises a flange portion 15 constructed and arranged to extend
into the drill hole and abut an inside portion thereof. In an
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alternative embodiment (not shown), the flange portion 15 of the
stabilizer 7 could be tapered at a distal end thereof so as to
further aid in the accurate and gradual insertion of the seismic
drilling bit 2 into the drill hole. It will of course be
understood that the dimensions of the stabilizer 7, or indeed of
any of the components of the assembly 1 could be varied,
depending upon the size of the drill bit to be used. In an
exemplary embodiment, the stabilizer 7, with reference to Figure
11, has a central opening 114 which corresponds with each of the
openings of the drill stop member 5 and the drill hole.
With further reference to Figure 11, it can be seen that the
opening 114 on the stabilizer 7 has a diameter larger than the
cutting portions 10 of the bit body 4. By virtue of the opening
114 being greater than the cutting portions 10 of the bit body 4
to accommodates passage therethrough, this allows the insertion
of the seismic drilling bit 2 into the drill hole (not shown),
and permits limited tilting movement of the bit body 4 from its
vertical axis within the opening 114 (and allows for less
physical contact with, particularly, the flange portion 15) on
the stabilizer 7 during the drilling process to further enlarge a
lowermost end of the drill hole, it being understood that this
tilting rotational drilling of the lower end of the drill hole by
the drill bit 2 within the opening 114 can be done through 360
degrees, whereby the lower end of the drill hole can be made to
be conical and funnel-shaped, for receiving anchors therein.
The stabilizer 7 further comprises, as shown in Figure 10
and 11, the stabilizer 7 is comprised of a lower portion 95 and a
securing portion 96, which possesses threads 97 towards a
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lowermost end thereof. In an exemplary embodiment, each of the
lower portion 95 and a securing portion 96 comprise openings
therethrough which corresponds with each of the openings of the
drill stop member 5 and the drill hole. In positioning the drill
stop member 5 within the assembly, an upper end 99 of the drill
stop member 5 is passed through an opening in the securing
portion 96, and a lower end 100 of the drill stop member 5 is
then positioned within the lower portion 95, the lower end 100
resting on abutment region 101. The lower end 100 of drill stop
member 5, when in place, abuts abutment region 101 so as to
inhibit the downward movement of drill stop member 5 within the
lower portion 95. To secure the drill stop member 5 in place, the
lower portion 95 possesses threads on an interior surface thereof
98 which can be matingly engaged with the threads 97 of securing
portion 96 so as to secure the lower portion 95 to the securing
portion 96, and each of the lower portion 95 and securing portion
96 have an outermost width that is greater than that of the drill
stop member S. In this manner, once the lower portion 95 and
securing portion 96 are secured together, the lower portion 95
and securing portion 96 hold the lower end 100 of the drill stop
member 5 firmly in place within the assembly.
Figures 9, 10 and 12 illustrate the seismic drill bit 2
having abutment member 109 thereon, the abutment member 109
having a greater width than a remainder of the seismic drill bit
2. When the seismic drill bit 2 is inserted through the uppermost
end 99 of the drill stop member 5, and as the seismic drill bit 2
continues to be inserted therethrough, abutment member 109 on the
seismic drilling bit 2 eventually comes into contact with the
uppermost end 99 of the drill stop member 5, thus restricting
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downward movement of the seismic drilling bit 2 to a pre-set
depth.
To secure the upper end of the assembly 1 in place, as shown
in Figures 12 and 13, the drill stop member 5 itself possesses
threads 90 towards an uppermost end 99 thereof, which can be
matingly engaged with cap portion 93, which also possesses
threads 105 on an interior surface thereof. The cap portion 93,
as shown in Figure 9, will, in an exemplary embodiment, have an
opening 124 (see Figure 9) defined therethrough for receiving an
insertion of the seismic drill bit 2 therethrough, which
corresponds with the central openings of the stabilizer 7 and the
drill stop member S. The cap portion 93 is positioned over the
distal end 6 of the seismic drilling bit 2, and the cap portion
93 is then moved downwardly to cover and surround a substantial
middle portion of the seismic drilling bit 2, whereby the threads
105 on an interior surface of the cap portion 93 (see Figure 9)
can then be matingly engaged with the threads 90 of the drill
stop member 5 to secure the upper half the assembly. When
disengagement of the drill stop member 5 and cap portion 93 is
desired, the threaded portions of each can be untightened so as
to permit the disengagement of components.
In operation the seismic drill bit 2 is inserted through the
uppermost end 99 of the drill stop member 5, whereby, as seismic
drill bit 2 continues to be inserted therethrough, abutment
member 109 on the seismic drilling bit 2 comes into contact with
the uppermost end 99 of the drill stop member 5, thus restricting
downward movement of the seismic drilling bit 2 to a pre-set
depth, see Figures 10 and 12, which illustrates that the
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uppermost end 99 of the drill stop member 5 and the abutment
member 109 on the seismic drilling bit 2 have a width that is
substantially equal.
A lower end 100 of the drill stop member 5 is then
positioned within the lower portion 95, the lower end 100 resting
on abutment region 101. The lower end 100 of drill stop member 5,
when in place, abuts abutment region 101 so as to inhibit the
downward movement of drill stop member 5 within the lower portion
95. Once this is done the seismic drilling bit 2 is then inserted
downwardly through the openings in each of the securing portion
96, the drill stop member 5 and the lower portion 95. Of course,
the lower end 8 of the seismic drilling bit 2 emerges through
opening 114 in the lower portion 95.
To secure the drill stop member 5 in place, and the lower
end of the assembly 1 in place, the lower portion 95 possesses
threads on an interior surface thereof 98 which can be matingly
engaged with the threads 97 of securing portion 96 so as to
secure the lower portion 95 to the securing portion 96, and each
of the lower portion 95 and securing portion 96 have an outermost
width that is greater than that of the drill stop member 5. In
this manner, once the lower portion 95 and securing portion 96
are secured together, the lower portion 95 and securing portion
96 hold the lower end 100 of the drill stop member 5 firmly in
place within the assembly, as shown in Figure 12.
To secure the upper end of the assembly 1 in place, a cap
portion 93 having an opening defined therethrough is positioned
over the distal end 6 of the seismic drilling bit 2, and the cap
CA 02740088 2011-05-12
portion 93 is then moved downwardly to cover and surround a
substantial middle portion of the seismic drilling bit, whereby
the threads 105 on an interior surface of the cap portion 93 (see
Figure 9) can be matingly engaged with the threads 90 of the
drill stop member 5 to secure the upper half the assembly, as
shown in Figure 12. The drilling process is then begun, in a one-
step process, whereby the drill hole is first created, then, as
downward pressure is continued, the flange portion 15 of the
stabilizer 7 is pushed to extend into the drill hole and abut an
inside portion thereof. In this manner, the flange portion 15
stabilizes the seismic tool assembly 1 during the drilling
process. Once the seismic drilling bit 2 is sunk to a pre-set
depth and rotated, rotational drilling (and tilted rotational
drilling as previously described) by the seismic drilling bit 2
can then be effected in creating an enlarged area of the
lowermost end of a drill hole.
Of course, by virtue of the cutting portions 10 having an
outermost width (and operational cutting radius) that is slightly
greater than that of the bit body 4, these cutting portions 10,
when the seismic drilling bit 2 is rotated, enlarge a
circumference of the drill hole at the lowermost end (in creating
the enlarged area) that is greater than that of the remainder of
the drill hole. In this manner, once the enlarged area has been
created, and the seismic drilling bit 2 removed from the drill
hole, the anchor (not shown) can be inserted, and, when the
anchors have been flanged outwardly by conventional means within
the drill hole, the flange portions of the anchor can rest within
the enlarged area, thus securely retaining the anchor in place.
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It will be apparent to those skilled in this art that
various modifications and variations may be made to the
embodiments disclosed herein, consistent with the present
invention, without departing from the spirit and scope of the
present invention.
Other embodiments consistent with the present invention will
become apparent from consideration of the specification and the
practice of the invention disclosed therein.
Accordingly, the specification and the embodiments are to be
considered exemplary only, with a true scope and spirit of the
invention being disclosed by the following claims.
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