Note: Descriptions are shown in the official language in which they were submitted.
WO 2021/019500
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Advanced Holding Apparatus
FIELD OF THE INVENTION
The present invention generally relates to various tools designed for
tightening or
loosening fasteners, in particular bolts and nuts. More specifically, the
present invention
is an anti-slip multidirectional driver bit, designed to prevent damaging or
stripping
fasteners during the extraction or tightening process.
BACKGROUND OF THE INVENTION
Hex bolts, nuts, screws, and other similar threaded devices are used to SCCUre
and
hold multiple components together by being engaged to a complimentary thread,
known
as a female thread. The general structure of these types of fasteners is a
cylindrical shaft
with an external thread and a head at one end of the shaft. The external
thread engages a
complimentary female thread tapped into a hole or a nut and secures the
fastener in place,
fastening the associated components together. The head receives an external
torque force
and is the means by which the fastener is turned, or driven, into the female
threading. The
head is shaped specifically to allow an external tool like a wrench to apply a
torque to the
fastener in order to rotate the fastener and engage the complimentary female
threading to
a certain degree. This type of fastener is simple, extremely effective, cheap,
and highly
popular in modern construction.
One of the most common problems in using these types of fasteners, whether
male or female, is the tool slipping in the head portion, or slipping on the
head portion.
This is generally caused by either a worn fastener or tool, corrosion,
overtightening, or
damage to the head portion of the fastener. The present invention is a driving
bit design
that virtually eliminates slippage. The design uses a series of segmented
portions that bite
into the head of the fastener and allow for efficient torque transfer between
the driving bit
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and the head portion of the fastener. The present invention eliminates the
need for the
common bolt extractors as they require unnecessary drilling and tools. With
the
development of electric screwdrivers, and drills, people have been using,
power tools to
apply the required torsional forces and remove various fasteners. The present
invention
provides a double-sided driver end bit, thus allowing for torque to applied to
the fastener
in both clockwise and counterclockwise directions, thus tightening or
loosening the
fastener_ Most driver end bits have a standardized one fourth inch hex holder
and come in
various configurations including but not limited to, square end, hex end, or
star end.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the present invention_
FIG. 2 is a perspective view of an alternative embodiment of the present
invention.
FIG. 3 is a front view of the alternative embodiment of the present invention
in FIG. 2.
FIG. 4 is a rear view of the alternative embodiment of the present invention
in FIG. 2.
FIG. 5 is a perspective view of an alternative embodiment of the present
invention.
FIG. 6 is a bottom perspective of the present invention.
FIG. 7 is a perspective view of an alternative embodiment of the present
invention_
FIG. 8 is a perspective view of an alternative embodiment of the present
invention.
FIG. 9 is a front view of the alternative embodiment of the present invention
in FIG. S.
FIG. 10 is a perspective view of an alternative embodiment of the present
invention.
FIG. 11 is a perspective view of an alternative embodiment of the present
invention_
FIG. 12 is a perspective view of an alternative embodiment of the present
invention.
FIG. 13 is a front view of a separate alternative embodiment of the present
invention in
relation to FIG_ 2, wherein an entire cross-section of the engagement cavity
as a
triangular profile.
FIG. 14 is a rear view of the separate alternative embodiment of the present
invention in
relation to FIG. 2, wherein an entire cross-section of the engagement cavity
as a
triangular profile.
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FIG. 15 is a front view of another separate alternative embodiment of the
present
invention in relation to FIG. 2, wherein an entire cross-section of the
engagement cavity
as a triangular profile.
FIG. 16 is a front view of another separate alternative embodiment of the
present
invention in relation to FIG. 15, wherein different portions of a laterally-
bracing sidewall
are either concave or convex.
Ha 17 is a front view of another separate alternative embodiment of the
present
invention in relation to FIG. 15, wherein different portions of a laterally-
bracing sidewall
are either convex or concave.
DETAIL DESCRIPTIONS OF THE INVENTION
All illustrations of the drawings are for the purpose of describing selected
versions of the present invention and are not intended to limit the scope of
the present
invention.
The present invention generally related to torque tool accessories. More
specifically, the present invention is a multi-grip screw bit, also known as a
screw bit or
driver. The present invention allows for a higher torque to be applied to a
fastener than a
similarly sized conventional driver bit without damaging the head of the
fastener or the
bit tool. This is achieved through the use of a multitude of engagement
features which
effectively grip the head of the fastener. The present invention is a screw
bit that is
compatible with a variety of torque tools including, but not limited to,
traditional drills,
bit-receiving screwdrivers, socket wrenches, and socket drivers.
In its simplest embodiment, referring to FIG. 1, the present invention
comprises
an at least one screw bit body 1 and an attachment body 19. The screw bit body
1 is a
shank which engages the socket fastener, such as a socket screw or a socket
bolt, in order
to apply a torque force onto the socket faster. The screw bit body 1 comprises
a plurality
of laterally-bracing sidewalls 2, a first base 14, and a second base 15. In
general, the
screw bit body 1 is a prism composed of a strong metal. Each of the plurality
of laterally-
bracing sidewalls 2 engage within and grip the socket fastener in order to
efficiently
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transfer torque from a torque tool to the socket fastener. The first base 14
and the second
base 15 are positioned opposite to each other along the plurality of laterally-
bracing
sidewalls 2. Additionally, the first base 14, and thus second base 15, is
preferably
oriented perpendicular to each of the plurality of laterally-bracing sidewalls
and thus
enclose/complete the prism shape of the screw bit body 1. More specifically,
it is
preferred that the first base 14 comprises a first base surface 26, wherein
the first base
surface 26 is flat and is oriented perpendicular to the bracing surface 5 of
each of the
plurality of laterally-bracing sidewalls 2.
The attachment body 19 allows the present invention to be attached to an
external
torque tool and, thus, allow torque force to be applied to the socket fastener
through the
screw bit body 1. The attachment body 19 is centrally positioned around and
along a
rotation axis 16 of the screw bit body 1 such that the rotation axis of the
attachment body
19 and the rotation axis 16 of the screw bit body 1 are coincidentally
aligned.
Additionally, the attachment body 19 is connected adjacent to the second base
15. The
attachment body 19 preferably has a hexagonal cross-section in order to fit
within a
female attachment member of the external torque tool. External torque tools
include, but
are not limited to, electric drills, torque wrenches, pneumatic drills, socket
screw drivers,
and other similar torque tools. In an exemplary embodiment, the entire cross-
section 9 of
the at least one engagement cavity 8 is a triangular profile. This arrangement
provides
ample space while applying torque for relief of residual stresses and material
that would
otherwise strain the at least one engagement cavity 8. Furthermore, the
triangular profile
may be concave along a direction from the first lateral edge 3 to the second
lateral edge 4.
In this way, torqueing stresses are captured within the at least one
engagement cavity 8
during the application of torsion.
The triangular profile may further comprise a plurality of vertexes 27, as
represented in FIG. 15. The plurality of vertexes 27 relates to the locus of
points
representing corners of the triangular profile. Each of the plurality of
vertexes 27 may be
a rounded corner. This arrangement prevents point stresses from building at
the plurality
of vertexes 27 without significantly reducing the space required for effective
mitigation
of fatigue effects.
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In many cases, it may be advantageous to allow for slight modifications to a
strictly triangular profile, depending upon the intensity of torqueing
stresses and the
shape of the bolt or fixture. To enhance efficiency in such situations, the
triangular profile
may comprise a plurality of vertexes 31 and a pair of elongated portions 32,
as shown in
HG. 16 and 17. The plurality of vertexes 31 relates to a set of points
representing the
corners of the triangular profile. The plurality of vertexes 31 may be viewed
as two
leading edge elements along the first lateral edge 3 and the second lateral
edge 4 and one
cavity base element. The one cavity base element may also be a straight line
connected
to the pair of elongated portions 32. The pair of elongated portions 32
denotes the edges
which join the plurality of vertexes 31 together. The pair of elongated
portions 32 is
interspersed amongst the plurality of vertexes 31. Thus, the pair of elongated
portions 32
connects each of the plurality of vertexes 31 together. Each of the pair of
elongated
portions 32 is a shape selected from the group consisting of: straight line,
concave, and
convex. The group of shapes that may be selected for the plurality of vertexes
31, the pair
of elongated portions 32, or the one cavity base element may be a radius or
angular
shape. This arrangement enables the pair of elongated portions 32 to better
adapt to
different torqueing stresses, thus preventing detrimental wear upon the used
bit due to
fatigue.
Other uses may call for modifications to the shape of the edges surrounding
the
triangular profile together. To provide for this, a bracing surface 5
comprises a first
portion 33 and a second portion 34, as shown in FIG. 16 and 17. The first
portion 33 and
the second portion 34 relate to the edges surrounding the triangular profile.
The first
portion 33 is positioned along a first distance 21, which arranges the first
portion 33
adjacent to the first lateral edge 3. In addition, the second portion 34 is
positioned along a
second distance 22, which arranges the second portion 34 adjacent to the
second lateral
edge 4. The first portion 33 is a shape selected from the group consisting of:
straight line,
concave, and convex. In this way, the first portion 33 may be adapted to best
address
potential mechanical fatigue to the present invention. Similarly, the second
portion 34 is a
shape selected from the group consisting of: straight line, concave and
convex. In this
way, the second portion 34 may be adapted to best address potential mechanical
fatigue
to the present invention. The group of shapes that may be selected for the
first portion 33
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and a second portion 34, as shown in FIG. 16 and 17, may be a radius or
angular shape.
It is often most advantageous for the first portion 33 and the second portion
34 to display
opposite curvatures, with one being concave and the other being convex, for
optimal
reduction of cyclical stress-based effects on the present invention.
Additional
modifications may be implemented to the first lateral edge 3 and the second
lateral edge 4
to form lateral edges which are angular or radial in shape.
Referring to FIG. 3 and FIG. 4, each of the plurality of laterally-bracing
sidewalls
2 comprises a first lateral edge 3, a second lateral edge 4, a bracing surface
5, and an at
least one engagement cavity 8. The plurality of laterally-bracing sidewalls 2
is radially
positioned about the rotation axis 16 of the screw bit body 1 in order to
yield a geometric
profile complimentary to that of the socket fastener. The number within the
plurality of
laterally-bracing sidewalls 2 is subject to change to compliment the shape and
profile of a
variety of socket fasteners. In one embodiment of the present invention, the
number
within the plurality of laterally-bracing sidewalls 2 is six and the resulting
geometric
profile of the screw bit body 1 is a hexagon. In an alternative embodiment of
the present
invention, the number within the plurality of laterally-bracing sidewalls 2 is
four.
The bracing surface 5 physically presses against the socket fastener,
specifically
against the lateral sidewall of a head portion from the socket fastener. The
first lateral
edge 3 and the second lateral edge 4 are positioned opposite to each other
across the
bracing surface 5. When viewed from either the top perspective or the bottom
perspective, the first lateral edge 3 and the second lateral edge 4 from each
of the
plurality of laterally-bracing sidewalls 2 make up the corners of the screw
bit body 1. The
engagement cavity 8 extends normal and into the bracing surface 5 and creates
an
additional gripping point/tooth on the bracing surface S. Additionally, the
engagement
cavity 8 is positioned offset from the first lateral edge 3 by a first
distance 21.
Resultantly, the gripping point is created by the engagement cavity 8 and the
bracing
surface 5. In another embodiment, the gripping point is created by the
engagement cavity
8 and an adjacent edge, wherein the adjacent edge is either the first lateral
edge 3 or the
second lateral edge 4; in particular, the adjacent edge is the edge closest to
the
engagement cavity 8. Additionally, the engagement cavity 8 extends into the
screw bit
body 1 from the first base 14 towards the second base 15. This ensures that
the additional
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gripping point extends along the length of the screw bit body 1 for maximum
grip
engagement between the screw bit body 1 and the socket fastener. To further
accomplish
this, it is preferred that an entire cross-section 9 of the engagement cavity
8 is parallel to
the first base 14 and the second base 15. In one embodiment of the present
invention, the
engagement cavity 8 also tapers from the first base 14 to the second base 15
as seen in
FIG. 11. As a consequence of this embodiment, the at least one engagement
cavity 8 may
taper from the first base 14 to the second base 15 in such a way that the
triangular profile
adjacent to the first base 14 is larger than the triangular profile adjacent
to the second
base 15. In this way, the at least one engagement cavity 8 may be
appropriately shaped to
meet the needs and requirements of the user. Referring to FIG. 3, in one
embodiment of
the present invention, the entire cross-section 9 of the engagement cavity 8
is a partially-
circular profile. Additionally, the partially-circular profile is concave
along a direction
from the first lateral edge 3 to the second lateral edge 4. The partially-
circular profile
ensures that there are little to no high stress points in the screw bit body
1, thus increasing
the overall longevity of the tool. Referring to FIG. 13 and FIG. 14, in a
separate
embodiment of the present invention, the entire cross-section 9 of the
engagement cavity
8 is a triangular profile. Additionally, the triangular profile is concave
along a direction
from the first lateral edge 3 to the second lateral edge 4. Alternative
profiles may be used
for the engagement cavity 8 including, but not limited to, a semi-square
profile, a semi-
rectangular profile, and a semi-oval profile.
In one embodiment of the present invention, referring to HG. 8 and FIG. 9, the
entire cross-section 9 of the engagement cavity 8 comprises a curved portion
10 and a
straight portion 11. In this embodiment, the present invention is implemented
as an
extraction bit, wherein the present invention is designed to extract damaged
or broken
fasteners, damaged rods, broken studs, and other similar items. The engagement
cavity 8
is uniquely shaped in order to form a sharp engagement tooth that grips in the
corners of
the socket fastener, allowing material from the internal sides of the fastener
socket into
the engagement cavity 8 and thus yielding a superior grip over traditional
tools which are
simply designed to push material away. This is especially true for worn or
damaged
fastener socket. More specifically, the curved portion 10 is a semi-circular
curve that is
positioned adjacent to the first lateral edge 3. The straight portion 11 is
positioned
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adjacent to the curved portion 10, opposite the first lateral edge 3. The
straight portion 11
guides a portion of the socket fastener to press against the engagement tooth.
As such, the
straight portion 11 extends from the curved portion 10 to the second lateral
edge 4.
Specifically, the straight portion 11 starts at the curved portion 10 and ends
at the second
lateral edge 4.
In another embodiment of the present invention, referring to FIG. 11, the
engagement cavity 8 is centrally positioned on the bracing surface 5_ In
particular, the
engagement cavity 8 is positioned offset from the second lateral edge 4 by a
second
distance 22. For central positioning, the first distance 21 is equal to the
second distance
22, which is shown in FIG. 15. This positions the engagement cavity 8 to
engage the
internal lateral sidewall of the socket fastener and moves the torqueing
stresses to or
away from the fastener lateral corners to enhance the gripping function and
prevent
fastener rounding for the most efficient transfer of torque with the least
possibility of
slippage. Additionally, this embodiment may be used to rotate the socket
fastener in
either the clockwise or the counter-clockwise direction.
In another embodiment of the present invention, the proportion between the
first
distance 21, the second distance 22, and the width of the engagement cavity 8
may be
altered in order to achieve a dedicated clockwise or counterclockwise design.
In one
embodiment, the present invention is configured to be a clockwise drive bit.
For this
embodiment, the second distance 22 is greater than the first distance 21. In
particular, the
proportion between the first distance 21, the second distance 22, and the
width of the
engagement cavity 8 is 1:5:4, thus yielding a design of the present invention
which grips
and applies torque to the socket fastener in the clockwise direction. This
design is used to
screw in and secure the socket fastener. In another embodiment, the present
invention is
configured to be a counter-clockwise screw bit. For this embodiment, the first
distance 21
is greater than the second distance 22. In particular, the proportion between
the first
distance 21, the second distance 22, and the width of the engagement cavity 8
is 5:1:4,
thus yielding a design which grips and applies torque to the socket fastener
in the
counter-clockwise direction. This design is used to release and extract the
socket fastener.
Referring to HG. 5 and FIG. 10, the present invention may also be implemented
in a spline/square/other-polygonal bit design. More specifically, if the screw
bit body 1
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was a spline-type bit body, then the spline-type bit body would be able to
transfers torque
to the socket fastener through a multitude of protrusions. Thus, the screw bit
body 1 may
further comprise a plurality of intermittent sidewalls 24. Each of the
plurality of
intermittent sidewalls 24 is a flat surface which engages the socket fastener
like a
traditional screw bit design. The plurality of intermittent sidewalls 24 is
radially
positioned about the rotation axis 16. Additionally, the plurality of
intermittent sidewalls
24 is interspersed amongst the plurality of laterally-bracing sidewalls 2_ The
ratio
between the plurality of laterally-bracing sidewalls 2 and the plurality of
intermittent
sidewalls 24 is subject to change to yield a variety of different screw bit
designs. In one
embodiment, the plurality of intermittent sidewalls 24 and the plurality of
laterally-
bracing sidewalls 2 radially alternate between each other. In another
embodiment, there
are three sidewalls from the plurality of intermittent sidewalls 24 in between
each of the
plurality of laterally-bracing sidewalls 2. Resultantly, this configuration
places an
engagement feature/tooth at every other protrusion of the screw bit body 1.
In an exemplary embodiment, a first intermittent sidewall 28, a second
intermittent sidewall 29, and a third intermittent sidewall 30 among the
plurality of
intermittent sidewalls 24 are interspersed on a corresponding laterally-
bracing sidewall
among the plurality of laterally-bracing sidewalk 2, as represented in FIG.
10. The first
intermittent sidewall 28, second intermittent sidewall 29, and third
intermittent sidewall
30 enable effective connection with a fastener while providing the desired
space that
prevents mechanical wear and fatigue on pans. The first intermittent sidewall
28 and the
second intermittent sidewall 29 are perpendicularly positioned to each other.
This
arrangement results in a 90-degree angle, which may be optimal for certain
applications.
The third intermittent sidewall 30 is located in between the at least one
engagement
cavity 8 of the corresponding laterally-bracing sidewall and the second
intermittent
sidewall 29. Thus, the third intermittent sidewall 30 provides structural
support for the at
least one engagement cavity 8 during preferred usage of the present invention.
In another embodiment, referring to FIG. 6, the present invention further
comprises an engagement bore 20. The engagement bore 20 allows the present
invention
to be attached to a male attachment member of an external torque tool, such as
a socket
wrench or a screw driver. The engagement bore 20 extends into the attachment
body 19
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along the rotation axis, opposite the screw bit body 1. The engagement bore 20
is shaped
to receive a male attachment member of a socket wrench; the preferred shape is
square as
the majority of socket wrenches utilize a square attachment member. In this
embodiment,
the preferred attachment body 19 is cylindrical shaped. In alternative
embodiments, the
shape and design of the engagement bore 20 and the attachment body 19 may vary
to be
adaptable to different torque tool designs and different attachment means.
In one embodiment, referring to FIG. 2, the present invention is implemented
as a
dual sided screw bit, thus providing both a clockwise and a counter-clockwise
configuration simultaneously in a single tool. In this embodiment, the at
least one screw
bit body 1 comprises a first screw bit body 17 and a second screw bit body 18.
The
attachment body 19 preferably has a hexagonal cross-section. The attachment
body 19 is
centrally positioned around and along the rotation axis 16 of the first screw
bit body 17
such that the rotation axis of the attachment body 19 and the rotation axis 16
of the first
screw bit body 17 are coincidentally aligned. Additionally, the attachment
body 19 is
connected adjacent to the second base 15 of the first screw bit body 17. The
second screw
bit body 18 shares the attachment body 19 with the first screw bit body 17.
Thus, the
second screw bit body 18 is concentrically positioned with the first screw bit
body 17.
Additionally, the second screw bit body 18 is positioned adjacent to the
attachment body
19, opposite the first screw bit body 17, similar to traditional double-sided
screw bit
designs. Similar to the first screw bit body 17, the attachment body 19 is
connected to the
second base 15 of the second screw bit body 18. The first screw bit body 17 is
designed
to screw in a socket fastener, the clockwise configuration. For this,
referring to FIG. 3,
the second distance 22 of the first screw bit body 17 is greater than the
first distance 21 of
the first screw bit body 17. This positions the additional gripping point of
the first screw
bit body 17 adjacent to the first lateral edge 3 of the first screw bit body
17. The second
screw bit body 18 is designed to unscrew/extract the socket fastener, i.e. the
counter-
clockwise configuration. Referring to FIG. 4, the first distance 21 of the
second screw bit
body 18 is greater than the second distance 22 of the second screw bit body
18. This
positions the additional gripping point of the second screw bit body 18
adjacent to the
second lateral edge 4 of the second screw bit body 18.
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In another embodiment of the present invention, referring to FIG. 5, the at
least
one engagement cavity 8 comprises a first cavity 12 and a second cavity 13.
This
embodiment is an alternative configuration which yields a clockwise and
counter-
clockwise configuration. In particular, the first cavity 12 and the second
cavity 13 are
oriented parallel and offset to each other. The first cavity 12 is positioned
adjacent and
offset to the first lateral edge 3 and the second cavity 13 is positioned
adjacent and offset
to the second lateral edge 4. This allows the user to rotate the present
invention either in
the clockwise or counter-clockwise rotation without removing the present
invention from
the torque tool while still taking advantage of the additional gripping
point(s). In this
embodiment, it is preferred that the present invention further comprises the
plurality of
intermittent sidewalls 24, wherein the plurality of intermittent sidewalls 24
is interspersed
amongst the plurality of laterally-bracing sidewalls 2. As a consequence of
this
embodiment, the triangular profile may be a plurality of triangular profiles
arranged
along the plurality of laterally-bracing sidewalls 2. Such an embodiment
enables
enhanced adaptation to various high-stress uses of the present invention.
Referring to FIG. 7, in an alternative embodiment, the present invention is
implemented as a ball-end screw bit. In this embodiment, the bracing surface 5
for each
of the plurality of laterally-bracing sidewalls 2 comprises a convex portion 6
and a
concave portion 7. The convex portion 6 and the concave portion 7 delineate a
curved
surface such that, overall, the plurality of laterally-bracing sidewalls 2
forms a ball-like
shape. The convex portion 6 is positioned adjacent to the first base 14 such
that the
convex portion 6 from each of the plurality of laterally-bracing sidewalls 2
forms the
body of the ball-like shape. The concave portion 7 is positioned adjacent to
the convex
portion 6, opposite to the first base 14 such that the concave portion 7 from
each of the
plurality of laterally-bracing sidewalls 2 further forms the ball-like shape
and provides
clearance for when the screw bit body 1 is engaged to the socket fastener at
an angle. The
convex portion 6 and the concave portion 7 are oriented along the rotation
axis 16 of the
screw bit body 1, and thus the length of the screw bit body 1, to position the
ball-like
shaped terminally on the screw bit body 1. It is preferred that the curvature,
length, and
height of the concave portion 7 and the convex portion 6 is identical.
Additionally, it is
preferred that the engagement cavity 8 extends along the whole length of the
convex
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portion 6 and the concave portion 7. Thus, additional gripping is provided
along the
screw bit body 1, regardless of the angle between the socket fastener and the
screw bit
body 1.
Referring to FIG. 10, in one embodiment, the present invention is implemented
as
a tamper-resistant screw bit. In particular, the present invention further
comprises a pin-in
security hole 23 which interlocks with a complimentary post within a unique
socket
fastener_ Thus, a set of unique socket fasteners and a unique-key screw bit
may be sold,
utilized, or manufactured to ensure tamper proof design. This type of
interlocking design
is used for security reasons, preventing unauthorized personnel from accessing
certain
socket fasteners. The pin-in security hole 23 is concentrically positioned
with the rotation
axis 16 of the screw bit body 1. Additionally, the pin-in security hole 23
extends into the
screw bit body 1 from the first base 14. The size, depth, and profile of the
pin-in security
is subject to change to meet the needs and specifications of the user.
In one embodiment, referring to FIG. 11, the present invention includes
additional
features in order to guide the screw bit body 1 into the socket fastener. In
particular, a
lateral edge 25 between the first base 14 and each of the plurality of
laterally-bracing
sidewalls 2 is chamfered which aids the user in interlocking the screw bit
body 1 within
the socket fastener. Referring to FIG. 12, in another embodiment, the present
invention is
implemented in a screwdriver design. In this embodiment, the screw bit body 1
is tapered
from the second base 15 towards the first base 14, similar to traditional
screwdrivers_ The
degree of tapering is subject to change to meet the needs and requirements of
the user.
In other embodiments, the present invention may be implemented in the form of
a
socket for tightening or loosening of bolts and other similar fasteners. For
this, the screw
bit body 1 is implemented as a cavity traversing into a cylinder, similar to
traditional
socket designs.
Although the invention has been explained in relation to its preferred
embodiment, it is to be understood that many other possible modifications and
variations
can be made without departing from the spirit and scope of the invention as
hereinafter
claimed.
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