U.S. patent application number 14/727791 was filed with the patent office on 2015-12-03 for cam extension draw stop.
This patent application is currently assigned to MCP IP, LLC. The applicant listed for this patent is MCP IP, LLC. Invention is credited to Mathew A. McPherson.
Application Number | 20150345890 14/727791 |
Document ID | / |
Family ID | 54701327 |
Filed Date | 2015-12-03 |
United States Patent
Application |
20150345890 |
Kind Code |
A1 |
McPherson; Mathew A. |
December 3, 2015 |
Cam Extension Draw Stop
Abstract
In some embodiments, an archery bow comprises a riser, a first
limb and a second limb. A first rotatable member is supported by
the first limb and a second rotatable member supported by the
second limb. The first rotatable member comprises a cam track and a
draw stop. The draw stop comprises a cavity. A bowstring extends
between the first rotatable member and the second rotatable member.
A power cable is arranged to be taken up by the cam track as the
bow is drawn. The bow comprises a drawn orientation and the draw
stop contacts the power cable in the drawn orientation.
Inventors: |
McPherson; Mathew A.;
(Norwalk, WI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
MCP IP, LLC |
Sparta |
WI |
US |
|
|
Assignee: |
MCP IP, LLC
Sparta
WI
|
Family ID: |
54701327 |
Appl. No.: |
14/727791 |
Filed: |
June 1, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62005913 |
May 30, 2014 |
|
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Current U.S.
Class: |
124/25.6 |
Current CPC
Class: |
F41B 5/10 20130101; F41B
5/1403 20130101; F41B 5/1469 20130101; F41B 5/105 20130101 |
International
Class: |
F41B 5/10 20060101
F41B005/10; F41B 5/14 20060101 F41B005/14 |
Claims
1. An archery bow comprising: a riser; a first limb and a second
limb; a first rotatable member supported by said first limb and a
second rotatable member supported by said second limb, said first
rotatable member comprising a cam track and a draw stop, said draw
stop comprising a cavity; a bowstring extending between said first
rotatable member and said second rotatable member; and a power
cable arranged to be taken up by said cam track as said bow is
drawn; wherein said bow comprises a drawn orientation, said draw
stop contacting said power cable in said drawn orientation.
2. The archery bow of claim 1, wherein said draw stop contacts said
power cable at a location that is spaced apart from said cam
track.
3. The archery bow of claim 1, wherein at least a portion of said
power cable is oriented in said cavity in said drawn
orientation.
4. The archery bow of claim 1, wherein said cavity comprises an
arcuate surface that defines a central longitudinal axis of said
cavity.
5. The archery bow of claim 4, wherein said central longitudinal
axis is collinear with a central axis of a terminal portion of said
cam track.
6. The archery bow of claim 1, wherein said draw stop comprises a
concave surface that defines said cavity, said concave surface
contacting said power cable in said drawn orientation.
7. The archery bow of claim 1, wherein said rotatable member
comprises structure located on a first side of said power cable,
said draw stop comprising a flange located on a second side of said
power cable.
8. The archery bow of claim 7, said flange comprising a fastener
head.
9. The archery bow of claim 1, said draw stop comprising a spacer
and a fastener attaching said spacer to said draw stop.
10. The archery bow of claim 9, wherein said spacer is
frustoconical.
11. The archery bow of claim 9, wherein said spacer surrounds a
stem of said fastener.
12. The archery bow of claim 9, wherein said spacer defines a
recess, a head of said fastener oriented in said recess.
13. The archery bow of claim 1, wherein said draw stop comprises a
cantilever structure.
14. The archery bow of claim 1, said first rotatable member
comprising a module arranged to be detached from said first
rotatable member, said module comprising said draw stop.
15. The archery bow of claim 14, said module further comprising a
portion of said cam track.
16. The archery bow of claim 1, said draw stop comprising a
fastener that does not attach to another portion of said first
rotatable member.
17. An archery bow comprising: a riser; at least one limb supported
by said riser; at least one rotatable member supported by said
limb, said rotatable member comprising a cam portion defining a cam
track, said cam portion comprising a draw stop, said draw stop
defining a cavity; and a power cable arranged to be taken up on
said cam track; wherein said archery bow comprises a drawn
orientation, said draw stop contacting said power cable in said
drawn orientation.
18. The archery bow of claim 17, wherein at least a portion of said
power cable is oriented in said cavity.
19. The archery bow of claim 17, wherein said cam portion comprises
a removable portion, said removable portion comprising said draw
stop.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. application Ser.
No. 62/005,913, filed May 30, 2014, the entire content of which is
hereby incorporated by reference.
BACKGROUND OF THE INVENTION
[0002] This invention relates generally to archery bows and more
specifically to compound archery bows.
[0003] Compound bows are known in the art. A compound bow can be
drawn from a brace condition to a fully drawn condition. Some bows
can be drawn slightly past the full draw orientation, wherein a
draw force curve for the bow will typically exhibit a valley. Some
shooters prefer a bow having a relatively soft stop at full draw;
however, some shooters would prefer a harder draw stop. Some bows
provide an interfering member to limit draw, such as a draw stop
member attached to a rotating member and arranged to contact a limb
at full draw. An interfering member can present a very hard stop at
the end of the draw cycle.
[0004] There remains a need for novel bow designs that provide a
better shooting experience. There remains a need for novel bow
designs that provide a draw stop having a harder feel than bows
that omit a dedicated draw stop, but provide a softer stop than is
typically provided by a draw stop arranged to interfere with
draw.
[0005] All US patents and applications and all other published
documents mentioned anywhere in this application are incorporated
herein by reference in their entirety.
[0006] Without limiting the scope of the invention a brief summary
of some of the claimed embodiments of the invention is set forth
below. Additional details of the summarized embodiments of the
invention and/or additional embodiments of the invention may be
found in the Detailed Description of the Invention below.
[0007] A brief abstract of the technical disclosure in the
specification is provided as well only for the purposes of
complying with 37 C.F.R. 1.72. The abstract is not intended to be
used for interpreting the scope of the claims.
BRIEF SUMMARY OF THE INVENTION
[0008] In some embodiments, an archery bow comprises a riser, a
first limb and a second limb. A first rotatable member is supported
by the first limb and a second rotatable member supported by the
second limb. The first rotatable member comprises a cam track and a
draw stop. The draw stop comprises a cavity. A bowstring extends
between the first rotatable member and the second rotatable member.
A power cable is arranged to be taken up by the cam track as the
bow is drawn. The bow comprises a drawn orientation and the draw
stop contacts the power cable in the drawn orientation.
[0009] In some embodiments, at least a portion of the power cable
is oriented in the cavity in said drawn orientation. In some
embodiments, cavity comprises an arcuate surface.
[0010] In some embodiments, a draw stop comprises an asymmetrical
flange oriented to a side of a power cable.
[0011] In some embodiments, the portion of the draw stop that
contacts the power cable is non-elastomeric.
[0012] In some embodiments, a removable module comprises the draw
stop.
[0013] These and other embodiments which characterize the invention
are pointed out with particularity in the claims annexed hereto and
forming a part hereof. However, for a better understanding of the
invention, its advantages and objectives obtained by its use,
reference can be made to the drawings which form a further part
hereof and the accompanying descriptive matter, in which there are
illustrated and described various embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] A detailed description of the invention is hereafter
described with specific reference being made to the drawings.
[0015] FIG. 1 shows an embodiment of a bow in a brace
orientation.
[0016] FIG. 2 shows an embodiment of a rotatable member.
[0017] FIG. 3 shows the bow of FIG. 1 in a drawn orientation.
[0018] FIG. 4 shows a detail of a rotatable member from FIG. 3.
[0019] FIG. 5 shows another embodiment of a rotatable member having
a draw stop.
[0020] FIG. 6 shows an embodiment end view of an archery bow.
[0021] FIG. 7 shows another embodiment of a rotatable member having
a draw stop.
[0022] FIG. 8 shows the rotatable member of FIG. 7 from another
angle.
[0023] FIG. 9 shows an exploded view of an embodiment of a
rotatable member.
DETAILED DESCRIPTION OF THE INVENTION
[0024] While this invention may be embodied in many different
forms, there are described in detail herein specific embodiments of
the invention. This description is an exemplification of the
principles of the invention and is not intended to limit the
invention to the particular embodiments illustrated.
[0025] For the purposes of this disclosure, like reference numerals
in the figures shall refer to like features unless otherwise
indicated.
[0026] FIG. 1 shows an embodiment of an archery bow 10 in a brace
condition. In some embodiments, a bow 10 comprises a riser 12 and
at least one limb 14 supported by the riser 12. As shown in FIG. 1,
the riser 12 supports a first limb 14 at one end and a second limb
16 at the other end. In some embodiments, a limb cup 17 can be used
to receive a limb 14. In some embodiments, a limb cup 17 comprises
a device as disclosed in U.S. Pat. No. 8,453,635, the entire
disclosure of which is hereby incorporated herein by reference.
[0027] Desirably, a limb 14 supports at least one rotatable member
20. As shown in FIG. 1, the first limb 14 supports a first
rotatable member 20 and the second limb 16 supports a second
rotatable member 22. In some embodiments, the first limb 14
supports a first axle 21, and the first axle 21 supports the first
rotatable member 20. Similarly, the second limb 16 can support a
second axle 23, which in turn supports the second rotatable member
22.
[0028] Desirably, a bowstring 30 extends between the first
rotatable member 20 and the second rotatable member 22. In some
embodiments, a first end 31 of the bowstring 30 is anchored to the
first rotatable member 20 and a second end 32 of the bowstring 30
is anchored to the second rotatable member 22. In some embodiments,
a segment of the bowstring 30 extends about a periphery of a
rotatable member 20 when the bow 10 is in the brace condition.
[0029] In some embodiments, the first rotatable member 20 comprises
a first cam portion 24 defining a first cam track, and the second
rotatable member 22 comprises a second cam portion 26 defining a
second cam track. In some embodiments, a first power cable 40 is
attached to the first rotatable member 20 and arranged to be taken
up by the first cam track when the bow 10 is drawn. In some
embodiments, a second power cable 42 is attached to the second
rotatable member 22 and arranged to be taken up by the second cam
track when the bow 10 is drawn. In some embodiments, the first
power cable 40 is anchored to the second axle 23 and the second
power cable 42 is anchored to the first axle 21 (not shown). As
shown in FIG. 1, the first power cable 40 is anchored to the second
rotatable member 22 and the second power cable 42 is anchored to
the first rotatable member 20.
[0030] In some embodiments, the second rotatable member 22 can
comprise a mirror of the first rotatable member 20, and the second
rotatable member 22 can comprise a bowstring track 50 similar to
the first rotatable member 20.
[0031] In some embodiments, a rotatable member 20 comprises a force
vectoring anchor 68, and a power cable (e.g. second power cable 42)
is anchored to the force vectoring anchor 68. Desirably, a force
vectoring anchor 68 defines an anchor axis that is offset from the
rotatable member axis (e.g. first axis 60). In some embodiments, a
force vectoring anchor 68 comprises an anchor structure as
disclosed in U.S. Pat. No. 7,946,281 or U.S. Pat. No. 8,020,544,
the entire disclosures of which are hereby incorporated herein by
reference.
[0032] In some embodiments, a power cable 40, 42 is anchored to an
anchoring mechanism (not illustrated) that is arranged to feed out
power cable 40, 42 as the bow is drawn, for example as disclosed in
U.S. Pat. No. 6,990,970, the entire disclosure of which is hereby
incorporated herein by reference.
[0033] FIG. 2 shows an embodiment of a rotatable member 20 in
greater detail. Desirably, the rotatable member 20 defines a
bowstring track 50. In some embodiments, the bowstring track 50
extends about a periphery of the rotatable member 20. At least a
portion of the bowstring 30 is oriented in the bowstring track 50,
and bowstring 30 feeds out from the bowstring track 50 as the bow
is drawn. In some embodiments, the rotatable member 20 comprises a
first post 52 that serves as a terminal post, and a terminal loop
of the bowstring 30 is anchored to the first post 52.
[0034] FIG. 2 shows an embodiment of a cam portion 24, which
desirably defines a cam track 25. When the bow is drawn, power
cable (e.g. 40) is desirably taken up in the cam track 25. In some
embodiments, the rotatable member 20 comprises a second post 53
that serves as a terminal post, and a terminal loop of the power
cable (e.g. 40) is anchored to the second post 53. In some
embodiments, the cam portion 24 comprises a module portion 28.
Desirably, the module portion 28 can be removed from the rotatable
member 20 and alternative modules having different shapes can be
substituted. In some embodiments, one or more fasteners 86 secure
the module 28 to the rotatable member 20. Desirably, the module
portion 28 comprises a cam track 25. Different modules can have
differently shaped cam track portions and changing modules can
change the draw characteristics of the bow, for example adjusting
draw weight, draw length, etc.
[0035] FIG. 3 shows an embodiment of a bow 10 in a drawn
orientation. FIG. 4 shows a portion of FIG. 3 in greater detail.
These Figures illustrate how the draw stop 70 of a rotatable member
20, 22 will stop rotation of the rotatable member 20, 22 at full
draw.
[0036] As the rotatable member 20 reaches full draw, the draw stop
70 contacts the power cable 40, thereby preventing further rotation
of the rotatable member 20. In some embodiments, at full draw, the
power cable 40 occupies the entire cam track 25 of the first
rotatable member 20. In some embodiments, the draw stop 70 contacts
the power cable 40 at a location 46 that is spaced apart from the
cam track 25.
[0037] A draw stop 70 arranged to contact the power cable 40 as
shown in FIG. 4 will stop the draw cycle with an intermediate level
of abruptness. A bow that excludes a draw stop will stop the draw
cycle with low abruptness, while a bow with a draw stop arranged to
contact a limb will stop the draw cycle with high abruptness.
[0038] Although FIG. 4 illustrates the draw stop 70 as being a
portion of a module 28 that comprises a cam track 25, a draw stop
70 can comprise any suitable structure arranged to contact a power
cable 40 to limit draw. In some embodiments, a rotatable member 20
comprises a draw stop 70. In some embodiments, a draw stop 70
comprises a cantilever structure. In some embodiments, a cam
portion 24 comprises the draw stop 70. In some embodiments, a
module portion 28 comprises the draw stop 70. In some embodiments,
a draw stop 70 is removable from a rotatable member 20. In some
embodiments, a draw stop 70 is an integral portion of a rotatable
member 20.
[0039] FIG. 4 shows another embodiment of a rotatable member 20 and
another embodiment of a draw stop 70. In some embodiments, a draw
stop 70 comprises a cavity 72. Desirably, a portion of a power
cable is oriented in the cavity 72 at full draw.
[0040] In some embodiments, a draw stop 70 comprises an arcuate
surface 73 that defines the cavity 72. Desirably, a portion of the
arcuate surface 73 contacts a power cable at full draw. In some
embodiments, the arcuate surface 73 defines a portion of a
cylindrical surface. In some embodiments, a cavity 72 defines a
central longitudinal axis 76, and a power cable aligns with the
central longitudinal axis 76 at full draw. In some embodiments, a
terminal portion of the cam track 25 defines an axis 36, and the
central longitudinal axis 76 of the cavity 72 is collinear with the
axis 36.
[0041] FIG. 6 shows an end view of an embodiment of a bow 10. In
some embodiments, the bow 10 comprises a cable guard 74 arranged to
bias the power cables 40, 42 (or a power cable and a control cable
in a single cam bow) laterally away from a plane of bowstring 30
travel. In some embodiments, the first power cable 40 extends from
a first cam 24 located to a first side 56 of the bow 10 and extends
to an anchor 66 located to a second side 57 of the bow 10. In some
embodiments, the second power cable 42 extends from a second cam 26
located to a first side 56 of the bow 10 and extends to an anchor
67 located to a second side 57 of the bow 10. Thus, in some
embodiments, cams 24, 26 are located on a common side of the bow
and anchors 66, 67 are located on the other side. In some other
embodiments, a cam and an anchor can be located on each side of the
bow.
[0042] In some embodiments, a cable guard 74 is arranged to contact
one or more power cables 40, 42 at a location that is equally
spaced from the axis of rotation (e.g. 60) of each rotatable member
20, 22.
[0043] The cables 40, 42 of a bow 10 can both be biased to a first
side 56 of the bow 10 by the cable guard 74. In some embodiments, a
draw stop 70 comprises an asymmetrical structure.
[0044] FIG. 7 shows another embodiment of a rotatable member 20 and
another embodiment of a draw stop 70. FIG. 8 shows the rotatable
member 20 from a different viewing angle and also omits a power
cable for clarity. The first direction 56, which indicates a
direction that a cable guard 74 may bias cables 40, 42, is shown in
FIG. 8.
[0045] In some embodiments, a draw stop 70 comprises a flange 94
arranged to contain a power cable 40. In some embodiments, the
flange 94 at least partially defines a cavity 72 defined by the
draw stop 70. In some embodiments, a rotatable member 20 comprises
structure 98 oriented to a second side (e.g. 57) of a power cable
40, and the structure can prevent the power cable 40 from moving
laterally in the second direction (e.g. 57). In some embodiments, a
draw stop 70 comprises structure (e.g. flange 94) oriented to a
first side (e.g. 56) of a power cable 40, and the structure 94
prevents the power cable 40 from moving laterally in the first
direction (e.g. 56). In some embodiments, a draw stop 70 comprises
structure (e.g. flange 94) located to a first side of the power
cable 40, and a rotatable member 20 comprises structure 98 located
to a second side of the power cable.
[0046] FIG. 9 shows an exploded view of an embodiment of a
rotatable member 20 having a draw stop 70. In some embodiments, a
draw stop 70 comprises a fastener 90 attached to the draw stop 70.
In some embodiments, the draw stop 70 comprises an aperture 96
arranged to receive a fastener 90. In some embodiments, the
fastener 90 attaches to the draw stop 70 but does not engage
another portion of the rotatable member 20.
[0047] In some embodiments, a fastener 90 comprises a stem 93 and a
head 92. In some embodiments, the head 92 forms a flange 94.
[0048] In some embodiments, a fastener 90 attaches a spacer 88 to
the draw stop 70. FIG. 9 shows several versions of a spacer 88. In
some embodiments, a spacer 88 is cylindrical. In some embodiments,
a spacer 88 is frustoconical. In some embodiments, a spacer 88 is
tapered and increases in diameter along its length. In some
embodiments, a spacer 88 defines a cavity 72. In some embodiments,
a spacer 88 comprises a recess 89, for example to receive a
fastener head 92.
[0049] In some embodiments, portions of the draw stop 70 that
contact the power cable 40 are not elastomeric. In some
embodiments, portions of the draw stop 70 that contact the power
cable 40 are rigid or inelastic.
[0050] A draw stop 70 can be made from any suitable material. Often
a draw stop 70 will comprise a metal such as aluminum. A spacer 88
can be made from any suitable material. Often a spacer 88 comprises
a polymeric material.
[0051] In some embodiments, a draw stop 70 comprises felt applied
to a surface that contacts the power cable 40.
[0052] The above disclosure is intended to be illustrative and not
exhaustive. This description will suggest many variations and
alternatives to one of ordinary skill in this field of art. All
these alternatives and variations are intended to be included
within the scope of the claims where the term "comprising" means
"including, but not limited to." Those familiar with the art may
recognize other equivalents to the specific embodiments described
herein which equivalents are also intended to be encompassed by the
claims.
[0053] Further, the particular features presented in the dependent
claims can be combined with each other in other manners within the
scope of the invention such that the invention should be recognized
as also specifically directed to other embodiments having any other
possible combination of the features of the dependent claims. For
instance, for purposes of claim publication, any dependent claim
which follows should be taken as alternatively written in a
multiple dependent form from all prior claims which possess all
antecedents referenced in such dependent claim if such multiple
dependent format is an accepted format within the jurisdiction
(e.g. each claim depending directly from claim 1 should be
alternatively taken as depending from all previous claims). In
jurisdictions where multiple dependent claim formats are
restricted, the following dependent claims should each be also
taken as alternatively written in each singly dependent claim
format which creates a dependency from a prior
antecedent-possessing claim other than the specific claim listed in
such dependent claim below.
[0054] This completes the description of the preferred and
alternate embodiments of the invention. Those skilled in the art
may recognize other equivalents to the specific embodiment
described herein which equivalents are intended to be encompassed
by the claims attached hereto.
* * * * *