# US 2014/0190460 A1 · Compound bow system

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- Number: US 2014/0190460 A1
- Document ID: US20140190460A1
- Status: Published application
- Kind: A1
- Application number: 14/146,782
- Filed: 2014-01-03
- Published: 2014-07-10
- Earliest claimed: 2013-01-07
- Assignees: Bear Archery, Inc.
- Applicants: Bear Archery, Inc.
- Inventors: Timothy Langley
- Web page: https://patentgrep.com/patent/US20140190460A1

## CPC

- F41B 5/10: Compound bows {(compound crossbows F41B5/123)}
- F41B 5/105: {Cams or pulleys for compound bows}
- F41B 5/0094: {Non-traditional bows, e.g. having hinged limbs or non-stave geometry}
- Y10S 124/90: Limb tip rotatable element structure
- F41B: WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR (projectiles for fishing, e.g. fish-spears, A01K81/00; sports implements for throwing A63B65/00, e.g. boomerangs A63B65/08; stationary apparatus for projecting sports balls, e.g. tennis balls, A63B69/40; throwing or slinging toys A63H33/18; knives, axes B26B; projectiles or missiles other than those incorporating springs as projecting means F42B6/00)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

Certain embodiments of the present disclosure describe a compound archery bow that has a rigid vertical riser structure. At least one flexible limb extends rearward from the vertical riser structure. One end of the flexible limb is secured to the cable arrangement of the compound bow, so that when the bowstring is drawn, the flexible limb is flexed toward the cams of the bow. As the flexible limb is bent, it stores energy that is transferred to an arrow when the bowstring is released.

## Claims

### Claim 1

An archery bow, comprising:
a rigid vertical riser assembly with rearward extending portions;
upper and lower rotatable elements wherein each of said rotatable elements are mounted to said rearward extending portions;
at least one flexible limb wherein the base of said flexible limb is mounted to said vertical riser assembly;
a cable arrangement defining a bowstring and trained around said upper and lower rotatable elements, wherein one end of said cable arrangement is secured to said at least one flexible limb; and
an area defined between said vertical riser assembly and said bowstring;
wherein said flexible limb extends rearward from said rigid vertical riser assembly into the area; and,
wherein drawing said bowstring applies force to said flexible limb causing said limb to bend and store energy.

### Claim 2 (depends on 1)

An archery bow as described in claim 1, comprising a second flexible limb wherein the base of said second flexible limb is mounted to said vertical riser assembly and wherein said second flexible limb extends rearward from said vertical riser structure into the area.

### Claim 3 (depends on 1)

An archery bow as described in claim 1, wherein said vertical riser assembly comprises a brace wherein said brace engages said at least one flexible limb and defines a fulcrum point around which said flexible limb can bend.

### Claim 4 (depends on 1)

An archery bow as described in claim 1, wherein the vertical distance between the attachment point of said cable arrangement to said flexible limb and said rotatable element is greater than the horizontal distance between the attachment point of said cable arrangement to said flexible limb and said rotatable element, so that the force applied to said flexible limb is primarily vertical force.

### Claim 5 (depends on 1)

An archery bow as described in claim 1, wherein said rotatable elements are circular wheels.

### Claim 6 (depends on 1)

An archery bow as described in claim 1, wherein said rearward extending portions are separate pieces mounted to a vertical riser structure.

### Claim 7

An archery bow, comprising:
a rigid vertical riser assembly;
a portion extending rearward from the upper portion of said vertical riser assembly;
a portion extending rearward from the lower portion of said vertical riser assembly;
upper and lower rotatable elements mounted to said respective upper and lower rearward extending portions;
at least one flexible limb with a base mounted to said vertical riser assembly wherein said flexible limb extends rearward from said vertical riser assembly;
a cable arrangement defining a bowstring and trained around said upper and lower rotatable elements and extending to said at least one flexible limb;
wherein one end of said cable arrangement is secured to said flexible limb; and,
wherein drawing said bowstring applies force to said at least one flexible limb causing said limb to bend and store energy.

### Claim 8 (depends on 7)

The archery bow described in claim 7, wherein said at least one flexible limb comprises upper and lower flexible limbs wherein each flexible limb extends rearward from said vertical riser assembly and wherein one end of said cable arrangement is secured to said upper flexible limb and the other end of said cable arrangement is secured to said lower flexible limb.

### Claim 9 (depends on 7)

The archery bow described in claim 7, wherein said upper rearward extending portion and said lower rearward extending portion are separate pieces that are mounted to a vertical riser structure.

### Claim 10 (depends on 9)

The archery bow described in claim 9, wherein at least one of said rearward extending portions is made of two parallel plates mounted to said vertical riser structure, and wherein said flexible limb is situated between said plates.

### Claim 11 (depends on 7)

The archery bow as described in claim 7, wherein the base of said flexible limb is attached within the vertex defined by a vertical axis of said vertical riser assembly and a rearward axis of one of said rearward extending portions.

### Claim 12 (depends on 7)

The archery bow as described in claim 7, comprising a brace mounted on one of said rearward extending portions wherein said brace defines a fulcrum point around which said flexible limb can bend.

### Claim 13 (depends on 12)

The archery bow described in claim 12, wherein the position of said brace is adjustable to change the fulcrum position applied to said flexible limb.

### Claim 14

An archery bow, comprising:
a rigid vertical riser assembly defining a vertical axis and including at least one rearward extending portion defining a longitudinal axis;
upper and lower rotatable elements mounted to said vertical riser assembly;
a cable arrangement defining a bowstring and trained around said upper and lower rotatable elements;
an internal angle toward the bowstring defined by the longitudinal axis of said rearward extending portion and the vertical axis of said vertical riser assembly;
at least one flexible limb wherein the base of said limb is attached to said riser assembly and wherein said flexible limb extends rearward within said internal angle;
wherein at least one end of said cable arrangement is attached to said flexible limb; and,
wherein drawing said bowstring applies force to said flexible limb causing said limb to bend and store energy.

### Claim 15 (depends on 14)

The archery bow described in claim 14, wherein said riser assembly includes two of said rearward extending portions each defining a longitudinal axis and two flexible limbs wherein each of said flexible limbs is situated in an internal angle defined by a longitudinal axis of a respective one of said extending portions and the vertical axis of said vertical riser assembly.

### Claim 16 (depends on 14)

The archery bow as described in claim 14, wherein the base of said flexible limb is mounted within the vertex of said vertical axis and said longitudinal axis.

### Claim 17 (depends on 14)

An archery bow as described in claim 14, wherein the vertical distance between the attachment point of said cable arrangement to said flexible limb and said rotatable element is greater than the horizontal distance between the attachment point of said cable arrangement to said flexible limb and said rotatable element, so that the force applied to said flexible limb is primarily vertical force.

### Claim 18 (depends on 14)

An archery bow as described in claim 14, wherein said at least one rearward extending portion is a separate piece that is mounted to a vertical riser structure.

### Claim 19 (depends on 14)

The archery bow described in claim 14, wherein said riser assembly comprises a brace wherein said brace defines a fulcrum point around which said flexible limb can bend.

### Claim 20 (depends on 19)

The archery bow described in claim 19, wherein said brace is adjustable so that the point along the limb at which said brace acts as a fulcrum can be adjusted.