Two-track system for dual cam compound bow
View Patent ↗The present invention comprises a two-track cam assembly wherein the cam assembly has a bowstring component for housing the bowstring and a power cable component that allows for the take up and let out of the power cable on opposing ends of the power cable component, effectively creating a two-track cam assembly. The efficiency rating of the device achieves 95.8%. The cam assembly can come in a unitary or modular form and further each component (i.e. the bowstring or power cable component) can be in a circular or non-circular form.
1. A cam assembly for use in a compound bow, the cam assembly comprising:
a bowstring assembly comprising a bowstring track for receiving a bowstring;
a power cable assembly comprising a power cable track comprising
a take-up portion for receiving a first power cable;
a let-out portion for receiving a second power cable;
wherein the power cable track, the take-up portion and the let-out portion are substantially coplanar;
a fastening mechanism for releasably attaching the power cable assembly to the bowstring assembly;
a draw-stop pin;
means for changing a draw length parameter.
2. The cam assembly of claim 1 , wherein the means for changing the draw length parameter is a slotted opening with the draw-stop pin disposed therein.
3. The cam assembly of claim 2 , wherein the slotted opening is in the bowstring assembly.
4. The cam assembly of claim 1 , wherein the power cable track is contiguous from the take-up portion to the let-out portion.
5. The cam assembly of claim 1 , wherein the power cable track has a curved portion that contiguously connects the take-up portion to the let-out portion.
6. A cam assembly for use in a compound bow, the cam assembly comprising:
a bowstring assembly comprising a bowstring track for receiving a bowstring;
a power cable assembly comprising a power cable track comprising
a take-up portion for receiving a first power cable;
a let-out portion for receiving a second power cable;
wherein the power cable track, the take-up portion and the let-out portion are substantially coplanar; and
a draw-stop pin that extends through a slotted opening in the bowstring assembly; and
a fastening mechanism for releasably attaching the power cable assembly to the bowstring assembly.
7. The cam assembly of claim 6 , wherein the draw-stop pin is attached to the power cable assembly.
8. A cam assembly for use in a compound bow, the cam assembly comprising:
a bowstring assembly comprising a bowstring track for receiving a bowstring;
a power cable assembly comprising a power cable track comprising
a take-up portion for receiving a first power cable;
a let-out portion for receiving a second power cable;
wherein the power cable track, the take-up portion and the let-out portion are substantially coplanar; and
a fastening mechanism for releasably attaching the power cable assembly to the bowstring assembly;
wherein the power cable assembly is sized and shaped to change operating parameters, including a draw length parameter, of the compound bow, and is designed to be interchanged with a different power cable assembly being of a different size and shape to change the operating parameters of the compound bow.
9. A compound bow comprising:
a first limb portion, a second limb portion and a handle between the first limb portion and the second limb portion;
a first cam assembly attached to the first limb portion, the first cam assembly comprising:
a bowstring assembly comprising a bowstring track for receiving a bowstring;
a power cable assembly comprising a power cable track comprising
a take-up portion for receiving a first power cable;
a let-out portion for receiving a second power cable;
the power cable track, the take-up portion and the let-out portion being substantially coplanar;
a fastening mechanism for releasably attaching the bowstring assembly to the power cable assembly;
a slotted opening;
a draw-stop pin extending through the slotted opening of the bowstring assembly; and
a second cam assembly attached to the second limb portion.
10. The compound bow of claim 9 , wherein the slotted opening is in the bowstring assembly.
11. The compound bow of claim 9 , wherein the power cable track is contiguous from the take-up portion to the let-out portion.
12. The compound bow of claim 9 , wherein the power cable track has a curved portion that contiguously connects the take-up portion to the let-out portion.
13. The compound bow of claim 9 , wherein the draw-stop pin is attached to the power cable assembly.
14. The compound bow of claim 9 , wherein the power cable assembly is sized and shaped to change operating parameters, including a draw length parameter, of the compound bow, and is designed to be interchanged with a different power cable assembly being of a different size and shape to change the operating parameters of the compound bow.