DUAL FEED-OUT ARCHERY CAM
First Claim
1. A cam assembly configured to be rotatably supported at a pivot axis on a limb of an archery bow, said cam assembly comprising:
- a primary string feed-out configured and operative to feed out a length of a string as said bow is drawn; and
a secondary string feed-out which is configured and operative so that when said bow is drawn and said primary string feed-out feeds out said length of said string, said secondary string feed-out, during an initial portion of the draw, takes up a portion of the length of said string and thereafter lets out a portion of the length of said string.
4 Assignments
0 Petitions
Accused Products
Abstract
An archery bow includes a cam assembly rotatably supported at a pivot axis on a limb of the bow. The cam assembly includes a primary string feed-out which operates to feed out a length of a bowstring as the bow is drawn. The cam assembly includes a control system associated with a secondary string feed-out. The control system is operative, during the time the bow is being drawn and the primary string is being fed out, to control the effective length of a secondary portion of the string such that during an initial portion of the draw of the bow, the effective length of that secondary portion decreases and so that during a subsequent portion of the draw, the effective length increases. The controller thereby operates to modify the force draw profile of the bow so as to increase the amount of energy stored therein during the initial portion of the draw.
13 Citations
14 Claims
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1. A cam assembly configured to be rotatably supported at a pivot axis on a limb of an archery bow, said cam assembly comprising:
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a primary string feed-out configured and operative to feed out a length of a string as said bow is drawn; and a secondary string feed-out which is configured and operative so that when said bow is drawn and said primary string feed-out feeds out said length of said string, said secondary string feed-out, during an initial portion of the draw, takes up a portion of the length of said string and thereafter lets out a portion of the length of said string. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A cam assembly configured to be rotatably supported upon a limb of an archery bow, said cam assembly comprising:
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a primary string feed-out configured and operative to feed out a string as said bow is drawn; and a secondary string feed-out, the secondary string feed-out including a control cable and a cable controller, said cable controller being operative, when said string is being fed out from said primary string feed-out, to simultaneously shorten a first portion of the length of said control cable at a first rate and lengthen a second portion of the length of said control cable at a second rate which is different from said first rate, and wherein said control cable is mechanically coupled to said string so as to control the rate at which said string is let out and taken up by said secondary string feed as said bow is drawn.
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Specification