Dual-feed single-cam compound bow
DCFirst Claim
1. A compound archery bow comprising a pair of flexible resilient first and second bow limbs with a handle connecting the inner ends thereof;
- a cam journaled at the first bow limb end,a rotational member journaled at the second bow limb end and having at least one peripheral groove portion therein,first and second cable sections having at least portions thereof trained around the rotational member, and wherein one of said cable sections forms a bowstring,an anchor cable extending between the first and second bow limbs having one end fixed to the bow limb on which the rotational member is jounaled and the other end secured to the cam,said cam having at least one eccentric groove for taking up the anchor cable as the bow is being drawn and having means for feeding out the two cable sections as the bow is being drawn, andmeans for securing the ends of the first and second cable sections and the anchor cable sections to the cam.
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Accused Products
Abstract
A cam is eccentrically journaled at one end of a compound archery bow and a pulley is journaled at the other end of the bow. A cable passes around the pulley to form a bowstring section and a second cable section, both sections forming a dual feed single cam compound bow. The amount of feed out to both ends of the bowstring is approximately the same. One embodiment of the cam provides a large radius cam groove and a smaller radius cam groove which are designed to synchronize the rate of cable feed out at both ends of the bowstring section during the drawing operation. An anchor cable is provided to tie the two limbs of the bow together during the flexing of the bow.
74 Citations
41 Claims
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1. A compound archery bow comprising a pair of flexible resilient first and second bow limbs with a handle connecting the inner ends thereof;
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a cam journaled at the first bow limb end, a rotational member journaled at the second bow limb end and having at least one peripheral groove portion therein, first and second cable sections having at least portions thereof trained around the rotational member, and wherein one of said cable sections forms a bowstring, an anchor cable extending between the first and second bow limbs having one end fixed to the bow limb on which the rotational member is jounaled and the other end secured to the cam, said cam having at least one eccentric groove for taking up the anchor cable as the bow is being drawn and having means for feeding out the two cable sections as the bow is being drawn, and means for securing the ends of the first and second cable sections and the anchor cable sections to the cam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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- 22. An eccentrically mounted cam for use in a compound archery bow having means thereon to feed out a first cable section and a second cable section as the bow is being drawn, wherein said means to feed out the first cable section and means to feed out the second cable section comprise first and second grooves having different peripheral lengths and wherein said cam includes a third groove having a different peripheral length than said first and second grooves for receiving an anchor cable section.
- 24. An eccentrically mounted cam for use in a compound archery bow having means thereon to feed out a first cable section and a second cable as the bow is being drawn and means permitting an end of at least one of said cables to be lengthwise adjustably secured to the cam.
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26. An eccentrically mounted cam for use in a compound archery bow having means thereon to feed out a first cable section and a second cable section as the bow is being drawn, wherein said means comprise an eccentric groove which takes up an anchor cable as the bow is being drawn and wherein an anchor pin is provided for securing the ends of the first and second cable sections and the anchor cable to the cam.
- 27. An eccentrically mounted cam for use in a compound archery bow having means thereon to feed out a first cable section and a second cable section as the bow is being drawn and wherein the means for feeding out the first and second cable sections as the bow is being drawn comprise an additional groove in the cam.
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31. A compound archery bow comprising a cam journaled on a first bow member,
a rotational member journaled on a second bow member and having at least one peripheral groove portion therein, first and second cable sections extending from the cam toward the rotational member, and wherein one of said cable sections forms a bowstring, an anchor cable extending between the first and second bow members having one end fixed to the bow member on which the rotational member is jounaled and the other end secured to the cam, said cam having at least one eccentric groove for taking up the anchor cable as the bow is being drawn and having means for feeding out the two cable sections as the bow is being drawn, and means for securing the ends of the first and second cable sections and the anchor cable sections to the cam.
Specification