| 摘要 |
A compound bow includes a first and second pulley, each of which is operative, when the bow is drawn, to unwind a portion of a bow string from a bow string groove and to take up a portion of a bow cable so as to decrease its effective length. At least one of the pulleys includes a cable controller which operates to modify the rate at which the effective length of the bow cable is decreasing so that during an initial portion of the draw of the bow, the rate is greater than it would be in the absence of the controller, and during a second portion of the draw, the rate is less than it would be in the absence of the controller. Use of the controller provides a bow which has an inherently balanced draw. |
| 主权项 |
1. An archery bow comprising:
a riser; a first limb and a second limb; a first rotatable assembly supported by the first limb, the first rotatable assembly rotatable about a first pivot axis, the first rotatable assembly comprising a bowstring track, a cam track and a cable anchor, the cable anchor arranged to rotate with respect to the first rotatable assembly about a first rotation axis, the first rotation axis offset from the first pivot axis; a second rotatable assembly supported by the second limb, the second rotatable assembly rotatable about a second pivot axis, the second rotatable assembly comprising a bowstring track, a cam track and a cable anchor, the cable anchor arranged to rotate with respect to the second rotatable assembly about a second rotation axis, the second rotation axis offset from the second pivot axis; a bowstring extending from the first rotatable assembly to the second rotatable assembly; a first cable having a first end and a second end, the first end arranged to be taken up by the cam track of the first rotatable member as the bow is drawn, the second end attached to the cable anchor of the second rotatable assembly; and a second cable having a first end and a second end, the first end arranged to be taken up by the cam track of the second rotatable member as the bow is drawn, the second end attached to the cable anchor of the first rotatable assembly. |
