Patent ID: 8899217

Claim:
A pulley system for a bow having a riser with at least one limb attached at one end on each side of a medial plane of the riser, the pulley system comprising: at least one cam pivotally mounted to a free end of each of the limbs on each side of the medial plane of the riser, each of the cams comprising a bowstring cam groove and upper and lower power cord cams located above and below the bowstring cam groove; a bow string wound on the bowstring cam grooves and travels in the respective bowstring cam grooves to be wound and unwound therefrom; and upper and lower power cords having distal ends attached to fixed anchor points on the bow on opposite sides of the medial plane and wound on upper and lower power cord cam grooves of the upper and lower power cord cams, respectively, such that the upper and lower power cords do not extend across the medial plane to the riser, wherein the power cord cam grooves and the bowstring cam grooves are programmed such that the draw weight on the bow string increases from full brace position to full draw position without weight drop-off.