Patent ID: 7047958

Claim:
A compound archery bow comprising a substantially inflexible riser having a grip for the hand of an archer, and, at either end of the riser: a flexible member comprising at least one limb having a proximal end connected to the riser and a free distal end; a freely rotatable idler pulley supported at said distal end; a pair of side plates connected to said riser on opposite sides thereof; said side plates supporting a mechanism comprising a first axle extending between the side plates, a spool assembly comprising a bowstring spool and a cam spool mounted for unitary rotation on said first axle, said cam spool being smaller in diameter than said bowstring spool, a second axle extending between the side plates, a cam assembly comprising a major lobe and a minor lobe mounted for unitary rotation on said second axle, a bowstring having two end portions and an intermediate portion, each end portion being wound on a respective one of the bowstring spools, and said intermediate portion extending around each idler pulley, two drive cables, each extending from a first termination on the cam spool to a second termination on the major lobe, a buss cable extending from a first anchor on the minor lobe to a second anchor connected to the distal end of the limb, whereby, when the bowstring is drawn by the archer and bowstring is drawn from the bowstring spool, the drive cable is wound onto the cam spool and withdraw from the major lobe, thus turning the cam assembly and drawing the buss cable onto the minor lobe, which flexes the limb toward the minor lobe.