US Patent 9506714 Adjustable pulley assembly for a compound archery bow

A pulley assembly for a compound bow comprises a draw cable pulley and a dual-groove power module attached to the draw cable pulley and adjustable among one or more positions and two orientations. A power cable is taken up into one of the two grooves depending on the power module orientation. Changing the power module orientation the power module position alters one or more of the bow's draw force curve, stored energy, draw length, or draw weight.