Patent ID: 7143757
Filing Date: 2006-12-05
Classification: F41B,Y10S

Abstract:
1. In an archery bow comprising: a handle; limbs extending from each end of the handle, and a force draw module mounted to at least one of the limbs, the module rotating about an axis and providing a concentric pathway and an eccentric pathway, a bowstring extending between the limbs and moving through the concentric pathway; and a cable also extending between the limbs and moving through the eccentric pathway, the force draw module increasing a spring rate of the limbs as the compression rate of the limbs decreases during the draw of an arrow for a peak draw weight to be sustained for a longer distance of pull on the bowstring, thus producing greater stored energy and faster arrow speed, when the arrow is released, for a given peak draw weight, the improvement comprising an end of said bowstring being connected to said concentric pathway at a point to provide a rotation of said module greater than 230 degrees to full letoff while the eccentric cable groove rotates from its peak weight position to its full letoff position.