Patent ID: 8522763
Filing Date: 2013-09-03
Classification: F41B

Abstract:
1. A spring loaded compound archery bow comprising; a bow riser having a handle portion and two ends; a rigid limb attached to each end of said bow riser; a spring housing mounted on each limb and each said spring housing having an elongated inner cavity extending along an inner cavity axis; a compression spring positioned within said elongated inner cavity of each said spring housing, said compression spring extending along a linear spring axis generally coaxial with said cavity axis between a first end and a second end, said compression spring being axially compressible along said linear spring axis to produce a spring force; a crank rotatably attached to each said spring housing for rotation thereon, each said crank having a crank arm having an end bearing against one said first end of one said spring for compressing each said spring when said crank is rotated; a lever arm attached to each said crank and extending therefrom; a cam rotatable attached to each said lever arm for rotation thereon; and a bow string attached between said cams for rotating each said cams and rotating each said lever arm and crank to axially compress both said compression springs along said spring axis when said bow string is pulled back for shooting an associated arrow, wherein each said spring housing is slidably mounted to each said limb along a sliding axis parallel to said linear spring axis and said each spring housing has a locking fastener to selectively lock the spring housing in a position relative to each said limb.