Archery bow with pivoted bow limbs having rotational synchronizer and adjustable draw force mechanisms

摘要

An archery bow which uses a single adjustable load spring instead of the usual pair of flexible bow limbs as the resilient energy medium. Bow limbs which are relatively rigid are pivoted on the handle section and are coupled together and synchronized in travel rate and equalized in forces by a single synchronizing linkage. A single adjustable ratio changing mechanism is used to provide a high mid draw force and a low full draw force and include structure to change the draw distance at which these draw forces occur.