Patent ID: 8136514

Claim:
A projectile launching device, comprising: a rigid riser; a hand grip operatively associated with said riser; at least one spring assembly operatively connected to said rigid riser, said spring assembly including a rotating member operatively associated therewith; a bowstring operatively associated with said spring assembly such that each end of the bowstring is attached to the rotating member; a projectile releasably attached to said bowstring; and means, in addition to said bowstring, to energize said spring assembly, whereby upon release of energy stored in said spring assembly said rotating member rotates and said bowstring launches the projectile using only the energy stored in said spring assembly; and wherein said means to energize said spring assembly comprises at least one crank arm with a first end thereof releasably connected to the spring assembly and a second end pivotally attached to a drawbar, whereby movement of said drawbar energizes the spring assembly.