| CPC F41B 5/12 (2013.01) [F41B 5/1469 (2013.01); F41B 5/1484 (2013.01)] | 12 Claims |
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1. A cranking mechanism for a crossbow comprising:
a driven gear coupled to a spool and having a first axis of rotation, a drive gear having a second axis of rotation and operably coupled with said driven gear, a drive shaft includes a first driven end and a second end and is axial with said drive gear, a one way bearing is selectively fixed radially by a one way bearing retainer or selectively free to rotate radially by disengagement of said one way bearing retainer, an inertia brake mechanism radially coupled to said drive shaft, said inertia brake mechanism includes a first brake plate, a second brake plate and a brake ring, said brake ring having a plurality of radially spaced recesses, each said brake plate includes a first side, a second side, and a perimeter, said perimeter includes a flat portion and a curved portion, said flat portion of said first and second brake plates face each other, said first and second brake plates slide relative to each other within said brake ring, said curved portion includes a plurality of protrusions sized to interact with said plurality of radially spaced recesses of said brake ring, a peripheral space is created between said plurality of protrusions and radially spaced recesses; and
a flexible member having a first end coupled to said spool and a second end coupled to a bowstring drawing device, said drive shaft is rotated a first direction causing rotation of said drive gear and said driven gear, winding said flexible member on said spool, said one way bearing retainer engages said one way bearing preventing rotation of said drive shaft in a second direction, said inertia brake plates rotate freely within said peripheral space.
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