Mechanical guns and projectors – Spring – Bow
Patent
1998-11-10
2000-06-20
Ricci, John A.
Mechanical guns and projectors
Spring
Bow
F41B 510
Patent
active
060765127
ABSTRACT:
An improvement to a compound archery bow with cam pulleys positioned on upper and lower flexible limbs, the improvement involving a synchronizing pulley mechanism attached to a handle-riser. A draw string interfaces with each of the cam pulleys. An upper and lower power string interface with each cam pulley and interface with the synchronizing pulley mechanism. Upper and lower limb strings interface with the synchronizing pulley mechanism and attach to the upper and lower flexible limbs causing the flexible limbs to be coupled to each other such that each limb moves the same amount of deflection during the draw of the draw string and during launching of an arrow. Variations in limb flexibility from one limb to the other will not affect the amount of limb deflection. Movement of a nocking point of the draw string will be on a straight line parallel to the centerline of the archery bow during arrow launch.
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Drasler William J.
Thielen Joseph M.
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