Mechanical guns and projectors – Spring – Bow
Patent
1996-10-15
1999-07-13
Ricci, John A.
Mechanical guns and projectors
Spring
Bow
124 86, F41B 510
Patent
active
059212276
ABSTRACT:
Disclosed is a compound archery bow having a handle, a pair of resilient bow limbs, and a pulley system for providing let off. Each of the bow limbs has a mounting portion opposing a tip portion. The mounting portion of each of the bow limbs is fastened to the handle opposite the other. The pulley system includeds a bowstring, a take-up string, and a pair of cam wheels. The wheels are each pivotally mounted to a corresponding bow limb tip portion with the bowstring and take-up string being mounting under tension therebetween. Each of the wheels includes a peripheral bowstring track with a first working length and a peripheral take-up string track with a second working length. A ratio of the first working length to the second working length is at least about 2.5. Additional or alternative cam wheel features include a maximum radius ratio of the first track maximum radius to the second track maximum radius of at least about l.75, in a cam ratio of at least 5 for a drawn position of the bow. An uniquely pre-curved bow limb and related compound bow assemblies are also disclosed.
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Allshouse James R.
Petrole Christopher Peter
Indian Industries, Inc.
Ricci John A.
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