Compound bow with high power and extreme let-off

Details Compound bow with high power and extreme let-off Compound bow with high power and extreme let-off

1993-06-03

1994-12-20

Reese, Randolph A.

Mechanical guns and projectors

Spring

Bow

124 88, 124 231, F41B 500

Patent

active

053738314

ABSTRACT:
An improved compound bow apparatus with extreme let-off and high power is disclosed. The preferred embodiment of the instant invention is aesthetically improved, has inherently balanced limbs that require no adjustment, and has an improved dynamic balance and center of gravity. These and additional objects of the invention are accomplished by storing energy in a leaf spring energy storage device as the bow of the instant invention is drawn. Energy is stored by rotating bearing surfaces mounted on linkages attached to upper and lower bow limbs into a leaf spring in a manner that causes a portion of the force from the leaf spring which is proportional to the rotation angle to be absorbed as compression by the linkage, with the remainder causing torque on the upper and lower bow limbs. The movement of upper and lower bow limbs of the instant invention is coordinated with a synchronizing cable, but the force applied to the individual linkages is inherently balanced by allowing the leaf spring to freely pivot.

REFERENCES:
patent: 428912 (1890-05-01), Holmes
patent: 3486495 (1969-12-01), Allen
patent: 3744473 (1973-07-01), Nishioka
patent: 3812835 (1974-05-01), Smith
patent: 4041927 (1977-08-01), Van House
patent: 4756295 (1988-07-01), Guzzetta
patent: 4989577 (1991-02-01), Bixby
patent: 5165382 (1992-11-01), Morrison
patent: 5248467 (1993-09-01), Cushman

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