Compound bow

Details Compound bow Compound bow

1975-03-21

1976-09-21

Pinkham, Richard C.

Mechanical guns and projectors

Spring

Bow

124 86, 124 88, F41B 500

Patent

active

039812901

ABSTRACT:
An archery bow having a riser that is adapted to be grasped by an archer and which has a face and upper and lower, opposite end portions. The inboard ends of a pair of elongate spring members are mounted in cantilevered fashion from the face of the riser, one in association with each opposite end portion thereof. The medial portion of a limb member, in the fashion of a second degree lever, is pivotally mounted on the outboard end of each elongate spring member. A bow string extends between the outboard ends of the two limb members, and a cam follower is presented from the inboard end of each limb member to engage a corresponding cam secured to the face of the riser and which serves as a fulcrum against which the limb member acts to cock the spring member in response to the application of a drawing force to the bow string. The configuration of the cam determines the functional interrelation of the draw weight in response to the draw displacement of the bow string. Reeved pulleys are provided to synchronize movement of the limb members, and the spring members as well as the cams are preferably individually adjustable.

REFERENCES:
patent: 3674001 (1972-07-01), Hitt
patent: 3744473 (1973-07-01), Nishioka
patent: 3812835 (1974-05-01), Smith

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