Folding limb compound archery bow

Details Folding limb compound archery bow Folding limb compound archery bow

1977-04-15

1980-02-12

Pinkham, Richard C.

Mechanical guns and projectors

Spring

Bow

29235, 124 88, F41B 500

Patent

active

041878264

ABSTRACT:
A compound archery bow has resilient limbs pivotally attached to the opposite ends of a central handle by hinges allowing the limbs to be folded between an operative position and a folded position. The limbs are releasably secured in an operation position by a latch mechanism. A secondary cable interconnects each limb and a tensioning lever on the handle for adjustably pre-tensioning the limbs. A ratchet shaft assembly pivotally mounts the tensioning levers and allows the tension of each limb to be adjusted. The limbs can be relaxed by lengthening a stringer, whereupon the latch mechanism can be opened, allowing the limbs to be released and pivoted on the hinges to their folded position adjacent the belly side of the bow. Cam members are mounted at the outer end of each limb and around which the end segments of the bow string are wrapped at least about 270.degree. in each direction. Thus the cam members can be reversibly rotated to accommodate either tensioning of the bow for projecting an arrow, or relaxing of the bow for release of the limbs. As a result the bow may be folded and unfolded without altering its pre-established tension characteristics.

REFERENCES:
patent: 3207145 (1965-09-01), Browning et al.
patent: 3253587 (1966-05-01), Pearson
patent: 3294078 (1966-12-01), Allen
patent: 3352296 (1967-11-01), Burger
patent: 3486495 (1969-12-01), Allen
patent: 3841295 (1974-10-01), Hunter
patent: 3957027 (1976-05-01), Drake
patent: 4050137 (1977-09-01), Carlson

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