Compound bow cams and modules

Details Compound bow cams and modules Compound bow cams and modules

1998-11-18

2000-07-04

Ricci, John A.

Mechanical guns and projectors

Spring

Bow

124900, F41B 510

Patent

active

060823461

ABSTRACT:
A compound bow having a pair of cam modules or secondary cams with at least one cam module having a draw stop integral therewith to engage a harness string of the compound bow at the optimum draw length of the bowstring to prevent this optimum draw length from being exceeded and to efficiently and repeatably store the same quantity of energy in the compound bow. The integral draw stop decreases vibration of the bow in use and cannot be moved to thereby insure that the optimum draw length can be readily achieved throughout the life of the bow. A floor or post is also preferably provided on each cam module to firmly hold and retain one end of a harness string. A track formed in the cam module, which increasingly receives the harness string as a bowstring is drawn, preferably has an inside surface adjacent to a primary cam substantially perpendicular to its axis of rotation and an inclined outside surface spaced from the primary cam providing a track having a width at its outer edge greater than the diameter or width of the harness string to more smoothly receive the harness string within the track to reduce friction between them and thereby reduce string wear and provide an extremely smooth draw of the bowstring.

REFERENCES:
patent: 3486495 (1969-12-01), Allen
patent: 4515142 (1985-05-01), Nurney
patent: 4519374 (1985-05-01), Miller
patent: 4739744 (1988-04-01), Nurney
patent: 5040520 (1991-08-01), Nurney
patent: 5060626 (1991-10-01), Elliott et al.
patent: 5390655 (1995-02-01), Mitchell et al.
patent: 5435292 (1995-07-01), Armstrong

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