Mechanical guns and projectors – Spring – Bow
Patent
1996-06-11
1997-09-02
Ricci, John A.
Mechanical guns and projectors
Spring
Bow
124 86, 124 87, F41B 500, F41G 1467
Patent
active
056620934
ABSTRACT:
Apparatus to provide improved archery accuracy, by correcting bow handle twist problems, includes: a bar, attached to the bow handle parallel to the position of the arrow; an elastic cord, band, or tube, attached at one end to a front portion of the bar and at the other end to the bow string at a point which aligns the elastic cord with the bar when the bow is at full draw. Slight twisting of the bow handle causes a lateral movement of the rear portion of the bar relative to the elastic cord. Observation of this movement by the archer permits him to change his grip of the bow handle to eliminate the twist and thus improve accuracy. Observation of such movement of the rear portion of the bar is enhanced by placing a small plate at the rear end of the bar together with a pointer on a pivot pin. Other improvements include use of electrical contacts and lights to indicate the presence or absence of twist. When indicator lights are used, a portion of the elastic cord may be replaced with a conductor, such as a copper wire, to improve sensitivity to twist. Electrical contact gaps to either left or right sides may define a gap of only 0.0005 to 0.02 inch and thus provide exceptional sensitivity to either right or left bow handle twist.
REFERENCES:
patent: 3641675 (1972-02-01), Funk
patent: 4116194 (1978-09-01), Topel
patent: 4179613 (1979-12-01), Koren
patent: 4552121 (1985-11-01), Treaster
patent: 4848306 (1989-07-01), Treaster
patent: 4961264 (1990-10-01), Topel
patent: 5175937 (1993-01-01), Emerson
Hill Philip
Ricci John A.
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