Over the arrow shaft broad head

Details Over the arrow shaft broad head Over the arrow shaft broad head

1992-08-07

1996-03-05

Shapiro, Paul E.

Amusement devices: games

Problem eliciting response

F42B 608

Patent

active

054960436

ABSTRACT:
An overshaft hunting broadhead is used to duplicate practice arrow balance point and flight characteristics. Assuming the optimal balance point of the practice arrow is in accord with manufacturer's recommendations, removal of the practice arrow point and converting to an overshaft hunting broadhead will duplicate the balance point, weight and flight characteristics of the arrow the archer has become accustomed to while practicing. The arrow shaft enters the ferrule of the overshaft hunting broadhead. The ferrule is free to rotate about the axis of the arrow's shaft to be properly positioned, then securely tightened by rotating the arrow tip. The ferrule is equipped to hold cutting edges (razors). The ferrule is coupled securely to the end of the arrow shaft by a hunting point tip that couples into a standard threaded insert in the arrow shaft. The broad head ferrule will not experience the load at impact that is typical to existing broad head styles due to the reinforcement of the arrow shaft by an arrow shaft insert located concentrically and internally beneath the overshaft broadhead ferrule.

REFERENCES:
patent: 3910579 (1975-10-01), Sprandel
patent: 4254958 (1981-03-01), Bateman, III
patent: 4268038 (1981-05-01), Wierenga
patent: 4380340 (1983-04-01), Simo
patent: 4643435 (1987-02-01), Mosacchia
patent: 4986550 (1991-01-01), Segovia
patent: 5066021 (1991-11-01), De Lucia
Archery, Apr. 1978, p. 14, Snuggers.

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