Amusement devices: games – Surface projectile game; game element – Simulated game
Patent
1974-02-14
1977-03-15
Shapiro, Paul E.
Amusement devices: games
Surface projectile game; game element
Simulated game
2731065B, F41B 502
Patent
active
040120430
ABSTRACT:
An archery arrow comprising a shaft having a circular cross section with a forward end and a rearward end. The improvement comprises a vane system adjacent the rearward end of the shaft for stabilizing the flight of the arrow. The vane system comprises first and second vanes disposed diametrically opposite one another on the vane shaft. Each vane is defined by an integral member having an aerodynamic fin extending tangentially from one side of the shaft and supporting the vane so that the vane is spaced from the shaft, the spacing between the vane and the shaft decreasing from the forward end of the vane to the rearward end thereof so as to define a pocket between the vane and the shaft of decreasing volume from front to rear to create pressures upon the vane and the aerodynamic fin to cause the arrow to rotate.
A hunting arrowhead is also disclosed. The head includes two identical halves. Each of the halves includes a pair of planar sections with the planar sections of one-half abutting the planar sections of the other half, one of the planar sections of each half includes an outwardly extending fin. The fins are disposed on diametrically opposite sides of the arrow shaft and are inclined inwardly toward each other or toward the arrow shaft in a direction from front to rear.
REFERENCES:
patent: 2193397 (1940-03-01), Dykes
patent: 2212345 (1940-08-01), Krieger
patent: 2589137 (1952-03-01), Ramsey
patent: 2874968 (1959-02-01), Zielinski
patent: 2887319 (1959-05-01), Lay
patent: 3595579 (1971-07-01), Benoit
patent: 3672677 (1972-06-01), Moore
patent: 3756602 (1973-09-01), Carella
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