Ball projecting device capable of providing spin

Details Ball projecting device capable of providing spin Ball projecting device capable of providing spin

1979-05-25

1982-08-24

Stouffer, Richard T.

Mechanical guns and projectors

Fluid pressure

124 83, F41F 104

Patent

active

043455786

ABSTRACT:
A ball projecting device, preferably pneumatically operated, is provided wherein the projected ball has "spin". The device comprises a projection tube including a curved portion, wherein the area of maximum curve radius of the curved portion, preferably is provided with a material having a high coefficient of friction; the ball is caused to roll along this high friction area, thereby imparting spin. The tube is preferably pivotable about two transverse axes, such that the elevation and spin-directing orientation of the tube end can be adjusted. The curved portion of the projection tube has a device for varying the radius of curvature from substantially infinite, i.e., a straight tube, to the desired minimum value.

REFERENCES:
patent: 2460924 (1949-02-01), Dally
patent: 3329063 (1967-07-01), Ehrenburg et al.
patent: 3847132 (1974-11-01), Schatz
patent: 4002336 (1977-01-01), Beaver et al.
patent: 4027646 (1977-06-01), Sweeton
patent: 4054120 (1977-10-01), Foley
patent: 4073280 (1978-02-01), Koehn et al.
patent: 4094294 (1978-06-01), Speer

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