Instructional and/or teaching devices for ball games

Details Instructional and/or teaching devices for ball games Instructional and/or teaching devices for ball games

1979-09-26

1982-03-02

Pinkham, Richard C.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273186C, A63B 6936

Patent

active

043175678

ABSTRACT:
A device for enabling a player to practice swinging a club, racket, bat or the like comprises two telescopically engaged parts, one having a handle or grip and the other simulating or carrying the head portion of the club. A release mechanism is provided including an axially movable weight which prevents relative axial movement of the two telescopically engaged parts until centrifugal force induced by the swing of the device exceeds a predetermined value. The weight is spring urged into position locking the two parts together and means are provided to adjust the compression of the spring.

REFERENCES:
patent: 2772887 (1956-12-01), Blake
patent: 3113782 (1963-12-01), Guier
patent: 3136546 (1964-06-01), Conolly
patent: 3173688 (1965-03-01), Green
patent: 3897058 (1975-07-01), Koch
patent: 3931968 (1976-01-01), Hedberg
patent: 4027879 (1977-06-01), Wright

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