Volley ball rotation counter

Details Volley ball rotation counter Volley ball rotation counter

1977-12-09

1979-11-06

Swisher, S. Clement

Signals and indicators

Indicators

Game type

116312, A63B 7106

Patent

active

041731972

ABSTRACT:
A volley ball rotation counter for keeping track of the rotation of the serve, having right and left rotatable upwardly facing discs capable of receiving visible removable markings, the discs having indicia thereon indicating six symbolic playing positions on each disc and spaced around the axis of each disc, disc rotation retarding devices mounted on a frame and for resisting accidental disc rotation and permitting said discs to be rotated manually in clockwise directions when an operator manually engages an edge of a disc to urge said disc into rotation.

REFERENCES:
patent: 1460296 (1923-06-01), Welsh
patent: 2134039 (1938-10-01), Gibbs
patent: 2192430 (1940-03-01), Branner
patent: 2715990 (1955-08-01), Austin
patent: 3739740 (1973-06-01), Fromer
patent: 3936963 (1976-02-01), Chan
patent: 3941080 (1976-03-01), Ford

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