Game with an electromagnetic ball detector

Details Game with an electromagnetic ball detector Game with an electromagnetic ball detector

1982-09-27

1985-09-24

Pinkham, Richard C.

Amusement devices: games

Surface projectile game; game element

Ball games

273181E, 273127R, A63B 7100

Patent

active

045429057

ABSTRACT:
A ball detector senses and signals the presence of a metal containing ball near preselected points on a game playfield. The ball detector is positioned to avoid contact with the ball and includes an electromagnet for generating a magnetic flux near the preselected points on the game playfield and a sensor for measuring the time rate of change of the magnetic flux induced by passage of the ball through the magnetic flux.

REFERENCES:
patent: 2184867 (1939-12-01), Williams et al.
patent: 2524546 (1950-10-01), Sinclaire
patent: 2574721 (1951-11-01), Von Stoeser
patent: 2966561 (1980-12-01), Durant
patent: 3843132 (1974-10-01), Ferguson
patent: 4015845 (1977-04-01), Sines
patent: 4097047 (1978-06-01), Ochi
patent: 4116435 (1978-09-01), Sines et al.
patent: 4260156 (1981-04-01), Momura
patent: 4391447 (1983-07-01), Dudley

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