Photoelectric pinfall detection system

Details Photoelectric pinfall detection system Photoelectric pinfall detection system

1985-01-28

1986-12-16

Pinkham, Richard C.

Amusement devices: games

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

Target

A63D 500

Patent

active

046291890

ABSTRACT:
The invention provides a photoelectric bowling pinfall detection system which automatically scans and displays the number of the knocked down pins after each ball delivery. The system comprises an emitter positioned offset to the central longitudinal axis of the bowling lane in a certain distance to the pin arrangement, which emits a sharply focussed beam towards the pins. A receiver is provided behind the pins which detects the receipt of the focussed beam. If the beam is swept along the pins, each standing pin causes an interruption of the beam which is recorded by the receiver and fed to a processing circuitry. From the output signals of the receiver information about the numbers of the knocked down pins is derived and displayed.

REFERENCES:
patent: 3804408 (1974-04-01), Saito et al.
patent: 3825749 (1974-07-01), Gautraud et al.
patent: 4140314 (1979-02-01), Kaenel

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