Electromechanical short interval timer

Details Electromechanical short interval timer Electromechanical short interval timer

1983-11-10

1984-12-25

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

G04F 800

Patent

active

044900511

ABSTRACT:
An electromechanical short interval timer has an actuating dial which can be manually rotated from a rest position to establish a time-elapse period. An electric motor returns the dial to its rest position. A timing circuit delivers electric pulses to drive the motor. A frequency selector switch is connected to or within the timing circuit whereby the pulse frequency can be varied. In this way, the time elapse period which is set by a given amount of dial rotation can be varied in a simplified manner. The dial activates a signal emitter before reaching its rest position, and simultaneously activates a timer circuit to continue returning the dial to its rest position. The dial engages a movable stop at both ends of its 360 degree travel stroke which assumes that the dial travels exactly 360 degrees.

REFERENCES:
patent: 3431720 (1969-03-01), Ehner et al.
patent: 3713285 (1973-01-01), Haupe
patent: 3789600 (1974-02-01), Champan
patent: 4222226 (1980-09-01), Miyatake et al.

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