Periodical switching device capable of adjusting the operation t

Details Periodical switching device capable of adjusting the operation t Periodical switching device capable of adjusting the operation t

1978-08-01

1980-12-30

Truhe, J. V.

Electricity: circuit makers and breakers

Retarded

Clock train

200 38FA, 200 39R, H01H 700

Patent

active

042425476

ABSTRACT:
A periodical switching device has adjustable periodic ON durations and has rapid on, off transitions. A swinging member rides on a rotating cam. An operation member controlled by the cam and by the swinging member turns a switch on when the cam moves the operation member and turns the switch off when the cam moves the swinging member to release the operation member. An adjusting member changes position of the swinging member to vary its point and time of initial contact with the cam to selectively control release of the operation member which turns OFF the switch. A feeding device advances the adjusting means to 100 percent conduction when the adjusting device is moved to select about 83 percent or more conduction. An old setting-clearing device moves the operation member relatively to the swinging member so that the members follow the newly set durations immediately upon beginning new cycles.

REFERENCES:
patent: 3922924 (1975-12-01), Harris
patent: 3995133 (1976-11-01), Anderson

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