Power circuit control programmable timer

Details Power circuit control programmable timer Power circuit control programmable timer

1980-03-20

1982-08-10

Hix, L. T.

Electrical transmission or interconnection systems

Switching systems

Repetitive make and break

307140, 307141, 3403091, H01H 4304

Patent

active

043440002

ABSTRACT:
One form of the timer is designed to be mounted over and behind a conventional wall switch cover plate and includes a two position timer condition-setting arm, a rotatable and depressible time setting dial knob and an indicator on the front of the cover plate. When the arm is moved to a timer-on position, the indicator flashes to indicate that timer programming is needed. This may be achieved in real time over the first twenty-four hours after a 30 minute play period by depressing the knob acting as an on and off power switch control push button to turn the light circuit on and off in a normal manner. Fast normal programming is achieved by rotating the knob to various time settings and depressing the knob to set ON or OFF markers in timer memory. A full twenty-four hour programming is completed by either completing a full rotation of the knob over the full twenty-four hour time settings, with at least one ON and one OFF depression, or by a similar pair of knob depressions without such a full rotation, OFF markers then being automatically set by the timer to complete the timer programming. The indicator comes steady-on to indicate that the timer is fully programmed and in an automatic mode of operation. The automatic operation is temporarily overridden by depression of the knob or permanently overridden by a simple distinctive speed or time duration depression of the knob.

REFERENCES:
patent: 3239723 (1966-03-01), Washington
patent: 4002925 (1977-01-01), Monahan
patent: 4035661 (1977-07-01), Carlson
patent: 4151425 (1979-04-01), Cappa

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