Switch timer

Details Switch timer Switch timer

1983-11-07

1985-01-15

Goldberg, E. A.

Electrical transmission or interconnection systems

Switching systems

Repetitive make and break

315360, 307141, 307143, H01H 4304

Patent

active

044940122

ABSTRACT:
A switching timer device includes a manual switch having "on", "off" and "timer" positions. When the switch is set in the "on" position a load is supplied continuous power from a source. When the switch is set in the "timer" position, a load-powering power switch is closed for a predetermined length of time determined by a timer that is automatically reset when the manual switch is so actuated, and after elapse of the predetermined time the power switch is opened to de-energize the load. The timer is configured as a direct replacement for existing wall-mounted switch units without requiring access to the low side of the line, and consumes no internal power when in the normal "on" position.

REFERENCES:
patent: 4002925 (1977-01-01), Monahan
patent: 4096542 (1978-06-01), Pappas et al.
patent: 4336464 (1982-06-01), Weber
patent: 4349748 (1982-09-01), Goldstein et al.

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