Electrical transmission or interconnection systems – Switching systems – Switch actuation
Patent
1987-10-19
1988-10-11
Miska, Vit W.
Electrical transmission or interconnection systems
Switching systems
Switch actuation
3071414, H01H 700
Patent
active
047773847
ABSTRACT:
A two mode timing device is described for insertion between an energizing control switch and a load. The device enables the load to be controlled in either a timing mode or a continuous mode. Selection of the mode that the device operates in depends upon a novel use of the energizing control switch and, in particular, depends upon usage of the control switch to de-energize the device for either a long duration or a short duration. Upon re-energizing the device, the load is then controlled in either the selected timing mode or the selected continuous mode. The timed mode has two variations. One timed mode embodiment energizes the load immediately and upon expiry of an internal selectable timer will de-energize the load. The other timed mode embodiment initially leaves the load de-energized, and upon expiry of the internal timer then energizes the load. The selection of continuous mode operation simply energizes the load for as long as the device itself is energized. The two timed modes and the one continuous mode give rise to four different versions of the device. The devices can be embodied for use with household light sockets, switched electrical outlets or wired directly into a circuit to control the associated load.
REFERENCES:
patent: 4002925 (1977-01-01), Monahan
patent: 4415943 (1983-11-01), Wortman
patent: 4540984 (1985-09-01), Waldman
patent: 4642479 (1987-02-01), Lombardi et al.
Altenhof Everett J.
Altenhof Terrence G.
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