Telephone light adapter

Details Telephone light adapter Telephone light adapter

1987-03-02

1988-05-24

Lev, Robert

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379396, H04M 100

Patent

active

047471336

ABSTRACT:
A telephone light adapter comprised of an electronic control box connected to a standard telephone and light fixture, the adapter energizing the light fixture when the control box is in an automatic mode for announcing an incoming telephone call, the light fixture remaining energized for a specified period of time after the termination of the call. The control box also energizes the light fixture when the telephone receiver is moved from the cradle position for dialing or when an extension telephone is in use. A three-position switch located on the control box permits the selection of mode of operation while a user switch permits manual operation.

REFERENCES:
patent: 1985172 (1934-12-01), Keller
patent: 2616972 (1952-11-01), McNutt
patent: 2677043 (1954-04-01), Hawk
patent: 2909614 (1959-10-01), Goyette
patent: 4467144 (1984-08-01), Wilkerson et al.

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