Communications: electrical – Systems – In and out indicators
Patent
1994-05-31
1996-05-28
Swarthout, Brent A.
Communications: electrical
Systems
In and out indicators
34028601, 340326, 340331, 340332, 34081547, 3408155, 34081553, G08B 500
Patent
active
055215785
ABSTRACT:
A combination address display device and doorbell control assembly are provided wherein the doorbell control assembly controls the supply of power to a backlighting assembly of the display device from existing wiring for the doorbell. The display device comprises a flat modular housing which pivots open to permit insertion of a display sandwich therein. The latter includes a sheet containing address numerals and the like a well as protective and appearance enhancing sheets. The backlighting assembly includes a reflector element having stepped openings therein in registration with the address numerals. The doorbell assembly includes a pair of lighted pushbuttons for controlling actuation of the doorbell and a lamp that directs a light beam below the assembly for use in finding one's keys or a similar purpose.
REFERENCES:
patent: 2316856 (1943-04-01), Green
patent: 3135953 (1964-06-01), Bagno
patent: 3159827 (1964-12-01), Wellein
patent: 4011560 (1977-03-01), Mason et al.
patent: 4587753 (1986-05-01), Harper
patent: 4686505 (1987-08-01), Vanderburg
patent: 4901461 (1990-02-01), Edwards et al.
patent: 5043716 (1991-08-01), Latz et al.
Lefkowitz Edward
Swarthout Brent A.
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