Flashing address-indicating door sign

Details Flashing address-indicating door sign Flashing address-indicating door sign

1975-05-30

1977-01-11

Caldwell, John W.

Communications: electrical

Systems

Signal light systems

200156, 340331, G08B 500

Patent

active

040030407

ABSTRACT:
A flashing door sign comprises a casing having illuminable house numbers at the front thereof. The casing contains red and white light bulbs which are selectively operable by a switch located inside of the house; the switch has positions corresponding to a continuous white light, flashing white light, and flashing red light to indicate an emergency. The switch must be moved in a non-rotational direction to enter the emergency position.

REFERENCES:
patent: 1080167 (1913-12-01), Quertier
patent: 1606404 (1926-11-01), Eastman
patent: 2054955 (1936-09-01), Stepham
patent: 2498651 (1950-02-01), Crom
patent: 2669649 (1954-02-01), Webster
patent: 3360791 (1967-12-01), Lazar
patent: 3599201 (1971-08-01), Clardy et al.
patent: 3863236 (1975-01-01), Clardy

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