Multi-apartment building combination communication and security

Details Multi-apartment building combination communication and security Multi-apartment building combination communication and security

1977-08-01

1979-09-11

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

With particular system function

340286R, 340310R, 340531, G08B 2500

Patent

active

041677323

ABSTRACT:
In a building with multiple apartments, wherein there is a "call button and reply," i.e. a communication circuit between the apartments and a lobby area of said building, additional use is made of most of the wiring of said circuit for security purposes. Moreover, in its implementation, the circuit includes a separate light or other emergency signalling device that is associated with each of the apartment call button contacts, so that when said light is illuminated, this not only indicates the existence of an emergency in an apartment but said particular apartment, as distinguished from all the other apartments, is also automatically identified because of its association with said particular call button.

REFERENCES:
patent: 324369 (1885-08-01), Edwards
patent: 3404393 (1968-10-01), Blivice
patent: 3810163 (1974-05-01), Arnold et al.
patent: 3978468 (1976-08-01), Bond et al.

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