Remote signaling box

Details Remote signaling box Remote signaling box

1984-08-20

1987-01-20

Weldon, Ulysses

Communications: electrical

Systems

Signal box type

340287, 340308, 200 4301, G08B 2500, H01H 2710

Patent

active

046382976

ABSTRACT:
A remote signaling box uses no glass or breakable parts. The signal box has an unbreakable door that protects a sliding panel and activator which constrains the internal alarm switch. When the door is closed, a foolproof interlock in the sliding panel prevents functioning of the switch. The sliding panel has an opening so that when it is pulled down a spring-loaded activator is released into the opening which allows the internally contained spring-loaded switch to function. No replacement parts are required after the box has been operated. A two-step operation is required for alarming to prevent inadvertent activation. The first step is to open the door which removes the foolproof interlock from the sliding panel. The second step is to pull down the sliding panel. The device is easily reset by moving the sliding panel to its original position and closing the door.

REFERENCES:
patent: 501631 (1893-07-01), Smith
patent: 542074 (1895-07-01), Brombacher
patent: 870963 (1907-10-01), Holden
patent: 1616879 (1927-02-01), Suren
patent: 2000517 (1935-05-01), Horni
patent: 2210512 (1940-08-01), Terjesen
patent: 3183501 (1965-05-01), Seaton
patent: 3767876 (1973-10-01), Batson
patent: 4017844 (1977-04-01), Facchini et al.
patent: 4162485 (1979-07-01), Facchini et al.
patent: 4280120 (1981-07-01), Trafford

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