Fire alarm

Details Fire alarm Fire alarm

1995-12-12

1996-10-22

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specified housing

2064595, G08B 2300

Patent

active

055681336

ABSTRACT:
Upon insertion of a fire alarm insert into a corresponding fire alarm mounting, the insert covers the mounting. The insert has a movable fastening comprising a ring, for example, for fastening the insert to the mounting. Indicator elements are included for indicating proper positioning of the insert relative to the mounting.

REFERENCES:
patent: 4315594 (1982-02-01), Niederost
patent: 4881063 (1989-11-01), Fawcett
patent: 5055830 (1991-10-01), Cousins

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