Fire detector

Details Fire detector Fire detector

1984-02-09

1986-03-18

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

340590, G08B 1700

Patent

active

045771863

ABSTRACT:
An improved fire detector appropriately vented to atmosphere is provided, the detector comprising a base supporting a diaphragm enclosing a space between the base and diaphragm, a shell secured to the base enclosing the diaphragm, and a fin for collecting heat from the ambient atmosphere, secured by a ferrule to the shell. A vent aperture is provided through the base from the space between the diaphragm and the base to the back of the detector and which detector is covered by a closure cap. The fin is secured to the shell by a ferrule by causing peripheral portions of the end of the ferrule proximate the central aperture of the fin through which the ferrule is inserted to be forced to be indented to cause metal from such peripheral portions to flow radially over portions of the fin.

REFERENCES:
patent: 1174149 (1916-03-01), Himmer
patent: 2389429 (1945-11-01), Griffith
patent: 2510756 (1950-06-01), Reger
patent: 2779998 (1957-02-01), Bailey
patent: 3271547 (1966-09-01), Seeley
patent: 3717860 (1973-02-01), Tipton et al.
patent: 3827012 (1974-07-01), Duggan
patent: 4116357 (1978-09-01), Stanley, Jr.

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