Sprinkler

Details Sprinkler Sprinkler

1983-07-29

1985-04-16

Kashnikow, Andres

Fire extinguishers

Sprinkler heads

Collapsible strut

A62C 3710

Patent

active

045110034

ABSTRACT:
In an automatic fire sprinkler unit, the valve body is provided with an annular seat, e.g. of brass, against which a sealing disk of harder material, e.g. stainless steel normally is maintained resiliently, sealingly pressed by a compression strut which is interposed between the body and the sealing disk. The strut is intentionally subject to failure upon being heated to a predetermined extent. The unit is provided with a fulcrum which bears against the disk to vary the sealing area as more and less pressure is placed on the disk so that sealing pressure and compressive stress on the strut will be kept to minimum values. The unit is further provided with limit stop surfaces which prevent an overload, such as may result from dropping the unit while installing it, from doing hidden damage to the unit.

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patent: 891279 (1908-06-01), Martin
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patent: 3575377 (1971-04-01), Carlton et al.
patent: 4088301 (1978-05-01), Ehmig
patent: 4167974 (1979-09-01), Job
patent: 4204662 (1980-05-01), Reynolds

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