Fire extinguishers – Sprinkler heads – Collapsible strut
Patent
1988-03-31
1990-06-05
Peters, Jr., Joseph F.
Fire extinguishers
Sprinkler heads
Collapsible strut
169 37, 169 38, 169 40, 403 2, 137 70, A62C 3714
Patent
active
049305786
ABSTRACT:
An automatic sprinkler having a force transmitting mechanism for releasably maintaining a water outlet closed includes a frangible glass bulb having a very quick response characteristic to thermal input. Substantially less than one-half the force transmitted through the force transmitting mechanism is carried by the glass bulb.
REFERENCES:
patent: 1608515 (1926-11-01), Lowe
patent: 2122426 (1938-07-01), Knight
patent: 2125510 (1938-08-01), Lewis
patent: 4619327 (1986-10-01), Pieczykolan
patent: 4739835 (1988-04-01), Polan
Barnett Charles B.
Rabinovich Leonid
Ellis Chris P.
Figgie International Inc.
Peters Jr. Joseph F.
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