Fire extinguishers – Sprinkler heads – Collapsible strut
Patent
1976-09-13
1984-04-03
Mitchell, David M.
Fire extinguishers
Sprinkler heads
Collapsible strut
A62C 3708
Patent
active
044402341
ABSTRACT:
A sprinkler has a frame and a cap closing a fluid discharge orifice at one end of the frame. A lever member is pivoted at one end portion on a compression screw which extends from a frame portion generally opposite the cap. The lever member curves from its one end portion to a portion generally parallel to a strut member which extends from the cap to the pivoted end portion of the lever. A pair of arms extend from one member and straddle the other. One arm has a socket for receiving a ball on one end of a tubular retainer and the other arm has a boss engaging a dimple on the other end of the retainer. A side of the retainer engages the arm-straddled member to hold the members in place until heat as from a fire melts a fusible element in the retainer to permit the ball to retract into the retainer. The retainer then pivots about the boss to release the strut from the cap for discharging fluid from the orifice.
REFERENCES:
patent: 551162 (1895-12-01), Hill
patent: 1231439 (1917-06-01), Simonds et al.
patent: 1379195 (1921-05-01), Lewis
patent: 1919508 (1933-07-01), Griffith
patent: 2165477 (1939-07-01), Griffith
patent: 2502754 (1950-04-01), Rowley
patent: 2664956 (1954-01-01), Barz
patent: 3469632 (1969-09-01), Ault
patent: 3625289 (1971-12-01), Gloeckler
Mar Michael
Mitchell David M.
The Reliable Automatic Sprinkler Company, Inc.
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