Fire extinguishers – Sprinkler heads – Collapsible strut
Patent
1992-03-26
1993-08-10
Mitchell, David M.
Fire extinguishers
Sprinkler heads
Collapsible strut
137 72, 137 79, 169 37, 169 40, A62C 3708, A62C 3710, A62C 3711, A62C 3714
Patent
active
052340597
ABSTRACT:
A quick response frangible bulb sprinkler head includes a tubular body connected to a water line. The body has an outlet that is enclosed by a cap or closure, which is held in the closed position by a lever assembly. The lever assembly includes a pair of lever arms which are disposed in an X-configuration, with one end of each arm engaged with the body and the opposite ends of the lever arms are spaced apart and engaged with the opposite ends of an elongated glass bulb. The axis of the bulb is disposed normal to the axis of the outlet in the body. A screw is threaded in the closure and the tip is engaged with a channel-shaped pressure member that is connected to the central portions of the lever arms. Through adjustment of the screw, the compressive force on the bulb can be varied.
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patent: 4015665 (1977-04-01), Simons et al.
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patent: 5072792 (1991-12-01), Simons et al.
patent: 5083616 (1992-01-01), Polan
Kannofsky James M.
Mitchell David M.
Star Sprinkler Corporation
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