Fire-sprinkler cut-off device

Details Fire-sprinkler cut-off device Fire-sprinkler cut-off device

1986-01-31

1987-01-27

Peters, Jr., Joseph F.

Fire extinguishers

Sprinkler heads

Shut off valve

169 38, A62C 3900

Patent

active

046388664

ABSTRACT:
An apparatus for stopping the flow of water through the opening in a fire sprinkler head after the failure of an originally installed triggering device, which apparatus thereafter serves as a substitute triggering device. The apparatus is provided with a meltable body portion having a first bore formed therein with a shoulder formed at one end of the first bore and a second bore formed generally transverse to and in contact with the first bore at the shoulder end of the first bore, a spring positioned in the first bore, a piston positioned within the spring and having a slot at one end which is alignable with the second bore and a pin inserted through the second bore and engaging the piston slot. Thus, after placement in a sprinkler head, transverse movement of the pin results in the release of the piston which is moved by the spring into the sprinkler head opening, stopping the flow of water.

REFERENCES:
patent: 615270 (1898-12-01), Grew
patent: 2520588 (1950-08-01), Wells et al.
patent: 3223171 (1965-12-01), De Groot et al.
patent: 4139062 (1979-02-01), Rago

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