Fire extinguishers – Sprinkler heads
Patent
1982-07-12
1983-11-29
Love, John J.
Fire extinguishers
Sprinkler heads
A62C 3708
Patent
active
044176260
ABSTRACT:
An adjustable pendent sprinkler assembly has a thermally activated sprinkler head with a releasable cap and a tube spaced above the sprinkler head for securing the assembly to a sprinkler system tee. A plug is slidably mounted in the upper end of the tube where it is retained against downward movement by a release mechanism. An outer sleeve is threaded to the tube and fixedly secured to the sprinkler head for raising and lowering the sprinkler head. An inner sleeve is mounted in the tube for axial movement only and is spaced above the sprinkler head with its upper end holding the release mechanism against release. An intermediate sleeve is threaded to the inner sleeve and has its lower end supported end by the releasable cap of the sprinkler head to releasably support the assembled inner and intermediate sleeves which have inner diameters greater than the outer diameter of the plug to provide for passage of the plug therethrough on its release. The intermediate sleeve is connected to the sprinkler head and tube assembly for rotation therewith and relative axial movement with respect thereto. The threaded connections are such that for a given amount of rotation, the intermediate sleeve and the outer sleeve will move the same axial distance.
REFERENCES:
patent: 2180258 (1939-11-01), Rowley
patent: 2850264 (1958-09-01), Grable
patent: 3529671 (1970-09-01), Adams, Jr.
patent: 3584689 (1971-06-01), Willms
patent: 3675952 (1972-07-01), Mears
patent: 3807503 (1974-04-01), Iasillo, Sr.
patent: 4007878 (1977-02-01), Anderson
patent: 4091872 (1978-05-01), Mountford
patent: 4228858 (1980-10-01), Sclafani
Interfit, Inc.
Love John J.
Rastello Jon M.
LandOfFree
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