The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1987
Filed:
Jun. 05, 1985
Mitsuo Zen, Soka, JP;
Senju Metal Industry Co., Ltd., Tokyo, JP;
Abstract
There is provided a flush type sprinkler head to be installed in the ceiling of a building, the sprinkler protruding out of the ceiling by a small distance. The sprinkler head comprises a main body defining a nozzle having a valve seat at the lower end, a cylindrical frame having a radially inwardly extending flange at the lower end, a valve member normally abutting against the valve seat to close the nozzle, a slidable deflector assembly fitting on the valve member and including a guide ring having slide bars extending downwardly from the guide ring and a deflector slidable along the slide bars, a coil spring interposed between the main body and guide ring and a break-up closure assembly adapted to break into pieces at rise in the temperature at the installation area of the sprinkler head and including a thermally responsive element.