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:
Mar. 10, 1992
Filed:
Dec. 12, 1989
George S Polan, Harleysville, PA (US);
Central Sprinkler Corporation, Lansdale, PA (US);
Abstract
A fire sprinkler apparatus comprises a tubular body, a valve and a locking mechanism, the tubular body having a longitudinal axis and a conduit extending therethrough and being connectable to a supply of pressurized fire extinguishing fluid. The conduit has an annular groove proximate the outlet end of the tubular body, the valve forming a fluid-tight seal proximate the outlet end in a closed position and being completely separable from the fire sprinkler apparatus. The locking mechanism being supported by the tubular body for limited movement between an engaged position and a disengaged position, the locking mechanism comprising a housing, a plurality of locking balls moveable toward and away from the annular groove, a locking disc and temperature responsive means.