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:
Dec. 16, 1980
Filed:
Mar. 08, 1979
Don C Arnold, Palatine, IL (US);
Julio D Silletti, Rockford, IL (US);
Richard L Ritzenthaler, Alden, IL (US);
Thomas J Wilcox, East Troy, WI (US);
Elkay Manufacturing Company, Oak Brook, IL (US);
Abstract
A valve assembly for use in building water systems where hot and cold water supply line pressures vary, and having separate valve means for regulating the hot and cold water pressures. Independently mounted pressure equalizing means operated by the supply water pressures are connected to operate each of the valve means responsive to any pressure differential caused by changes in the supply pressures, to change the water pressure regulated by each of the valve means, with the magnitude and sense of the change reducing any such differential to zero and equalizing the pressures. The separate valve means are actuated by diaphragm assemblies forming a pair of movable walls mounted in a cartridge each one separating one water chamber from an associated hydraulic fluid chamber. Each diaphragm movable wall assembly includes a nonperforated diaphragm clamped between elements and held at its periphery in the cartridge to form a movable wall.