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:
Jun. 27, 2000
Filed:
Jan. 25, 1999
Matthew G Beutler, Temecula, CA (US);
Revis R Hunter, Escondido, CA (US);
Hunter Industries, Inc., San Maros, CA (US);
Abstract
A diaphragm valve includes a valve housing, a diaphragm assembly mounted within the valve housing, a pilot valve coupled to the valve housing and a flow control stem mounted in an upper bonnet of the valve housing. The valve housing has an inlet passage and an outlet passage. The diaphragm assembly is vertically reciprocable back and forth within the valve housing to thereby connect and disconnect the inlet passage and the outlet passage. The valve housing has a lower inlet chamber below the diaphragm assembly, an upper pressure control chamber above the diaphragm assembly, and a bore in the bonnet which communicates with the upper pressure control chamber. The pilot valve is operatively associated with the upper pressure control chamber for selectively venting pressurized liquid therefrom. The diaphragm assembly normally seals the inlet passage from the outlet passage and is upwardly moveable to connect the inlet passage with the outlet passage upon release of a sufficient amount of pressurized water from the upper pressure control chamber via the pilot valve. The diaphragm assembly includes a mechanism for metering water from the lower inlet chamber through the diaphragm assembly into the upper pressure control chamber. The flow control stem is vertically reciprocable in the bore of the bonnet for selectively venting air trapped in the upper pressure control chamber.