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. 17, 1990
Filed:
Aug. 08, 1989
Oliver L Danko, Chesterland, OH (US);
Nupro Company, Willoughby, OH (US);
Abstract
A diaphragm valve includes a valve body adapted to receive a replaceable diaphragm subassembly. The subassembly includes a sleeve closely received in the valve body. An actuating stem extends through the sleeve and includes a composite diaphragm welded at one end. An intermediate portion of the stem is threadedly received in a closure ring. The closure ring defines a radial gap with a closing cap to permit adjustment of the stem relative to a valve seat. A peripheral portion of the composite diaphragm is clampingly engaged between the valve body and sleeve. The composite diaphragm includes a metal layer having an elastomer bonded to one face to provide superior sealing and strength properties.