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:
Apr. 03, 1997
Applicant:
Inventor:
Douglas H Powell, El Macero, CA (US);
Assignee:
Hunter Innovations, Sacramento, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251 611 ; 251331 ;
Abstract
A combination diaphragm and seal device for valves which replaces a conventional bolt down diaphragm, and which permits automatic control valves and other valves to be closured by an industry standard groove coupler rather than a plurality of bolts through an external flange on the valve body. The diaphragm portion has a flat circular section with a central bore. This portion may be reinforced by a fabric layer and may or may not include a convolute for extra flexibility. The diaphragm portion is overlaid within and across the interior diameter of the groove coupler seal portion at about the midpoint thereof.