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:
Feb. 15, 1994
Filed:
Mar. 22, 1993
Applicant:
Inventor:
George N Proper, Milpitas, CA (US);
Assignee:
General Valve Corporation, Fairfield, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137-1 ; 137903 ; 251321 ; 251902 ;
Abstract
A stretch valve which achieves precise control of fluid flow rates through the use of a cylindrical elastomeric valve element. This elastomer element is installed within the cylindrical flow path of a valve body. The flow path has a diameter that is slightly smaller than that of the elastomer element, which is therefore constrained within the flow path. Longitudinal stretching of the elastomer element causes the diameter of the elastomer element to decrease. As a result, a flow path is opened. The further the elastomer element is stretched, the larger is the fluid path that is created. Therefore, precise control of the fluid flow rate is made possible.