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:
Nov. 23, 1993
Filed:
Apr. 20, 1993
Applicant:
Inventor:
Kim C Reeves, Lexington, TN (US);
Assignee:
Delavan Inc, West Des Moines, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
13762533 ; 1376255 ; 25112907 ; 251357 ;
Abstract
A control valve assembly designed to allow operation with minimum power requirements and a rapid response to a 'shut off' command. The assembly includes a pair of seal elements which operate in tandem. When the valve is open, fluid passes through a series of chambers and as the valve is closed, a substantial passageway allows fluid to bleed quickly to the outlet and reduce pressure to zero almost instantly, thus achieving almost instant shutoff. The dual seal arrangement is also designed so that internal fluid forces are nearly balanced so that minimal external power is required for proper operation.