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:
Dec. 25, 1984
Filed:
Sep. 13, 1982
Applicant:
Inventors:
Michael D West, Arlington Heights, IL (US);
Robert H Dean, Evanston, IL (US);
Assignee:
International Telephone and Telegraph Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251161 ; 251164 ; 251188 ; 251192 ;
Abstract
A rotary plug valve includes a rotary plug which has a relatively thin-walled valving portion. To lock the valve in position or to achieve leak tight closure of the valve, the rotary plug is subjected to pressure such that the wall of the thin-walled valving portion deflects outward to tightly contact the surrounding wall of the plug receiving cavity in the valve housing.