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:
May. 06, 1980
Filed:
Jul. 27, 1978
Applicant:
Inventor:
Donald F Taylor, Dallas, TX (US);
Assignee:
Otis Engineering Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251175 ; 166332 ;
Abstract
Disclosed is a valve to control fluid flow between a region exterior of a tubular member and a region interior of the tubular member. The valve includes a tubular seal element which is radially expandable to prevent flow and is radially contractible upon sliding movement thereof to permit flow and to reduce frictional resistance to such sliding movement.