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. 02, 1978
Filed:
Mar. 04, 1977
Applicant:
Inventors:
George M Raulins, Dallas, TX (US);
Fleming A Waters, Dallas, TX (US);
Assignee:
Otis Engineering Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16k / ;
U.S. Cl.
CPC ...
137522 ; 166321 ; 251 636 ;
Abstract
A remote-controlled tubing safety valve having a check valve and a remotely controlled valve member operator movable between two positions. When the valve member operator is in a first position the check valve is maintained open. When the valve member operator is in a second position it does not interfere with the operation of the check valve. This abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.