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. 29, 1983
Filed:
Dec. 21, 1981
Applicant:
Inventor:
Gary A Kohn, Dallas, TX (US);
Assignee:
Otis Engineering Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
137553 ; 251231 ; 251292 ; 166334 ; 175218 ;
Abstract
A manually operated valve. The valve has a housing with a uniform outside diameter compatible with the outside diameter of flow conductors attached to the valve. An operating sleeve is movable longitudinally within the housing by engagement with a shifting tool from the exterior of the housing. The operating sleeve shifts the valve between its open and closed positions. A detent spring is provided to give an indication when the shifting tool has moved the operating sleeve sufficient to fully open or close the valve. The valve is particularly adapted for using in a drill string or workover string in an oil or gas well.