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:
Oct. 20, 1992
Filed:
Jul. 01, 1991
Applicant:
Inventor:
Brian A Roth, Houston, TX (US);
Assignee:
Camco International Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166319 ; 166374 ;
Abstract
A shifting tool, operating on a single control line, selectively shifts a sliding sleeve in a well to either an open or closed position. The tool includes two sets of shifting dogs to manipulate a sliding sleeve in either direction. The tool includes locking dogs which insure proper location of the shifting tool as well as removing the load from the supporting coil tubing.