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. 10, 1977
Filed:
Apr. 13, 1976
Applicant:
Inventor:
Michael Derek Pennock, Pinner, EN;
Assignee:
The British Petroleum Company Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166315 ; 166250 ; 166- 5 ;
Abstract
An apparatus for installation in a drill string to orientate equipment in or below an underwater blow out preventer has an elongate member to be corrected in the drill string and having thereon a second member moveable axially with respect thereto but having means to prevent relative rotation, the second member having a surface adapted for engagement with the rams of the blow out preventer.