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:
Dec. 15, 1998
Filed:
Dec. 19, 1996
Applicant:
Inventors:
William L Carbaugh, Humble, TX (US);
Sylvester A Joan, Houston, TX (US);
Assignee:
Hydril Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 854 ; 166 843 ; 166 844 ;
Abstract
A rotating blowout preventer is disclosed that provides the rotating spindle assembly with lugs that are moved downwardly through vertical slots in the preventer housing then horizontally into horizontal grooves in the housing to lock the rotating spindle assembly to the housing and that move horizontally out of the horizontal grooves and upwardly through vertical slots to release the rotary spindle assembly from the housing for making a connection or a trip.