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:
Jul. 29, 1986
Filed:
Feb. 19, 1985
Applicant:
Inventors:
Tun C Gist, Jennings, LA (US);
Arthur G Ahlstone, Ventura, CA (US);
Assignee:
Shell Offshore Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63C / ;
U.S. Cl.
CPC ...
405185 ; 405191 ; 166338 ; 166340 ; 29235 ; 29451 ;
Abstract
A method and apparatus are described for the installation and removal of a ring gasket from an underwater wellhead connection. The ring gasket is carried by a ring gasket installation tool from the surface to the underwater wellhead connection by a self-propelled underwater vehicle. Final placement of the ring gasket may be accomplished by selective manipulation of the ring gasket installation tool by the underwater vehicle or by a cable attached to the tool.