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. 21, 1986
Filed:
Feb. 19, 1985
Arthur G Ahlstone, Ventura, CA (US);
Shell Offshore Inc., Houston, TX (US);
Abstract
A method and apparatus are described for the installation and removal of a ring gasket from a ring gasket retainer assembly which forms a part of an underwater wellhead connection. A buoyant ring gasket installation tool, tethered to an underwater vehicle, carries the gasket to the wellhead connection. Due to the buoyancy of the installation tool it floats above the underwater vehicle. By proper placement of the tool beneath an opening defined upwardly through the wellhead connection the tool may float the ring gasket upwardly through the opening and position the ring gasket properly with respect to the ring gasket retainer assembly, which may then be actuated to retain the gasket within the underwater wellhead connection.