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:
Nov. 10, 2015
Filed:
Apr. 19, 2011
Applicants:
Steven Hafernik, Houston, TX (US);
Fife Ellis, Houston, TX (US);
Inventors:
Steven Hafernik, Houston, TX (US);
Fife Ellis, Houston, TX (US);
Assignee:
Dril-Quip, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/01 (2006.01); E21B 19/00 (2006.01); B63B 35/44 (2006.01);
U.S. Cl.
CPC ...
E21B 19/006 (2013.01); B63B 35/4413 (2013.01); E21B 17/012 (2013.01); E21B 19/002 (2013.01); B63B 2035/448 (2013.01);
Abstract
The riser tensioning system () includes a tensioning ring () for secured engagement with the riser and plurality of hydraulic cylinders () extending between the tensioning ring and a floating platform. A gimbal mechanism () acts between the platform and the riser to allow the riser axis to tilt relative to the floating platform. One or more elongate torque transfer members () extend between the tensioning ring and the gimbal mechanism and allow axial movement of the tensioning ring and the riser with respect to the floating platform.