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:
Feb. 23, 1999
Filed:
Aug. 21, 1997
Applicant:
Inventors:
Richard Lloyd Davies, Katy, TX (US);
Lyle David Finn, Sugar Land, TX (US);
Assignee:
Deep Oil Technology, Incorporated, Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
4051951 ; 285216 ; 405202 ; 405224 ;
Abstract
A stress relieving joint for use with riser pipe in floating systems wherein a vessel is subject to variable motion caused by wind, currents, and wave action. The riser pipe has one end connectable to the sea floor and an upper portion adapted to pass through a constraining opening at the bottom of the vessel. A ball joint and socket assembly is removably attached to the keel at the constraint opening. A sleeve is attached at substantially its midpoint in the ball joint. Riser pipe received in the sleeve is provided with wear strips that reduces the rate of reduction in wear surface diameter.