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. 04, 1997
Filed:
Apr. 28, 1995
John Edwin Halkyard, Poway, CA (US);
Deep Oil Technology, Inc., Irvine, CA (US);
Abstract
A stress relieving joint for pipe such as risers, tendons, and the like used in floating vessel systems wherein a vessel is subject to heave, pitch, and roll motion caused by wind, currents, and wave action; the pipe passing through a constraint opening in the vessel and connected to the sea floor and subject to bending or rotation at the constraint opening. The joint comprises a sleeve member of selected length with ends at opposite sides of the constraint opening and centralizing annuli or rings at sleeve member ends for providing spaced contact points or areas to distribute bending stresses imparted to the sleeve member at the constraint opening to the pipe at the sleeve member ends. A method of relieving or distributing stress in a pipe at a constraint location.