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.

Date of Patent:
Jun. 17, 2008

Filed:

Feb. 25, 2005
Applicant:

John Malachy Duggan, Ormskirk, GB;

Inventor:

John Malachy Duggan, Ormskirk, GB;

Assignee:

Trelleborg CRP Ltd., Lancashire, GB;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/01 (2006.01);
U.S. Cl.
CPC ...
Abstract

A bend stiffeneris disclosed for preventing excessive bending of an elongate member, e.g. a marine riser, in a region where it enters a tube, e.g. an 'l' or 'J' tube mounted on a hydrocarbon extraction platform. The bend stiffener has an elongate sleevehaving a through-going cavity which receives the elongate member in use. The sleeve is to be mounted by means of (i) a mating partreceived by the tube and (ii) an axial locating arrangement. The axial locating arrangement is designed to permit at least some angular movement. As a result bending moments are borne by the engagement of the mating partwith the tube. The axial locating arrangement does not suffer large bending moments and so problems of fatigue in this area are alleviated.


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