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:
Aug. 06, 2013
Filed:
Oct. 15, 2007
David Michael Ruthven Somerville, Wigan, GB;
Nicholas W. Byrne, Manchester, GB;
David Michael Ruthven Somerville, Wigan, GB;
Nicholas W. Byrne, Manchester, GB;
Trelleborg CRP Limited, Skelmersdale, Lancashire, GB;
Abstract
A device and method are disclosed for suppressing vortex induced vibration of a submerged elongate member such as a marine riser. Also disclosed is a marine riser having VTV suppression features. The VIV suppression features comprise multiple circumferential de-correlation rings at intervals along the member's length, each ring comprising multiple vortex tripping features at intervals around the member. The ring may for example take the form of a clamp () used to locate fairing units (). However it may alternatively be a loose ring mounted on the member, or may comprise discrete features at intervals around the circumference of the member. By reducing correlation between shed vortices at different locations on the pipe, embodiments of the invention serve to prevent or reduce the coherent action of shed vortices which lead to VIV.