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. 25, 2009
Filed:
Jun. 08, 2006
Neil Andrew Abercrombie Simpson, Aberdeen, GB;
Simon John Harrall, Inverurie, GB;
Paul David Metcalfe, Petercutter, GB;
Neil James Glover, Aberdeen, GB;
David Stephenson, Dubai, AE;
Andrew Michael Duggan, Aberdeen, GB;
Neil Andrew Abercrombie Simpson, Aberdeen, GB;
Simon John Harrall, Inverurie, GB;
Paul David Metcalfe, Petercutter, GB;
Neil James Glover, Aberdeen, GB;
David Stephenson, Dubai, AE;
Andrew Michael Duggan, Aberdeen, GB;
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
An expandable coupling arrangement for coupling first and second tubulars includes a male thread portion on an end of the first tubular and a female thread portion on an end of the second tubular. The thread portions comprise dovetail threads having flanks, roots and crests, wherein the flanks are inclined at an angle of greater than 10°.