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:
May. 15, 2007
Filed:
Jun. 10, 2002
George Swietlik, Lowestoft, GB;
Joseph Fitzgerald, Lowestoft, GB;
George Swietlik, Lowestoft, GB;
Joseph Fitzgerald, Lowestoft, GB;
Pilot Drilling Control Limited, Lowestoft, GB;
Abstract
A downhole tool comprises a joint, and a resilient memberwhich extends through the joint and provides a restoring force which tends to strengthen the joint. The joint may comprise a flex couplingwhich allows limited articulation of the joint. First and second drill string sectionsmay be interconnected by the joint, the resilient memberbeing fixed to interior surfaces of the first and second drill string sectionsA downhole tool may also comprise primary and secondary sleevesthat are supported relative to the mandrelof the drill string. Rotational drive may be transferred from one of the sleeves to the other.