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:
Jun. 17, 2008
Filed:
Jul. 01, 2002
Simon Benedict Fraser, Torphins, GB;
William Brown-kerr, Aboyne, GB;
John Knight, Banchory, GB;
Abstract
There is disclosed an electrically insulating device in the form of a sleeve () for a downhole tool, for electrically insulating a first threaded electrically conductive member in the form of an anchor sub () from a second threaded electrically conductive member in the form of an insulated sub (). An assembly () including the sleeve () has particular use in measurement while drilling (MWD)/logging while drilling (LWD) procedures. In one embodiment, a third member in the form of a threaded electrically conductive sleeve sub () is coupled to the insulated sub by a second sleeve (), to create an insulated gap between the anchor and sleeve subs ().