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:
Nov. 12, 2013
Filed:
Mar. 24, 2011
Peter Allen, Ulverston, GB;
Nigel John Dennis Kilshaw, Kendal, GB;
Walter Edward Somerville Davey, Histon, GB;
Jonathan Charles Long, Ulverston, GB;
Donald Ian Carruthers, Kirkby in Furness, GB;
Peter Allen, Ulverston, GB;
Nigel John Dennis Kilshaw, Kendal, GB;
Walter Edward Somerville Davey, Histon, GB;
Jonathan Charles Long, Ulverston, GB;
Donald Ian Carruthers, Kirkby in Furness, GB;
Gyrodata, Incorporated, Houston, TX (US);
Abstract
In certain embodiments, a steerable drilling tool is provided including a rotatable shaft extending through a housing where the shaft and the housing are separated by at least one bearing or two sets of bearings, the shaft having a first portion terminating at a first end of the shaft and a second portion terminating at a second end of the shaft. The steerable drilling tool may further include a drill bit structure operatively coupled to the first portion and a steering subsystem comprising a pair of bearings operatively coupled to the first portion. The steering subsystem may be configured to angulate the shaft by exerting force substantially through the pair of bearings. In certain embodiments, the first portion is between the first end and about one-third of the length of the shaft from the first end towards the second end.