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:
Dec. 05, 2017
Filed:
Apr. 19, 2012
Applicant:
Neil Andrew Abercrombie Simpson, Aberdeen, GB;
Inventor:
Neil Andrew Abercrombie Simpson, Aberdeen, GB;
Assignee:
Paradigm Drilling Services Limited, Scotland, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/04 (2006.01); E21B 17/10 (2006.01); E21B 23/00 (2006.01);
U.S. Cl.
CPC ...
E21B 7/04 (2013.01); E21B 17/1057 (2013.01); E21B 2023/008 (2013.01);
Abstract
An apparatus () includes a traction member in the form of a roller () configured for mounting on a body () so as to permit rotation of the roller () relative to the body (). The roller () is mountable on the body () so as to define a skew angle relative to a longitudinal axis () of the body (). In use, the roller () engages a wall of a borehole or bore-lining tubular and the roller () urges the apparatus () along the wall of the borehole or bore-lining tubular on rotation of the as the roller () rotates on the body ().