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. 10, 2014
Filed:
Apr. 15, 2011
John J. Eglin, Polk, OH (US);
Neil M. Baker, Gambler, OH (US);
John J. Eglin, Polk, OH (US);
Neil M. Baker, Gambler, OH (US);
Astec Industries, Inc., Chattanooga, TN (US);
Abstract
A wrench assembly is mounted on a drill rig so as to have some freedom of movement in three axes. The wrench assembly includes a wrench subassembly having an upper wrench and a lower wrench. Both the upper wrench and the lower wrench are provided with jaw assemblies that are adapted to grip a pipe section or to release it. One of the upper wrench and lower wrench is pivotally moveable with respect to the other to apply a twisting force to a pipe section gripped by one of the upper and lower wrenches with respect to an adjacent pipe section gripped by the other of the upper and lower wrenches. The wrench assembly also includes a generally planar support table. The wrench subassembly is attached to the support table in such a manner as to allow the wrench subassembly to pivot about an axis that is perpendicular to the plane of the support table, and in such a manner as to allow the wrench subassembly to tilt with respect to the plane of the support table.