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:
Oct. 01, 2019
Filed:
Aug. 19, 2016
Weatherford Technology Holdings, Llc, Houston, TX (US);
Frank Wern, Hannover, DE;
Bjoern Thiemann, Burgwedel, DE;
Aicam Zouhair, Houston, TX (US);
Martin Liess, Seelze, DE;
Christina Karin Hebebrand, Hannover, DE;
WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US);
Abstract
A top drive system for use with a tool for handling tubulars on a drilling rig includes a motor unit; a coupling unit that transfers torque to the tool; a torque measurement device (TMD) coupled to at least one of the motor unit, the tool, or the coupling unit, wherein the TMD includes a sensing member coupled to an evaluation unit, wherein the sensing member is configured to measure a magnetostrictive effect and the evaluation unit is configured to calculate a magnitude of the torque reaction force based on the magnetostrictive effect.