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. 20, 2018
Filed:
Mar. 02, 2017
Weatherford Technology Holdings, Llc, Houston, TX (US);
Federico Amezaga, Cypress, TX (US);
Weatherford Technology Holdings, LLC, Houston, TX (US);
Abstract
A method and apparatus for a drive unit of a top drive system including a first, second, and third drive gears that are operationally coupled; a motor engagable with the first drive gear; a drive stem having a load coupling and engagable with the second drive gear; and a torque shaft having a torque coupling and engagable with the third drive gear. The drive stem cannot engage with the second drive gear when the torque shaft is engaged with the third drive gear. A method of coupling a drive unit to a tool adapter includes engaging a first drive gear with a motor of the drive unit while engaging a second drive gear with a drive stem of the drive unit; coupling a load between the drive stem and a tool stem of the tool adapter; and coupling a torque between a torque shaft of the drive unit and the tool stem.