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:
Apr. 24, 2018
Filed:
Feb. 25, 2016
Applicant:
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Inventor:
Bernard W. Pusheck, Cudahy, WI (US);
Assignee:
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 19/04 (2006.01); F16H 19/08 (2006.01); E21B 19/083 (2006.01); F16H 57/12 (2006.01);
U.S. Cl.
CPC ...
E21B 19/083 (2013.01); F16H 2057/126 (2013.01);
Abstract
A drill rig includes a base, a drill tower extending from the base, a drill pipe coupled to and supported by the drill tower, and a driving mechanism coupled to the drill tower that moves the drill pipe relative to the drill tower. The driving mechanism includes a rack and a plurality of pinions that engage the rack. The drill rig also includes an adjustment mechanism coupled to the driving mechanism, the adjustment mechanism including a plurality of rollers and an adjustment component that moves the plurality of rollers simultaneously toward the pinions to contact the rack.