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:
May. 26, 2020
Filed:
Sep. 22, 2017
Applicant:
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Inventors:
Andrew Wurster, New Berlin, WI (US);
Samuel Haworth, Oak Creek, WI (US);
Russ Cascio, Glendale, WI (US);
Tim Bachinski, Cudahy, WI (US);
Assignee:
Joy Global Surface Mining Inc, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 15/04 (2006.01); E21B 19/14 (2006.01); E21B 17/046 (2006.01); E21B 7/04 (2006.01); E21B 4/00 (2006.01); E21B 19/083 (2006.01); E21B 7/02 (2006.01);
U.S. Cl.
CPC ...
E21B 15/04 (2013.01); E21B 4/006 (2013.01); E21B 7/02 (2013.01); E21B 7/04 (2013.01); E21B 17/046 (2013.01); E21B 19/083 (2013.01); E21B 19/14 (2013.01);
Abstract
A mast and rack assembly for a mining machine includes a mast and a rack assembly coupled to the mast. The rack assembly includes outer rails and rack segments disposed between the outer rails and the mast. At least one of the outer rails overlaps two of the rack segments.