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.

Date of Patent:
Dec. 29, 2020

Filed:

Aug. 18, 2017
Applicant:

Joy Global Underground Mining Llc, Warrendale, PA (US);

Inventors:

Nagy Daher, Punchbowl, AU;

Richard Boyd, Balgownie, AU;

Edward Bagnall, Berrima, AU;

Stuart Reeves, North Wollongong, AU;

Assignee:

Joy Global Underground Mining LLC, Warrendale, PA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C 31/08 (2006.01); E21C 35/20 (2006.01); E21C 27/02 (2006.01); E21C 31/12 (2006.01); E21C 25/06 (2006.01); E21C 25/18 (2006.01); E21C 27/12 (2006.01); E21C 29/22 (2006.01);
U.S. Cl.
CPC ...
E21C 31/08 (2013.01); E21C 27/02 (2013.01); E21C 31/12 (2013.01); E21C 35/20 (2013.01); E21C 25/06 (2013.01); E21C 25/18 (2013.01); E21C 27/124 (2013.01); E21C 29/22 (2013.01);
Abstract

A cutting assembly for a rock excavation machine including a frame. The cutting assembly includes a boom supported on the frame and a cutting device. In some aspects, the boom includes a first portion and a second portion, and the first portion includes a first structure and a second structure slidable relative to the first structure. The second portion includes a first member pivotably coupled to the second structure, and a second member pivotably coupled to the first member. The cutting device is supported on the second member. In some aspects, a material handling device is supported independently of the boom and movable between a retracted position and an extended position independent of the boom.


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