US 11,939,868 B2
Cutting device and support for same
Nagy Daher, Punchbowl (AU); Richard Boyd, Balgownie (AU); and Joaquim Antonio Soares de Sousa, Alberton (ZA)
Assigned to JOY GLOBAL UNDERGROUND MINING LLC, Warrendale, PA (US)
Filed by Joy Global Underground Mining LLC, Warrendale, PA (US)
Filed on Mar. 24, 2023, as Appl. No. 18/189,511.
Application 18/189,511 is a continuation of application No. 16/932,353, filed on Jul. 17, 2020, granted, now 11,613,993.
Application 16/932,353 is a continuation of application No. 15/680,765, filed on Aug. 18, 2017, granted, now 10,738,608, issued on Aug. 11, 2020.
Claims priority of provisional application 62/398,834, filed on Sep. 23, 2016.
Claims priority of provisional application 62/398,717, filed on Sep. 23, 2016.
Claims priority of provisional application 62/377,150, filed on Aug. 19, 2016.
Prior Publication US 2023/0228192 A1, Jul. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21C 27/22 (2006.01); E21C 25/16 (2006.01); E21C 25/18 (2006.01); E21C 27/02 (2006.01); E21C 35/20 (2006.01); E21D 9/10 (2006.01)
CPC E21C 27/22 (2013.01) [E21C 25/16 (2013.01); E21C 25/18 (2013.01); E21C 27/02 (2013.01); E21C 35/20 (2013.01); E21D 9/1006 (2013.01); E21D 9/102 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A cutting assembly for a rock excavation machine including a frame, the cutting assembly comprising:
a boom including a first structure, a second structure, and a wrist portion, the first structure configured to be supported by the frame and extending along a longitudinal base axis, the second structure coupled to the first structure and pivotable relative to the first structure, the wrist portion pivotably coupled to the second structure by a universal joint;
at least one biasing member coupled between the second structure and the wrist portion, the at least one biasing member biasing the wrist portion relative to the first structure; and
a cutting device supported by the wrist portion of the boom.
 
10. A cutting assembly for a rock excavation machine including a frame, the cutting assembly comprising:
a boom including a slew coupling, a first structure, a second structure, and a wrist portion, the slew coupling configured to move the boom about a slew axis, the first structure coupled to the frame by the slew coupling and extending along a longitudinal base axis, the first structure pivotable relative to the slew coupling about a first axis, the second structure supported for pivotable movement relative to the first structure about a second axis, the wrist portion pivotably coupled to the second structure by a universal joint;
at least one biasing member coupled between one of the first structure and the second structure and the wrist portion, the at least one biasing member biasing the wrist portion relative to the first structure; and
a cutting device supported by the wrist portion of the boom.
 
19. A cutting assembly for a rock excavation machine, the rock excavation machine including a frame, the cutting assembly comprising:
a boom including a first portion and a second portion, the first portion supported for pivotable movement relative to the frame, the first portion including a first structure extending along a longitudinal base axis and a second structure moveable relative to the first structure, the second portion pivotably coupled to the first portion by a universal joint;
a suspension system including a plurality of biasing members coupled between the first portion and the second portion and biasing the second portion relative to the first portion, the biasing members being oriented parallel to one another; and
a cutting device supported by the second portion of the boom.