Patent ID: 11939868
Assignee: JOY GLOBAL UNDERGROUND MINING LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
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.