Rock cutting assembly
US11319754B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Jul 25, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cutting assembly is provided for a rock excavation machine having a frame. The cutting assembly includes a boom, a cutting device, and a plurality of fluid actuators. The boom includes a base portion and a movable portion. The base portion is configured to be supported by the frame, and the movable portion is supported for sliding movement relative to the base portion in a direction parallel to a longitudinal axis of the base portion. The boom includes a wrist portion pivotably coupled to the movable portion at a pivot joint. The cutting device is supported on a distal end of the wrist portion. The fluid actuators are coupled between the base portion and the wrist portion. The fluid actuators are operable to move the movable portion and the wrist portion parallel to the longitudinal axis, and are also operable to bias the wrist portion against cutting loads exerted on the cutting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.