Method for removing material from a rock wall
US11725512B2 · kind B2 · utility
0Cited by
94References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2022 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | May 16, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/102
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for removing material from a rock wall. The method includes moving a cutting edge through the rock wall to create a first slot in the rock wall, moving the cutting edge through the rock wall to create a second slot in the rock wall, the second slot being separated from the first slot by an uncut portion, the uncut portion defining a base surface attached to the wall, cutting a notch into the base surface of the uncut portion, and applying a force on the uncut portion to break the uncut portion away from the wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.