Mining rock deflector apparatus and method
US10995617B2 · kind B2 · utility
0Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2020 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Aug 31, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D23/0043
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and method for protecting a person servicing a longwall shear such changing bits on a drum, embodiments relating to a base plate to be secured to an underside of a shield canopy and a slide plate movably connected to the underside of the base plate such that the slide plate can advance out from the shield canopy to allow a person to service a longwall shear while being protected by the slide plate from falling rock and other debris, and the slide plate can then retract back under the shield canopy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.