Yieldable confined core mine roof support
US5308196A · kind A · utility
33Cited by
18References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1993 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D15/483
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A yieldable confined core mine roof support including a container and a filler placed within the container. The container is yieldable and the filler is compressible. The combination of a filler within a container produces a mine roof support which is yieldable under a substantially axial load and which increases in load carrying ability as it yields, impeding any decrease in the distance between a mine roof and a mine floor, minimizing or preventing mine roof collapse and mine floor heave, buckling or punching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.