Mine roof bolt with resin control surface
US7566189B2 · kind B2 · utility
6Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | May 9, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D21/004
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A resin bonded mine roof bolt having an elongated rod with a first end, a second end, and a resin control surface positioned on the rod between the rod first and second ends. The resin control surface has a channel extending along the length of the bolt for distributing resin and interrupted spiral threads for mixing resin. When installed in a mine roof bore hole with curable resin, the resin control surface mixes the resin and partially fills the bore hole to minimize the amount of resin needed to anchor the bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.