Machine for mixing and injecting water and grout into a roof bolt hole
US4497578A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1980 |
| Grant date | Feb 5, 1985 |
| Priority date | — |
| Expiry date | Jul 10, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F35/754251
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus in which grout is extruded from the same chamber in which mixed. Provision is made to clean the system after it has undergone one cycle of mixing and extrusion. The basic components of the apparatus include a mixing chamber with a mixing ram having collapsible mixing fingers. Encircling this mixing ram is an extruding ram with a ram head. The mixing ram is concentric with and extends through a lower extruding ram cylinder with the upper portion of the mixing ram having a mixing head normally seated in the mixing chamber and concentric with the ram head. Provision is made to bring water into the mixing chamber, to insert grout in the same chamber, and to outlet the water and grout from the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.