Long throw shotcrete nozzle
US7854397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2006 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Mar 3, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G2021/049
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved apparatus for the gunning of a material is provided having a nozzle with an inner passage defined by an inner tubular member having an inlet end into which a wetted material is to be introduced and an outlet end from which the material is to be sprayed. An outer tubular member is disposed around the inner tubular member defining an outer passage between the inner and outer tubular members. A compressed gas is passed through the outer passage and impinged on the wetted material exiting the inner passage to better control the spray pattern of the wetted material. The inner tubular member extends out beyond the outlet end of the outer tubular member and the inner surface of the outer tubular member and the outer surface of the inner tubular member near the outlet end are chamfered to provide an optimal attitude for the impinging air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.