Spray nozzle for underground roof support
US10024157B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2016 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Dec 2, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D23/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fluid spray for an underground roof support includes a first housing portion, a spray outlet, a second housing portion formed integrally with the first housing portion, and a service port. The first housing portion includes an elongated shaft having a first end, a second end, and a first fluid passage extending between the first end and the second end. The spray outlet is positioned adjacent the second end of the shaft. The second housing portion is positioned adjacent the first end of the shaft. The second housing portion includes at least one port and a second fluid passage between the at least one port and the first fluid passage. The service port is aligned with the first fluid passage, and the service port is selectively opened to provide access to the first fluid passage from the first end of the first housing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.