Shuttle valve for concrete pump
US6443718B1 · kind B1 · utility
4Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S417/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A shuttle valve for use in a pumping apparatus for pumping concrete or the like. The valve uses belleville springs to hold a wear ring against the concrete hopper, thereby creating a seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.