Concrete pump
US4303378A · kind A · utility
3Cited by
12References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1979 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Jun 25, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86839
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid operated pump for concrete and similar materials comprising a pair of piston-cylinder units connected to a concrete housing having a single valve for controlling the charging and discharging of the material. The valve control element and the concrete housing are defined in a mating relationship for minimizing flow restrictions of the material moved through the housing. Other efficiencies in the fluid circuit structures and arrangements are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.