Concrete pump valve
US3934813A · kind A · utility
1Cited by
13References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 1973 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | May 14, 1993 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B7/0266
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve for a concrete pump having a front valve closing portion which in the closed position prevents flow through a T-pipe section, a supporting structure secured to the T-pipe section and an annular sealing band carried by the supporting structure and positioned about the valve closing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.