Well pump
US4820137A · kind A · utility
1Cited by
7References
5Claims
0Family size
Inventor
Key dates
| Filing date | Aug 10, 1987 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Aug 10, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7918
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A submersible well pump of the barrel and piston type characterized by a valve chamber formed coextensively with the barrel and containing an inlet valve and an outlet valves arranged to admit fluid to one end of the barrel on a first stroke of an unported piston and to discharge the fluid from the same end of the barrel on a second opposite stroke of the piston. A double acting version of the pump is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.