Sucker rod pump
US5108272A · kind A · utility
8Cited by
7References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 27, 1991 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Feb 27, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A subsurface well pump is provided which is resistant to vapor locking. The pump is a reciprocating sucker rod pump which has a top inlet valve, and a means to vent vapors from the barrel of the pump on each stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.