Water well pump cylinder components
US5618169A · kind A · utility
12Cited by
10References
8Claims
0Family size
Inventor
Key dates
| Filing date | Mar 11, 1996 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Mar 11, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/143
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Water well pump plunger efficiency is improved by providing a pair of upwardly open outwardly flared wall cups surrounding a pump plunger and supported in superposed relation by a sleeve in the lowermost cup. A fluid passageway through the base of the uppermost cup insures filling the lowermost cup on the plunger upstroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.