11/2 Piston force pump
US6193476A · kind A · utility
Inventor
Key dates
| Filing date | Sep 13, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Sep 13, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B9/107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A deep well fluid pump which enables the pumping of fluid with much less energy which includes a power column of fluid of sufficient volume, which communicates to the under side of the lifting piston for the column of fluid to be lifted, but is isolated from said fluid to be lifted, to balance the head force of the column of fluid to be lifted, a pump means to increase the head force on the power column of fluid a sufficient amount to overcome the seal friction and pre-load spring down force of the lifting piston, so that it raises the lifting piston and thus discharges a volume of lifted fluid in a surface reservoir, and when the increase force on the power column of fluid is relieved, the pre-load spring forces the lifting piston down to reload.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.