Apparatus for and a method of transferring liquid
US4741673A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1987 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Jul 20, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B9/107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for transferring liquid between regions of a first and a second pressure comprising: PA0 a vessel, PA0 a dividing member in the vessel, the vessel and the dividing member being relatively movable to divide the vessel into separate variable volume chambers, PA0 a first pair of valves, PA0 one of which controls passage of liquid between a first of said chambers and said region of a first pressure, PA0 the other of which controls passage of liquid between a second of said chambers and said region of a first pressure, PA0 a second pair of valves, one of which controls passage of liquid between said first chamber and said region of a second pressure, PA0 the other of which controls passage of liquid between said second chamber and said region of a second pressure, PA0 operating means repeatedly to perform the following cycle of operations; PA0 close the valves of one of said pairs and open the valves of the other of said pairs, PA0 then move the dividing member to cause the volume of said first chamber to increase and the volume of said second chamber to decrease, PA0 then close the valves of the other of said pairs and open the valves of said one pair, and PA0 then move th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.