Constant volume seal-free reciprocating pump
US4102610A · kind A · utility
41Cited by
8References
1Claims
0Family size
Inventors
Key dates
| Filing date | Sep 3, 1976 |
| Grant date | Jul 25, 1978 |
| Priority date | — |
| Expiry date | Sep 3, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reciprocating pump having a piston completely enclosed by and moving within a cylinder. The pumping action is provided by the interaction between a magnetic component embedded in the piston and an external varying magnetic field produced by a permanent magnet, solenoid, etc. The necessary back-and-forth motion is produced by momentarily offsetting the gravitational force by the spatial driving or time variation of the magnetic field and a suitable combination of valves is provided to control the fluid flow through the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.