Electromagnetically driven reciprocating pump with fluted piston
US5509792A · kind A · utility
30Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1995 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Feb 27, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0403
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reciprocal type of pump structure wherein a piston has a linear function actuated by a pair of coils energized alternately and includes a plurality of tapered flutes. A check valve in an outlet of the structure which stretches to open said outlet under the impact of expelled fluids and of its own volition retracts to the closed position immediately upon the cessation of fluids being expelled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.