Monocoil reciprocating permanent magnet electric machine with self-centering force
US4827163A · kind A · utility
54Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1986 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Mar 4, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear reciprocating machine has a tubular outer stator housing a coil, a plunger and an inner stator. The plunger has four axially spaced rings of radially magnetized permanent magnets which cooperate two at a time with the stator to complete first or second opposite magnetic paths. The four rings of magnets and the stators are arranged so that the stroke of the plunger is independent of the axial length of the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.