Electromagnetic vibratory exciter
US4701647A · kind A · utility
3Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1986 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Oct 20, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An elastomeric compression element for an electromagnetic exciter unit which has a generally semi-circular outer periphery, an elongate inner periphery, end portions merging the inner and outer peripheries, a planar base surface and a contoured contact surface. The central portion of the element is dimensioned to have a height and thickness greater than that at the end portions for providing a non-linear spring action with the reciprocating free mass inside the unit during electromagnetic conduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.