Electromagnetic coupling
US4793455A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 31, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Jul 31, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2027/008
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electromagnetic coupling selectively transmits power from an automobile engine to a supercharger. The electromagnetic coupling includes a rotor having excitation coils thereon and rotatable by the drive source, an armature magnetically attractable in a direction toward the rotor for rotation therewith in response to energization of the excitation coils, an outer holder plate mounted on the armature and having a first flange, an inner holder plate connected to the supercharger and disposed radially inwardly of the outer holder plate, the inner holder plate having a second flange positioned concentrically with and spaced from the first flange, and an elastomeric member disposed between and joined to the first and second flanges. The elastomeric member has a thickness in the direction toward the rotor which is progressively increased from the second flange toward the first flange. The elastomeric member has a surface remote from the armature, the surface and the first flange of the outer holder plate forming an obtuse angle before the armature is magnetically attracted to the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.