Armature rotors of electromagnetic retarders
US4853574A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1989 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Feb 7, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D65/128
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides an armature rotor for electromagnetic retarder, comprising at least one disc (2) extended axially on one of its faces by a plurality of fins (9), each fin being defined by two parallel or substantially parallel faces slanted with respect to the corresponding radii, the tips of the fins being connected together by an annular flange (11) and the assembly formed by the disc, the fins and the flange being made as a single moulded block from ferromagnetic material. The fins (9) of said rotor are particularly thin, numerous and so close together, the thickness of each fin being less than 5 mm and the width of the gap between two consecutive fins, in its narrowest zone, considered perpendicularly to the facing faces of the fins, being less than 10 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.