Ripple-shaped tightening strip for retaining electric machine winding
US4117362A · kind A · utility
5Cited by
11References
7Claims
0Family size
Inventors
Key dates
| Filing date | Apr 19, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Apr 19, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/487
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ripple-shaped tightening strip disposed in radial slots of the core of an electric machine stator between the slot wedge and winding bar and comprising a rippled insulating member and an elastomeric resilient member fixed in the troughs of the rippled member. Such a strip has an increased strength, provides for a considerable total radial force provides for a sufficient take-up of the clearance between the slot wedge and the winding bar to compensate for its variations in a radial direction, caused by heat and electromagnetic forces when the electric machine is in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.