Small dynamoelectric machine and method for making same
US4321748A · kind A · utility
8Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1980 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Jan 18, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In assembling a rotor into a small electric rotary machine, a spacer made of resinous material is provided to have an ideal axial play for the rotor. When the rotor is assembled into a housing, the resinous spacer is made to be soft enough to allow encroachment of the rotor shaft end until the rotor is placed in the right place. Thereafter, the spacer is made hard enough to support the axial movement of the rotor when the motor operates. Since the resinous spacer shrinks after hardening it provides an ideal axial play for the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.