Assembling electric motors with reduced end-play
US5051632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1990 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Jul 10, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing fractional horsepower motors involves using each stator to customize the length of a rotor/shaft to match the thickness of the specific stator with which it will be used. This is accomplished by providing a fixture which receives the stator in a gauging position. The rotor/shaft, with a compressible member thereon, is placed on the fixture which is then closed over a distance fixed by the gage formed by the stator. As the fixture closes, a compressible member is compressed to exactly fit the length of the rotor/shaft assembly to the stator thickness. The compressible member is a preferably nylon or metal plug which is pushed into a metal cup and mounted at the end of the rotor as the fixture closes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.