Annular molded article secured to a shaft
US4376254A · kind A · utility
33Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1981 |
| Grant date | Mar 8, 1983 |
| Priority date | — |
| Expiry date | Jun 10, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7047
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stamped and rolled sheet metal bushing having pointed barbs on its exterior periphery and longitudinal ribs on its interior periphery is inserted into the bore of a premolded commutator assembly. An armature shaft is press fit into the bushing assembly, deforming the longitudinal ribs to couple the shaft to the bushing and embedding the pointed barbs into the molded material of the commutator to couple the bushing to the commutator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.