Combination end bell and brush holder for a dynamoelectric machine
US4355253A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Feb 27, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A one-piece end bell and brush holder for a dynamoelectric machine comprises a cup-shaped cap member molded of electrical insulating material. The cap member has a flat, annular base with its central opening accommodating the rotating shaft of the machine, and a circular outer wall shaped to have interfitting engagement with a cylindrical housing of the machine. Encircling the central opening is a circular inner wall that extends axially from the base a distance sufficient to encompass the commutator of the machine. The inner wall has four equispaced openings formed therein that permit brushes to move radially therethrough for engagement with the circumference of the commutator. The brushes are mounted in brush boxes, each of which includes a pair of side walls adjacent to and embracing the opening in the inner wall and extending radially outward from the inner wall to the outer wall. These side walls cooperate with inwardly facing flanges on the top edges thereof and with a radially extending stop member located between the side walls and along the bottom thereof to provide guideways in which the brushes are slidably received and contained. U-shaped terminals are positioned about …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.