Commutator for two speed electric motor and motor incorporating same
US5949174A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1998 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jul 8, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A commutator is disclosed which is adapted to be mounted on a rotor shaft of an electric motor for cooperation with electrical contacts of the motor, the commutator being capable of accommodating two speeds of the motor. The commutator includes a support member formed of electrically insulating material and having a central opening for receiving the rotor shaft, the support member having a surface portion for attachment of commutator segments. A first plurality of circumferentially spaced, electrically conductive commutator segments are attached to the surface portion of the support member and are arranged in a generally circular array and wired to the armature to accommodate at least a first speed of the motor. A second plurality of circumferentially spaced, electrically conductive commutator segments are attached to the surface portion of the support member and are positioned radially outward of the first plurality of spaced commutator segments. The second plurality of segments are also arranged in a generally circular array and wired to the armature to accommodate the second speed of the motor. Hook members are provided to connect the first and second pluralities of commutator s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.