Electric fuel pump with grooved commutator face
US6109893A · kind A · utility
6Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Oct 8, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23K5/142
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An electric fuel pump module includes a fuel pump driven by an electric motor. The motor has an armature provided with a commutator having a flat face. Brushes engage the flat face of the commutator to supply current to the armature. A groove in the flat face of the commutator provides relief preventing fuel from becoming trapped between the brush and the commutator face. The groove extends in a circular loop around the axis of rotation of the armature and may be centered on or laterally offset from the axis of rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.