Electric fuel pump with grooved commutator face

Details Electric fuel pump with grooved commutator face Electric fuel pump with grooved commutator face

1998-10-08

2000-08-29

Walberg, Teresa

Pumps

Motor driven

Electric or magnetic motor

4174233, 310236, F27B 1400

Patent

active

061098930

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.

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patent: 5996210 (1999-12-01), Konig

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