Patent ID: 7014432
Filing Date: 2006-03-21
Classification: F02M,F04D

Abstract:
1. A fuel pump comprising: a housing; a pump section disposed in said housing; a motor section including a commutator, disposed in said housing, for driving said pump section; a cover disposed at an end of said housing on a side of said motor section, said cover having a pair of spring holes and a pair of brush holes; a pair of brushes comprised of a brush body and a flexible connecting wire and disposed in said pair of brush holes to be in contact with said commutator each said brush body having a longitudinal axis and first and second axial ends, a contact surface for contacting a contact surface of the commutator being defined at said first axial end, each said brush further including an engaging surface axially spaced from said contact surface of said brush body, said engaging surface defined by one of: a surface of said brush body between said first and second axial ends of said brush body and an axial surface of said connecting wire; and a pair of springs, disposed in said pair of spring holes for biasing said brushes against said commutator; and at least one engaging member, disposed between said engaging surface and a contact surface of said commutator to selectively engage the engaging surface for limiting movement of said respective brush toward said motor section.