Fuel pump assembly
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United States of America Patent
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-
Oct 25, 2016
Grant Date -
Aug 9, 2012
app pub date -
Jan 27, 2012
filing date -
Feb 4, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A fluid pump includes an electric motor having a commutator and one or more brushes communicated with the commutator, and a pumping assembly driven by the electric motor. An outer shell of the pump encloses at least a portion of the electric motor and the pumping assembly, a cap is carried by the outer shell and has a brush passage formed therein for each brush, with each brush passage including a cavity defined by at least one wall. A brush cap has an end received in the cavity with an interference fit wherein the end of the brush cap has an outer diameter that is larger than the diameter of the cavity and the end of the brush cap has strength that causes it to deform upon installation into the cavity without causing significant plastic deformation of the wall of the cavity.
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