Current-carrying member for a direct-current motor in a fuel pump, method for producing the same, and fuel pump
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United States of America Patent
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Jan 6, 2004
Grant Date -
Dec 5, 2002
app pub date -
Jun 5, 2002
filing date -
Jun 5, 2001
priority date (Note) -
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Abstract
A sulfidation-resistant current-carrying member, such as a commutator, suitable for a direct-current motor in a fuel pump is provided. The current-carrying member for a direct-current motor in a fuel pump includes a commutator composed of a carbon layer having carbon as a principal component and forming a sliding surface at one end, and a metal carbon layer fixedly bound with the carbon layer at the other end and comprising 55 to 90 wt % of metal having brass as a principal component and a remaining portion having carbon as a principal component. By using brass as a primary metal component in the metal carbon layer, it is possible to achieve a commutator with superior resistance to sulfidation.
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