Carbon commutator
AssigneeKirkwood Industries
InventorsCharles P. Farago, D. Bruce Ramsey, Sr.
Life of this patent
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Abstract
A fuel pump and the method for making the fuel pump designed for operation in an environment of a hydrocarbon fuel having a significant portion of oxygen-containing moieties are disclosed. The pump consists of a body, a shaft, a commutator, and brushes in contact with the commutator; the method of making the commutator comprises the steps of affixing a formed carbon article to a suitable substrate, machining the article to a commutator, and cutting slots into the commutator. In one embodiment, the method includes forming the carbon article directly on the substrate prior to the machining steps.
Claims11
A commutator comprising:
- a planar substrate including a series of current-carrying regions, a corresponding series of commutator segments, and a conductive bonding layer bonding each of said commutator segments to said substrate;
- each of said commutator segments comprising:
- a carbon base having a brush-contacting first surface and a second opposite surface which is substantially parallel to said first surface;
- and
- a conductive plating positioned between said second surface of said carbon base and said bonding layer.
Dependencies are inferred from the claim text.