Metal-graphite brush and motor including metal-graphite brush

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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C310S253000, C310S248000

Reexamination Certificate

active

07105977

ABSTRACT:
A metal-graphite brush for supplying electricity to a coil wound around a core provided at a rotor of a motor is made of sintered material having porosities at a surface and inside thereof, and the porosities is infiltrated with a conductive liquid having a boiling point higher than that of water.

REFERENCES:
patent: 2425046 (1947-08-01), Ramadanoff
patent: 2462055 (1949-02-01), Herwig
patent: 3772080 (1973-11-01), McKee
patent: 3996408 (1976-12-01), Fridman et al.
patent: 6068926 (2000-05-01), Sperling et al.
patent: 2003/0155836 (2003-08-01), Uda et al.
patent: 2005/0062350 (2005-03-01), Kuo et al.
patent: 2005/0236925 (2005-10-01), Kobayashi et al.
patent: 5-236708 (1993-09-01), None
patent: 2001-298913 (2001-10-01), None
patent: 2004-173486 (2004-06-01), None
patent: 2004173486 (2004-06-01), None

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