Carbon brush for electric machine

Details Carbon brush for electric machine Carbon brush for electric machine

2005-06-21

2005-06-21

Tamai, Karl (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S252000, C310S253000, C310S248000

Reexamination Certificate

active

06909219

ABSTRACT:
Molybdenum disulfide, tungsten disulfide or the like as a solid lubricant and any of alumina, silica, silicon carbide or the like as an abrasive are added to filter graphite. A metal of good electric conductor is coated over the whole surface of a carbon brush material except a part of the carbon brush material to be contacted with a commutator. When the commutator rotates clockwise, a metal coating of the good electric conductor is removed mechanically from at least a part of at least either of a left side surface or a right side surface.

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