Spark suppression dust sealing for a motor apparatus
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United States of America Patent
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Jul 9, 2002
Grant Date -
N/A
app pub date -
May 24, 2000
filing date -
May 24, 2000
priority date (Note) -
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status (Latency Note)
Importance
Abstract
In one embodiment of the present invention, an electric motor is provided. A component of the electric motor, the commutator assembly, has a commutator and a brush assembly. The brush assembly encloses conductive brushes that are in contact with the commutator. A shaft is rotatably mounted about an axis, and a bearing is disposed around the shaft. The commutator is connected to the shaft, and a first seal surrounds the commutator. The first seal substantially isolates the commutator assembly from the internal ambient atmosphere of the electric motor. Further, a second seal substantially isolates the shaft and the bearing from the commutator and the conductive brushes.
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