Seal arrangement for an electric motor
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United States of America Patent
Stats
-
Jan 9, 2001
Grant Date -
N/A
app pub date -
Sep 30, 1999
filing date -
Mar 17, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A technique is provided for sealing a bearing cavity in a rotating machine such as an electric motor. The bearing cavity is defined by annular elements on either side of an antifriction bearing set. Seals are provided on the sides of the bearing cavity and are secured to a support structure, such as the motor housing, and include elements which ride against the rotating shaft during operation. The seals exert a sealing force against the rotating element which results at least partially from internal pressure within the bearing cavity provided by a pressurized lubricant stream. The lubricant stream is provided in the form of an airborne oil mist.
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