Captured rotor seal
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United States of America Patent
Stats
-
Oct 27, 1992
Grant Date -
N/A
app pub date -
Jan 23, 1990
filing date -
Jan 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved seal is provided to minimize or eliminate lubricant migration and welling problems on electric motors, gear boxes, and lubricant contamination in rolling mills. The improved seal includes a stator ring fixed in the housing and a rotor ring sealingly mounted on the shaft for rotation therewith. A second, captured, rotor is provided within the stator ring and is sealingly mounted upon the shaft for rotation therewith. The captured rotor includes a plurality of radially extending slots which impart increased energy to migrating and welling lubricant so as to force the lubricant into a communicating annular groove within the stator, which in turn is in communication with a return trough which directs the energized lubricant back into the housing or, in the case of rolling mills, of contamination back to the exterior.
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