Seal arrangement for an oil-sealed rotary vacuum pump
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United States of America Patent
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-
Mar 24, 1987
Grant Date -
N/A
app pub date -
Feb 23, 1985
filing date -
May 30, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An oil-sealed rotary vacuum pump includes a pump system and an electric drive motor connected by a drive shaft and located within a housing. The housing is divided by a partition into two separate compartments with the pump system in one compartment and the drive motor in the other compartment. The drive shaft extends through a passage in the partition between the two compartments and the passage is arranged so that any leakage flow is directed from the motor compartment into the pump system compartment.
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