SCREW VACUUM PUMP
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United States of America Patent
Stats
-
N/A
Issued Date -
Mar 7, 2013
app pub date -
May 13, 2010
filing date -
May 24, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A screw vacuum pump includes a male rotor, a female rotor, a stator, and a drive motor/motors. A screw gear portion of the male rotor, a screw gear portion of the female rotor, and the stator cooperatively form a gas working chamber. The stator has an inlet port and an outlet port. At least one of the male rotor and the female rotor has a rotor hollow portion which is opened on at least one end face side in a rotation-axis longitudinal direction of the male rotor and/or the female rotor. The drive motor is at least partially received in the rotor hollow portion.
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Family
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Cited Art Landscape
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