Pumps – Motor driven – Including means utilizing pump fluid for augmenting cooling,...
Patent
1987-03-09
1988-03-01
Croyle, Carlton R.
Pumps
Motor driven
Including means utilizing pump fluid for augmenting cooling,...
417423A, 181202, F04B 1700, F04B 3500
Patent
active
047282665
ABSTRACT:
A motor drive vacuum pump comprises a motor provided with a rotor, a stator and a housing holding the rotor and the stator therein, a vacuum pump which is attached on the side surface of the motor housing and is driven by the motor to forcibly feed air from an intake port to a discharge port to thereby generate vacuum, a discharging passage means comprising a discharging hole for introducing the air to be discharged through the discharge port of the vacuum pump into the motor interior and a through hole formed in a part of the housing to discharge the air introduced into the motor interior to the atmosphere, and a discharge valve provided in a part of the discharging passage means.
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Matsumoto Akio
Seki Kimiaki
Croyle Carlton R.
Mitsubishi Denki & Kabushiki Kaisha
Stout Donald E.
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