Pumps – Condition responsive control of pump drive motor – In response to pump speed
Patent
1992-12-10
1994-10-11
Bertsch, Richard A.
Pumps
Condition responsive control of pump drive motor
In response to pump speed
417 45, 417203, 417205, 417250, 4174103, 4182011, F04C 2300, F04D 1904
Patent
active
053541790
ABSTRACT:
A fluid rotating apparatus according to the present invention is designed to promptly achieve an extremely high degree of vacuum from atmospheric pressure by its single apparatus. Moreover, high-speed synchronous rotation of the rotary shafts of the apparatus is controlled by use of a rotary position detecting sensor, to thereby avoid control through mechanical contact thereof with a gear or the like. In addition, hydrostatic bearings are employed for supporting the rotary shaft to avoid mechanical abrasion and the use of lubricant oil.
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Abe Yoshikazu
Hasegawa Mikio
Maruyama Teruo
Taguchi Tatsuhisa
Bertsch Richard A.
Matsushita Electric - Industrial Co., Ltd.
McAndrews, Jr. Roland G.
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