Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Patent
1988-12-21
1990-09-11
Smith, Leonard E.
Pumps
Condition responsive control of pump drive motor
By control of electric or magnetic drive motor
F04B 4902
Patent
active
049557955
ABSTRACT:
A scroll-type machine having a control arrangement which acts to disable the machine when there is an abnormal pressure in one of the scroll fluid pockets, thereby preventing damage to the machine upon reverse rotation or low system charge.
REFERENCES:
patent: 4551069 (1985-11-01), Gilmore
patent: 4696628 (1987-09-01), Kimura et al.
patent: 4767293 (1988-08-01), Caillat et al.
Copeland Corporation
Scheuermann David W.
Smith Leonard E.
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