Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Patent
1989-11-14
1991-12-24
Smith, Leonard E.
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
417383, F04B 4306
Patent
active
050747550
ABSTRACT:
A compressor with a flexible diaphragm used as the pumping element, said compressor further including a sensor to monitor the position of the diaphragm and a control circuit for maintaining the diaphragm position in a preselected range to avoid contact between the diaphragm and the rest of the compressor. The compressor also includes an expansion member for compensating for the thermal expansion and compressibility of the working fluid of the compressor.
REFERENCES:
patent: 3207081 (1965-09-01), Bauer
patent: 3286640 (1966-11-01), Bauer
patent: 4705462 (1987-11-01), Balembois
patent: 4778356 (1988-10-01), Hicks
Scheuermann David W.
Smith Leonard E.
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