Pumps – Motor driven – Electric or magnetic motor
Patent
1992-04-03
1993-11-16
Bertsch, Richard A.
Pumps
Motor driven
Electric or magnetic motor
62 6, 310 15, F04B 3504
Patent
active
052617998
ABSTRACT:
This invention relates to balanced linear motor compressors which operate without the use of oil and externally tuned resonant balancers. Such structures of this type, generally, provide a highly reliable oil-free compressor which is internally balanced for use with cryogenic refrigeration equipment so as to attain unattended, continuous operation without maintenance over extended periods of time.
REFERENCES:
patent: 451320 (1891-04-01), Eickemeyer
patent: 581204 (1897-04-01), Heftye
patent: 3149254 (1964-09-01), Carter et al.
patent: 3538357 (1970-11-01), Barthalon
patent: 4697113 (1987-09-01), Young
patent: 4894996 (1990-01-01), Kazumoto et al.
patent: 5088288 (1992-02-01), Katagishi et al.
Bertsch Richard A.
General Electric Company
Korytnyk Peter
McDaniel James R.
Webb II Paul R.
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