Pumps – Motor driven – Electric or magnetic motor
Patent
1991-07-29
1994-03-01
Bertsch, Richard A.
Pumps
Motor driven
Electric or magnetic motor
403147, F04B 1700
Patent
active
052901564
ABSTRACT:
A pumping unit is of the type having a compressor made up of a cylinder and piston extending between a walking beam and samson post, opposite connecting end portions of the compressor clampingly engaging the walking beam and samson post, respectively, and spherical bearing members of the non-lubricating type are disposed in each of the connecting end portions to undergo universal movement in response to any lateral displacement or side loading of the walking beam.
REFERENCES:
patent: 1033414 (1912-07-01), Kahn
patent: 1775733 (1930-09-01), Phipps
patent: 2113562 (1938-04-01), Mason
patent: 3655301 (1972-04-01), McClung
patent: 4345734 (1982-08-01), Studinger
patent: 4530646 (1985-07-01), McCoy
patent: 4557351 (1985-12-01), Yolk
patent: 4653381 (1987-03-01), van Os
patent: 4802422 (1989-02-01), Beard
patent: 5052824 (1991-10-01), Van Wyk
patent: 5074698 (1991-12-01), Lippert
Basichas Alfred
Bertsch Richard A.
Reilly John E.
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