Selective mode multi-stage vacuum pump

Details Selective mode multi-stage vacuum pump Selective mode multi-stage vacuum pump

1979-01-22

1981-10-20

Taylor, Billy S.

Pumps

Alternate series or parallel operation of plural pumps

417244, 417360, 418 39, 418 97, 418147, F04B 2304

Patent

active

042957940

ABSTRACT:
The invention pertains to vacuum pump structure, and the innovations include a multiple pumping chamber pump wherein substantially identical pumping chambers may be assembled in contiguous relationship, and by the selective use of a pump head plate mounted upon both chambers the pump may operate in either a series or parallel mode. Further innovations include a novel air conducting nozzle which minimizes oil loss, and the pump employs a combination carrying handle and base interposed between the motor and pumping structure which facilitates assembly and handling.

REFERENCES:
patent: 1913657 (1933-06-01), Buchanan et al.
patent: 3136478 (1964-06-01), Soumerai
patent: 3578879 (1971-05-01), Long
patent: 3791780 (1974-02-01), Fritch et al.
patent: 3837764 (1974-09-01), Fritch et al.
patent: 3982864 (1976-09-01), Cain
patent: 4120621 (1978-10-01), Pikul

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