Rotary vane evacuating pump

Details Rotary vane evacuating pump Rotary vane evacuating pump

1984-07-02

1986-05-13

Croyle, Carlton R.

Pumps

Successive stages

Stages driven by relatively movable motor working members

417252, 417253, 417360, 418 13, 418 83, F04C 2300, F04C 2900

Patent

active

045883580

ABSTRACT:
A rotary vane evacuating pump having two series connected pumping stages is disclosed. Each pumping stage is provided as an exchangeable unit and has a housing which is detachably connected to one face of an interface flange. The housings of the pumping stages are contained in a chamber defined between the interface flange and an outer shell which is detachably mounted thereto. The chamber is filled with water surrounding and contacting the two housings. Each pumping stage is readily dismantled for the purpose of service or replacement.

REFERENCES:
patent: 1476482 (1923-12-01), Berrenberg
patent: 1934155 (1933-11-01), Van Deventer
patent: 2780406 (1957-02-01), Feldbush
patent: 2936949 (1960-05-01), Broom
patent: 2961151 (1960-11-01), Fobian
patent: 3008631 (1961-11-01), Paugh
patent: 3713426 (1973-01-01), Jensen
patent: 3948225 (1976-04-01), Lester

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