Multistage vacuum pump with bore for fouling removal

Details Multistage vacuum pump with bore for fouling removal Multistage vacuum pump with bore for fouling removal

1989-02-17

1990-07-24

Vrablik, John J.

Rotary expansible chamber devices

Multistage

Interengaging rotary members

418 46, 418270, F04C 1818, F04C 2900

Patent

active

049432150

ABSTRACT:
A multistage vacuum pump with a case with at least two pump chambers in the case, and with at least one passage connecting the pump chambers together. To detect fouling in the especially sensitive connecting passages in a simple manner, it is proposed to configure the passages as part of bores leading to the outside, which can be closed with a plug.

REFERENCES:
patent: 1627024 (1927-05-01), Finch
patent: 3265292 (1966-08-01), Schibbye

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