Liquid purification or separation – With repair or assembling means – Removable treatment part with normally disabled flow controller
Patent
1985-10-01
1986-05-13
Gluck, Richard E.
Liquid purification or separation
With repair or assembling means
Removable treatment part with normally disabled flow controller
2104165, F04C 2702, F04B 3916
Patent
active
045885044
ABSTRACT:
An oil-sealed vacuum pump has an oil circuit which has an externally located oil filter that may be operatively connected to or disconnected from the oil circuit by a coupler. The coupler has a rotatably supported valve disc having a first face oriented towards oil circuit ports in the pump and a second face oriented towards the filter. The valve disc further has spaced first and second apertures passing therethrough and a groove provided in the first face and oriented approximately perpendicularly to an imaginary line connecting the first and second apertures with one another. A valve actuating mechanism is provided for rotating the valve disc into a first position in which the first and second apertures are in registry with the circuit ports to maintain communication between the filter and the oil circuit and for rotating the valve disc into a second position in which the first and second apertures are out of registry with the circuit ports to block communication between the filter and the oil circuit and in which the groove is in registry with the circuit ports to maintain a direct communication therebetween to thus short-circuit the oil circuit.
REFERENCES:
patent: 2497247 (1950-02-01), Von Wangerheim
patent: 2955712 (1960-10-01), Gutkowski
patent: 3526251 (1970-09-01), Rosaen
patent: 4379053 (1983-04-01), Brane
patent: 4529515 (1985-07-01), Selz
Berges Hanns-Peter
Leier Wolfgang
Gluck Richard E.
Leybold-Heraeus GmbH
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