Vacuum pump

Details Vacuum pump Vacuum pump

1975-09-15

1976-09-28

Husar, C. J.

Rotary expansible chamber devices

With mechanical sealing

Seal element between stationary cylinder parts

291564R, 29458, 418 67, 418179, F04C 2700

Patent

active

039828646

ABSTRACT:
A rotary mechanical vacuum pump has a pump chamber formed of aluminum which has been treated by hard anodizing the working surfaces of the pump chamber and the lapped mating surfaces between the parts surrounding the chamber, with a high vacuum grease applied to such mating surfaces and providing an effective seal against leakage between the pump chamber and the ambient atmosphere.

REFERENCES:
patent: 2243464 (1941-05-01), Kucher
patent: 2294037 (1942-08-01), Kucher
patent: 2611323 (1952-09-01), Digney
patent: 2620553 (1952-12-01), Schultz
patent: 3791780 (1974-02-01), Fritch et al.

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