Pumps

Details Pumps Pumps

1988-06-20

1989-05-23

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

4151995, 415914, F01D 126

Patent

active

048325643

ABSTRACT:
A turbo-molecular pump has stator discs 2 separated from one another by spacer rings 3 constructed in such a manner that gases streaming back can re-enter the suction space 8 through reduced portions 5 at the outer diameter and through radial recesses 6. Inner reduced portions 7 serve for the additional location of the stator discs 2.

REFERENCES:
patent: 4111595 (1978-09-01), Becker et al.
patent: 4456433 (1984-06-01), Henning et al.
patent: 4550593 (1985-11-01), Reich
patent: 4673331 (1987-06-01), Kolb

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