Rotor blades of turbomolecular pump

Details Rotor blades of turbomolecular pump Rotor blades of turbomolecular pump

1989-08-23

1991-07-23

Look, Edward K.

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

4151995, 416223A, 416238, F01D 136, F03B 500

Patent

active

050339362

ABSTRACT:
In a turbomolecular pump, the blade angle of each of rotor blades relative to the plane of a rotor gradually decreases from its base toward its outer most periphery, and the opening ratio and relative blade interval of said rotor blades are made substantially constant from the base of the rotor blade to the outer most periphery of said rotor blade.

REFERENCES:
patent: 2313413 (1943-03-01), Weske
patent: 3189264 (1965-06-01), Becker
patent: 3477381 (1969-11-01), Becker
patent: 3628894 (1971-12-01), Ferguson, Jr.
patent: 3826588 (1974-07-01), Frank
patent: 4309143 (1982-01-01), Klatt et al.

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