Structure of a rotor shaft and method of making same

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – With runner shaft of specific shape or material

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Details

418179, 418328, 418112, 2940213, 2940216, F04D 2904

Patent

active

052267911

ABSTRACT:
In an apparatus accommodating a rotor of light alloy and a rotor shaft of steel secured to each other, the rotor shaft consists of a first shaft and a pair of second shafts integrally formed with or rigidly secured to the first shaft. The first shaft has a structure with a thermal coefficient of expansion close to that of the rotor whereas each of the second shafts has a structure with a thermal coefficient of expansion less than that of the first shaft.

REFERENCES:
patent: 1745854 (1930-02-01), Lawaczeck
patent: 3048505 (1962-09-01), Doepken
patent: 3337376 (1967-09-01), Grange
patent: 3470037 (1969-10-01), Suzuki
patent: 4302658 (1981-11-01), Beigay
patent: 4971536 (1990-11-01), Takeda et al.

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