Shrink-fit stress coupling for a shaft of differing materials

Details Shrink-fit stress coupling for a shaft of differing materials Shrink-fit stress coupling for a shaft of differing materials

2007-08-14

2007-08-14

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Support mounting, carrier or fairing structure

C416S24400R, C403S030000, C403S029000

Reexamination Certificate

active

11054490

ABSTRACT:
A shrink-fit coupling includes a discontinuous ring between a ceramic stub shaft of a turbine rotor and an inner diameter r2of a metallic shaft which typically supports a compressor rotor. If the materials for the ceramic stub shaft and the discontinuous ring are pre-determined and the radius of the ceramic stub shaft is also given, then the inner radius r2of the shaft should be chosen by the equation: r2=(CTE1−CTE2)/(CTE3−CTE2) r1.

REFERENCES:
patent: 3943703 (1976-03-01), Kronogard
patent: 4011737 (1977-03-01), Kruger et al.
patent: 4063850 (1977-12-01), Hueber et al.
patent: 4123199 (1978-10-01), Shimizu et al.
patent: 4281941 (1981-08-01), Rottenkolber
patent: 4639194 (1987-01-01), Bell, III et al.
patent: 5161908 (1992-11-01), Yoshida et al.
patent: 6431781 (2002-08-01), Schenk
patent: 2002/0150419 (2002-10-01), Schenk

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