Fluid reaction surfaces (i.e. – impellers) – Multiple axially spaced working members
Patent
1985-05-01
1987-03-31
Garrett, Robert E.
Fluid reaction surfaces (i.e., impellers)
Multiple axially spaced working members
403326, F01D 506
Patent
active
046539840
ABSTRACT:
A first turbine rotor hub 32 and a second turbine rotor hub 42 each have respective internal splines 52, 62 which engage coaxial, non-concentric external splines 54, 64 on a shaft 20 and are in thrust bearing relationship cooperating, circumferentially disposed, radially inwardly extending lugs 35, 45 on each hub 32, 42 define radially inwardly extending projections 80. A resilient split metal band 60, having circumferentially disposed apertures 61 overlies the projections 80 which extend through the apertures 61. The uninstalled diameter of the band is greater than the installed diameter such that the band is self-retaining. The assembly requires no bolts between the rotor stages 30 and 40 to hold the two stages together. In another embodiment the turbine stages 30, 40 are part of a turbine module 5 which includes a stator assembly 94.
REFERENCES:
patent: 2553220 (1951-05-01), Troeger
patent: 3610777 (1971-10-01), Wagle
patent: 3672708 (1972-06-01), Zemberry
patent: 3841792 (1974-10-01), Amos
patent: 4004860 (1977-01-01), Gee
patent: 4029436 (1977-06-01), Shoup, Jr. et al.
patent: 4127359 (1978-11-01), Stephan
patent: 4151779 (1979-05-01), Timmer
Garrett Robert E.
Kwon John
Revis Stephen E.
United Technologies Corporation
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