Structure for joining impeller to rotatable shaft

Details Structure for joining impeller to rotatable shaft Structure for joining impeller to rotatable shaft

1997-03-20

1999-10-05

Mah, Chuck Y.

Joints and connections

Interfitted members

Radially interposed shim or bushing

403375, 403359, F01D 526, F16D 1100

Patent

active

059612460

ABSTRACT:
There is provided a structure for joining an impeller to a rotatable shaft, including (a) a bushing through which the impeller is joined to the rotatable shaft, the bushing including a hollow cylindrical portion which is to fit into a recess formed with the impeller and into which the rotatable shaft is to fit, (b) a first joint structure for joining the bushing to the impeller so that the bushing is positioned coaxially with the impeller, and (c) a second joint structure for joining the rotatable shaft to the bushing so that the rotatable shaft is positioned coaxially with the bushing. The structure provides a sufficient ability for transferring a torque between an impeller and a shaft, self-aligning performance between an impeller and a shaft, and good serviceability for assembling and disassembling, and further provides higher accuracy in axially positioning an impeller and a shaft and lower fabrication costs.

REFERENCES:
patent: 2730387 (1956-01-01), White
patent: 3222772 (1965-12-01), Leyner
patent: 3894621 (1975-07-01), Quick
patent: 4210372 (1980-07-01), McGee et al.
patent: 5163816 (1992-11-01), Goetzke et al.

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