Device and method for detachably connecting an impeller to a...

Details Device and method for detachably connecting an impeller to a... Device and method for detachably connecting an impeller to a...

2007-02-27

2007-02-27

Edgar, Richard A. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Turbo machine

C416S24400R

Reexamination Certificate

active

11170032

ABSTRACT:
A rotor assembly for a turbomachine includes an impeller, a shaft, a bolt, and a compliant spacer. The impeller has an opening extending in an axial direction and a stem with an outer surface having a tapered profile in a cross section including the axis and a non-circularly symmetric profile in a cross section perpendicular to the axis. The shaft includes a bore that is configured to receive and engage the impeller stem. The bolt connects the impeller to the shaft, and the compliant spacer is located between a first surface of the shaft and a first surface of the impeller, wherein the compliant spacer substantially conforms to the first surface of the shaft and to the first surface of the impeller when the bolt is tightened to a predetermined torque value.

REFERENCES:
patent: 6254349 (2001-07-01), Haugen et al.
patent: 6461111 (2002-10-01), Haugen et al.
patent: 6499958 (2002-12-01), Haugen et al.
patent: 6616412 (2003-09-01), Haugen et al.
patent: 6896479 (2005-05-01), Svihla et al.

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