Dovetail structure of fan

Details Dovetail structure of fan Dovetail structure of fan

2011-04-05

2011-04-05

Wiehe, Nathaniel (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

Reexamination Certificate

active

07918652

ABSTRACT:
The invention provides a dovetail structure of a fan which attaches a fan20having an inlet hub diameter smaller than an outlet hub diameter to a portion around a discoid disc rotationally driven by a turbine. The disc10has a plurality of dovetail grooves12extending at a fixed angle θ1with respect to an axis1of a rotation axis from a leading edge10ato a trailing edge10bthereof, and spaced at a fixed angle in a peripheral direction. The fan20has a dovetail portion22extending at the same angle as an angle of the dovetail groove and capable of being fitted to the dovetail groove, in an inner end thereof.

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Machine Translation of FR 1143952A, retrived Jun. 29, 2010 from http://ep.espacenet.com.
Office Action issued in co-pending U.S. Appl. No. 11/680,010, mailed Jul. 2, 2010.

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