Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Radially extending web or end plate
Reexamination Certificate
2006-09-26
2006-09-26
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Radially extending web or end plate
C416S235000, C416S23600R
Reexamination Certificate
active
07112043
ABSTRACT:
An air foil includes a leading edge, a trailing edge, a hub contour, and a tip contour, whereby the hub contour and tip contour extend between the leading and trailing edges to define a blade surface therebetween. A localized thick spot is disposed between the leading edge and the trailing edge and extends from a first point on the hub contour to a second point on the tip contour. The localized thick spot includes a generally sheared profile and is operable to provide the air foil with a desired strength while concurrently providing desired aerodynamic properties.
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patent: 6905309 (2005-06-01), Nussbaum et al.
patent: WO 8000468 (1980-03-01), None
Dresser-Rand; Isopac Compressor Impeller Upgrade; “Driving down operating costs by increasing compressor efficiency” (2000-2003); pp. 1-2.
Clean Dry Air, Inc.; Centrifugal Air Compressor Surge; “What word strikes fear in the heart of centrifugal compressor operators? SURGE!” (Aug. 2000); pp. 1-4.
Compressor Surge; “Dissection of Surge in a High Speed Centrifugal Compressor Using Digital PIV”; Mark P. Wernet and Michelle Bright; (Jan. 1999); pp. 1-2.
General Motors Corporation
Harness & Dickey & Pierce P.L.C.
Look Edward K.
White Dwayne J
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