Fluid reaction surfaces (i.e. – impellers) – Perimetric blading extending axially between annular members
Reexamination Certificate
2005-07-22
2008-09-09
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Perimetric blading extending axially between annular members
C416S187000, C416S19800R, C416S243000, C416SDIG004, C416SDIG004, C415S053100, C415S119000
Reexamination Certificate
active
07422418
ABSTRACT:
A cross flow fan of an indoor unit of, for example, an air conditioner includes a pair of disc-shaped end plates and a plurality of fan blades attached to the end plates in a ring-shaped arrangement. Each of the fan blades has a cross sectional area ratio of Sa/Sb in a range of 1.3 to 1.6, preferably, 1.4 to 1.5, in which Sa is a sectional area of a fan inner peripheral side half portion of the blade and Sb is a sectional area of a fan outer peripheral side half portion of the blade at a time when the fan blade is cut perpendicularly with respect to a longitudinal direction of the fan blade and divided into two sectional areas along a central division line in a blade chord direction.
REFERENCES:
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patent: 5944481 (1999-08-01), Stone et al.
patent: 6261051 (2001-07-01), Kolacny
patent: 7118345 (2006-10-01), Wu et al.
patent: 2003/0194311 (2003-10-01), Ahn et al.
patent: 10-131886 (1998-05-01), None
Ishijima Mitsuyoshi
Okada Kaku
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Toshiba Carrier Corporation
Verdier Christopher
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