Fluid reaction surfaces (i.e. – impellers) – Having frangible or fusible part or connection
Reexamination Certificate
2006-01-31
2006-01-31
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Having frangible or fusible part or connection
C416S19300A
Reexamination Certificate
active
06991428
ABSTRACT:
A fan blade for a gas turbine engine having an airfoil with a leading edge; a trailing edge; a concave side; and a convex side. The blade has an integral platform with: a convex fillet merging with the airfoil; a forward edge; an aft edge; and a thickness defined between a top surface and an underside surface. The platform includes a stiffener on the underside surface adjacent the convex side of the blade, such that the stiffener defines a blade-off event platform fracture path on a second side of the platform adjacent the following blade and adjacent the convex side of the airfoil.
REFERENCES:
patent: 3923420 (1975-12-01), Chifos
patent: 4019832 (1977-04-01), Salemme et al.
patent: 4688992 (1987-08-01), Kirpatrick et al.
patent: 4917574 (1990-04-01), Dodd et al.
patent: 5108261 (1992-04-01), Ress et al.
patent: 5263823 (1993-11-01), Cabaret et al.
patent: 5271718 (1993-12-01), Mitchell et al.
patent: 5277548 (1994-01-01), Klein et al.
patent: 5281096 (1994-01-01), Harris et al.
patent: 5375978 (1994-12-01), Evans et al.
patent: 5443365 (1995-08-01), Ingling et al.
patent: 5662458 (1997-09-01), Owen
patent: 5700133 (1997-12-01), Surdi
patent: 5836744 (1998-11-01), Zipps et al.
patent: 5853286 (1998-12-01), Bussonnet et al.
patent: 6033185 (2000-03-01), Lammas et al.
patent: 6071077 (2000-06-01), Rowlands
patent: 6146099 (2000-11-01), Zipps et al.
patent: 6158962 (2000-12-01), Lee et al.
patent: 6190133 (2001-02-01), Ress, Jr. et al.
patent: 6217283 (2001-04-01), Ravenhall et al.
patent: 6290465 (2001-09-01), Lammas et al.
patent: 6338611 (2002-01-01), Anderson et al.
patent: 701263 (1953-12-01), None
Bachman & LaPointe P.C.
Pratt & Whitney Canada Corp.
Verdier Christopher
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