Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Laminated – embedded member or encased material
Reexamination Certificate
2009-04-16
2011-12-27
Lebentritt, Michael (Department: 2829)
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Laminated, embedded member or encased material
C416S22900R, C416S232000, C416S233000, C416S24100B
Reexamination Certificate
active
08083489
ABSTRACT:
A hybrid fan blade for a gas turbine engine is provided that includes an airfoil and a composite panel. The airfoil has a first side and a second side orientated opposite the first side. The first and second sides extend between a tip, a base, a leading edge and a trailing edge. The airfoil includes a plurality of cavities disposed in the first side of the airfoil, which cavities extend inwardly toward the second side. The cavities collectively form an opening. At least one rib is disposed between the cavities. A shelf is disposed around the opening. The composite panel is attached to the shelf first mounting surface and to the rib, and is sized to enclose the opening. The first composite panel is a load bearing structure operable to transfer loads to the airfoil and receive loads from the airfoil.
REFERENCES:
patent: 3002717 (1961-10-01), Pavlecka
patent: 3060561 (1962-10-01), Watter
patent: 4029838 (1977-06-01), Chamis et al.
patent: 4118147 (1978-10-01), Ellis
patent: 4671470 (1987-06-01), Jonas
patent: 4808485 (1989-02-01), Prewo et al.
patent: 4885212 (1989-12-01), Prewo et al.
patent: 4911990 (1990-03-01), Prewo et al.
patent: 4999256 (1991-03-01), Prewo et al.
patent: 5015116 (1991-05-01), Nardone et al.
patent: 5079099 (1992-01-01), Prewo et al.
patent: 5295789 (1994-03-01), Daguet
patent: 5366765 (1994-11-01), Milaniak et al.
patent: 5370831 (1994-12-01), Blair et al.
patent: 5407326 (1995-04-01), Lardellier
patent: 5634771 (1997-06-01), Howard et al.
patent: 5692881 (1997-12-01), Leibfried
patent: 5797239 (1998-08-01), Zaccone et al.
patent: 5913661 (1999-06-01), Panovsky et al.
patent: 5931641 (1999-08-01), Finn et al.
patent: 5947688 (1999-09-01), Schilling et al.
patent: 6033186 (2000-03-01), Schilling et al.
patent: 6039542 (2000-03-01), Schilling et al.
patent: 6139278 (2000-10-01), Mowbray et al.
patent: 6287080 (2001-09-01), Evans et al.
patent: 6364616 (2002-04-01), Stevenson et al.
patent: 6739381 (2004-05-01), Esser et al.
patent: 6743504 (2004-06-01), Allen et al.
patent: 7144222 (2006-12-01), Lanni et al.
patent: 7240718 (2007-07-01), Schmidt et al.
patent: 7334997 (2008-02-01), Karafillis
patent: 7766625 (2010-08-01), Burdgick et al.
patent: 7794197 (2010-09-01), Thompson et al.
patent: 7942639 (2011-05-01), Burdgick et al.
patent: 7955054 (2011-06-01), El-Aini et al.
patent: 2005/0247818 (2005-11-01), Prichard et al.
patent: 2005/0249601 (2005-11-01), Burdgick
patent: 2007/0292274 (2007-12-01), Burdgick et al.
patent: 2010/0129651 (2010-05-01), Schreiber
patent: 2011/0070092 (2011-03-01), Gerlach
Lamm Foster P.
Nardone Vincent C.
Smith Peter G.
Strife James R.
Viens Daniel V.
Lebentritt Michael
O'Shea Getz P.C.
United Technologies Corporation
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