Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Formed with main spar
Reexamination Certificate
2011-08-09
2011-08-09
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Formed with main spar
C416S24100B
Reexamination Certificate
active
07993104
ABSTRACT:
A turbine blade assembly with a spar and shell construction. The shell is held in place between a tip edge of the spar and an airfoil shaped groove on the platform surface. A segmented seal assembly is held within the groove between the shell bottom surface. The segmented seal has a top face slanted inward toward the spar to engage with a similar slanted surface formed on the bottom face of the shell. The seal segments fit within the groove to engage both side walls to form a tight seal interface between the shell bottom surface and the outer wall of the groove. The seal segments are forced upward against the slanted underside of the shell due to centrifugal forces from rotation. A cooling air passage to supply pressurized cooling air to the groove and the underside surface of the seal segments also can be used to force the seal segments up against the slanted underside of the shell. Forcing the seal segments up against the slanted shell underside also forces the seal segments outward from the spar to enhance the sealing interface with the wall groove to further enhance the sealing affect.
REFERENCES:
patent: 4473336 (1984-09-01), Coney et al.
patent: 4519745 (1985-05-01), Rosman et al.
patent: 4790721 (1988-12-01), Morris et al.
patent: 7080971 (2006-07-01), Wilson et al.
patent: 35 12 008 (1986-10-01), None
Florida Turbine Technologies, Inc.
Look Edward
Ryznic John
White Dwayne J
LandOfFree
Turbine blade with spar and shell does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Turbine blade with spar and shell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbine blade with spar and shell will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2699782