Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2007-11-19
2010-12-07
Edgar, Richard (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
Reexamination Certificate
active
07845908
ABSTRACT:
An air cooled turbine blade for a gas turbine engine, the blade including a blade tip with a serpentine flow cooling passage formed around the tip peripheral edge and extending from the trailing edge around the suction side of the blade tip, around the leading edge and around the pressure side of the blade tip. Pressurized cooling air is supplied from a trailing edge region cooling supply channel and into the suction side serpentine passage to flow toward the leading edge of the blade. Cooling air flows around the leading edge serpentine flow tip passage and then along the pressure side serpentine flow passage. Cooling air flows out through trailing edge exit holes to cool the trailing edge region. In a second embodiment, a flow blocking wall is formed in the serpentine flow passage to separate the suction side serpentine passage from the pressure side serpentine passage.
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JPO Machine Translation of JP 2002-195003 A. Accessed Sep. 10, 2010.
Edgar Richard
Florida Turbine Technologies, Inc.
Ryznic John
LandOfFree
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