Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2006-11-08
2009-10-13
Nguyen, Ninh H (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S189000
Reexamination Certificate
active
07600973
ABSTRACT:
A blade for a gas turbine engine comprises an aerofoil having a root portion, a tip portion located radially outwardly of the root portion, and leading and trailing edges extending between the root portion and the tip portion. A shroud extends transversely from the tip portion of the aerofoil and the aerofoil defines interior cooling passages which extend between the root portion and the tip portion. The aerofoil includes a wall member adjacent the trailing edge and a support structure extending from the wall member to the shroud to support the shroud. The support structure permits a flow of cooling air from a cooling passage to the trailing edge at a region proximate the tip portion of the aerofoil. Optionally, the aerofoil also includes a flow disrupting arrangement.
REFERENCES:
patent: 4127358 (1978-11-01), Parkes
patent: 4474532 (1984-10-01), Pazder
patent: 4940388 (1990-07-01), Lilleker et al.
patent: 5488825 (1996-02-01), Davis
patent: 2002/0172590 (2002-11-01), Sreekanth
patent: 0 894 946 (1999-02-01), None
Connolly Charles F
Tibbott Ian
Manelli Denison & Selter PLLC
Melcher Jeffrey S.
Nguyen Ninh H
Rolls-Royce plc
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