Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Reexamination Certificate
2007-11-27
2007-11-27
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
C416S19600R, C416S21900R
Reexamination Certificate
active
11214303
ABSTRACT:
The invention relates to a gas turbine blade or vane ring having a supporting structure and gas turbine blades or vanes secured to it. The gas turbine blades or vanes have a blade or vane root, which is successively adjoined by a platform and then a blade profile which is curved in the longitudinal direction, the blade or vane root running in the longitudinal direction of the blade profile, and the platform having two platform longitudinal edges which are bent parallel and run in the longitudinal direction. To provide an alternative gas turbine blade or vane ring with simplified assembly, it is proposed that the blade or vane root be shaped in such a manner that the suction-side or pressure-side blade or vane root surface of the associated platform longitudinal edge be curved convexly or concavely, respectively. Moreover, the invention relates to the use of a gas turbine blade or vane ring of this type.
REFERENCES:
patent: 5435693 (1995-07-01), Shaffer
patent: 6726452 (2004-04-01), Strassberger et al.
patent: 6739837 (2004-05-01), Barnette et al.
patent: WO 01/59263 (2001-08-01), None
Beeck Alexander Ralph
Irmisch Stefan
Look Edward K.
Siemens Aktiengesellschaft
White Dwayne J
LandOfFree
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