Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Reexamination Certificate
2005-11-08
2005-11-08
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
C416S190000, C416S191000, C415S173400, C415S173500, C415S173600
Reexamination Certificate
active
06962484
ABSTRACT:
This arrangement relates to a moving blade (1), cast in one piece, for a turbomachine, in particular a turbine or compressor, comprising an aerodynamically shaped profile body (2) which has a shroud band (5). The shroud band (5) projects beyond the profile body (2) in the circumferential direction (6) and has a fin (12). The fin (12) possesses a base portion (14), a transitional portion (15) and a sealing portion (16). An axially measured wall thickness decreases in a transitional portion (15) from the base portion (14) to the sealing portion (16). To avoid a porous structure in the base portion (14), two depressions (17), which reduce the wall thickness of the base portion (14), are integrally molded on the outside of the base portion (14).
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patent: 2001-193405 (2001-07-01), None
EPO Search Report, dated May 8, 2003.
Patent Abstracts Of Japan, vol. 2000, No. 03, Mar. 30, 2000, -& JP 11 350902 A (Ishikawajima Harima Heavy Ind Co Ltd), Dec. 21, 1999, Zusammenfassung Abbildungen 1A, 1B (5 pp).
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Seach Report, prepared by the European Patent Office, for Swiss Appl. No. CH 6362002, issued on Jul. 18, 2001.
Brandl Herbert
Hoffs Alexander
ALSTOM Technology LTD
Cermak Adam J.
Cermak & Kenealy LLP
Verdier Christopher
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