Fluid reaction surfaces (i.e. – impellers) – Unsymmetrical impeller or dissimilar working members
Reexamination Certificate
2006-05-02
2006-05-02
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Unsymmetrical impeller or dissimilar working members
C416S191000, C416S19300A, C416S248000, C416S500000, C029S889100, C029S889200
Reexamination Certificate
active
07037078
ABSTRACT:
In a moving turbine wheel, blade inserts are used with at least two blades interconnected by common outer and inner platforms and sharing a common root. The blade inserts have hollow roots in which respective recesses are formed, and the insert roots belonging to the same wheel and/or two different wheels are voluntarily given different configurations in order to adjust the resonant frequencies of the inserts to values that are significantly different, thereby ensuring that the inserts in the same wheel and/or between two different wheels are out of tune.
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Balleron Charles
Bion Claude
Girard Patrick
Lescure Xavier
Lopez José
Snecma Moteurs
Verdier Christopher
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