Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Reexamination Certificate
2007-07-16
2011-10-18
Kershteyn, Igor (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
C416S248000
Reexamination Certificate
active
08038404
ABSTRACT:
A blade mountable to a disc comprises a blade platform and a blade root extending from the blade platform. The blade root comprises first, second, and third hooks and first, second and third necks. Each hook comprises a contact surface and a non-contact surface, and an angle between each contact surface and each non-contact surface is optimized to reduce local and average stresses.
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DeLessio Steven
Mujezinovic Amir
Kershteyn Igor
Nixon & Vanderhye P.C.
Nuovo Pignone Holdings S.p.A.
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