Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Reexamination Certificate
2011-03-15
2011-03-15
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
Reexamination Certificate
active
07905709
ABSTRACT:
A turbine bucket and wheelpost assembly reduces the number of buckets in at least one of the stages of the turbine from 92 to 60 while reducing stresses at the assembly points of the buckets and wheelposts. The buckets and wheelposts being formed with complementary fillets and tangs that provide for the insertion of the bucket into the broach slot between two wheelposts. The angles of the tang surfaces on both the bucket and wheelpost range from 50° to 57°. The upper surface of the wheelpost is scalloped to reduce weight and the tangs and fillets of both the bucket and wheelpost are formed from curved and straight surfaces to reduce stresses on the assembly.
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European Search Report, Appln. GB0502652.1 (Jun. 28, 2005).
Lagrange Benjamin Arnette
Lloyd Timothy Brian
General Electric Company
Nixon & Vanderhye P.C.
Verdier Christopher
LandOfFree
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