Metal working – Method of mechanical manufacture – Impeller making
Reexamination Certificate
2011-07-26
2011-07-26
Bryant, David P (Department: 3726)
Metal working
Method of mechanical manufacture
Impeller making
C029S401100, C415S209300
Reexamination Certificate
active
07984548
ABSTRACT:
A vane unit system having a plurality of vane units having at least one airfoil projecting from a base is modified by placing a hole in the base and receiving a pin which extends between adjacent bases of vane units. A series of modified bases form a rigid ring of vanes that are less susceptible to vane motion caused by pressure fluctuations within the compressor of a gas turbine. A blade assembly tool having a shape to fit within the slit in a casing that receives the vane units allows for the installation of vane units with interlocking pins without the necessity of having to remove the rotor from the casing.
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Anderson Rodger O.
Willett Fred T.
Bryant David P
DRS Power Technology Inc.
SNR Denton US LLP
Taousakis Alexander P
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