Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Reexamination Certificate
2008-10-14
2011-12-13
Jones, Stephen (Department: 2817)
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
C416S22300B
Reexamination Certificate
active
08075272
ABSTRACT:
A steam turbine rotating blade for a low pressure section of a steam turbine engine is disclosed. The steam turbine rotating blade includes an airfoil portion. A root section is attached to one end of the airfoil portion. A dovetail section projects from the root section, wherein the dovetail section includes a skewed axial entry dovetail. A tip section is attached to the airfoil portion at an end opposite from the root section. A cover is integrally formed as part of the tip section. A part span shroud is attached at an intermediate section of the airfoil portion between the ends thereof. The blade includes an exit annulus area of about 47.7 ft2(4.43 m2) or greater.
REFERENCES:
patent: 4260331 (1981-04-01), Goodwin
patent: 5067876 (1991-11-01), Moreman, III
patent: 5174720 (1992-12-01), Gradl
patent: 5267834 (1993-12-01), Dinh et al.
patent: 5277549 (1994-01-01), Chen et al.
patent: 5299915 (1994-04-01), Dinh et al.
patent: 5393200 (1995-02-01), Dinh et al.
patent: 5480285 (1996-01-01), Patel et al.
patent: 5494408 (1996-02-01), Seeley et al.
patent: 5531569 (1996-07-01), Seeley
patent: 5829955 (1998-11-01), Saito et al.
patent: 6142737 (2000-11-01), Seeley et al.
patent: 6435833 (2002-08-01), Reluzco et al.
patent: 6435834 (2002-08-01), Reluzco et al.
patent: 6499959 (2002-12-01), Reluzco et al.
patent: 6568908 (2003-05-01), Namura et al.
patent: 6575700 (2003-06-01), Arai et al.
patent: 6652237 (2003-11-01), Yehle et al.
patent: 6682306 (2004-01-01), Murakami et al.
patent: 6814543 (2004-11-01), Barb et al.
patent: 6846160 (2005-01-01), Saito et al.
patent: 6893216 (2005-05-01), Snook et al.
patent: 7097428 (2006-08-01), Barb et al.
patent: 7195455 (2007-03-01), Stonitsch et al.
patent: 2002/0057969 (2002-05-01), Namura et al.
patent: 2003/0049131 (2003-03-01), Murakami et al.
patent: 2004/0126235 (2004-07-01), Barb et al.
patent: 2007/0292265 (2007-12-01), Burdgick et al.
patent: 2009/0214345 (2009-08-01), DeMania et al.
patent: 2010/0021306 (2010-01-01), Mujezinovic et al.
Amir Mujezinovic, “Bigger Blades Cut Costs”, Modern Power Systems, Feb. 2003, p. 25, 27.
Michael Boss, “Steam Turbine Technology Heats Up”, PEI Magazine, Apr. 2003, p. 77, 79, 81.
Riaz et al., “Dovetail Attachment for Use With Turbine Assemblies and Methods of Assembling Turbine Assemblies,” U.S. Appl. No. 11/941,751, filed Nov. 16, 2007, Patent Application, 16 pages.
Slepski et al., “Steam Turbine Rotating Blade,” U.S. Appl. No. 11/778,180, filed Jul. 16, 2007, Patent Application, 11 pages.
Demania et al., “Low Pressure Section Steam Turbine Bucket,” U.S. Appl. No. 12/037,346, filed Feb. 26, 2008, Patent Application, 15 pages.
Lee, Office Action Communication for U.S. Appl. No. 12/205,940 dated Aug. 11, 2011, 18 pages.
Lee, Office Action Communication for U.S. Appl. No. 12/205,941 dated Aug. 15, 2011, 17 pages.
Riaz Muhammad Saqib
Stathopoulos Dimitrios
Cusick Ernest G.
General Electric Company
Hoffman Warnick LLC
Jones Stephen
LandOfFree
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