Scalloped surface turbine stage

Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing

Reexamination Certificate

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Reexamination Certificate

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07134842

ABSTRACT:
A turbine stage includes a row of airfoils joined to corresponding platforms to define flow passages therebetween. Each airfoil includes opposite pressure and suction sides and extends in chord between opposite leading and trailing edges. Each platform has a scalloped flow surface including a bulge adjoining the pressure side adjacent the leading edge, and a bowl adjoining the suction side aft of the leading edge.

REFERENCES:
patent: 4194869 (1980-03-01), Corcokios
patent: 4778338 (1988-10-01), Bessay
patent: 4832567 (1989-05-01), Bessay
patent: 5397215 (1995-03-01), Spear et al.
patent: 6017186 (2000-01-01), Hoeger et al.
patent: 6283713 (2001-09-01), Harvey et al.
patent: 6338609 (2002-01-01), Decker et al.
patent: 6341939 (2002-01-01), Lee
patent: 6354797 (2002-03-01), Heyward et al.
patent: 6419446 (2002-07-01), Kvasnak et al.
patent: 6478545 (2002-11-01), Crall et al.
patent: 6511294 (2003-01-01), Mielke et al.
patent: 6561761 (2003-05-01), Decker et al.
patent: 6669445 (2003-12-01), Staubach et al.
patent: 6719529 (2004-04-01), Tiemann
patent: 6830432 (2004-12-01), Scott et al.
patent: 6837679 (2005-01-01), Kawarada et al.
patent: 2004/0081548 (2004-04-01), Zees et al.
patent: 229266 (1944-01-01), None
patent: 1602965 (1971-04-01), None
patent: 58-32903 (1983-02-01), None
Harvey et al, “Non-Asxisymmetric Turbine End Wall Design: Part 1 Three Dimensional Linear Design System,” ASME 99-GT-337, Jun. 1999, pp. 1-9.
U.S. Appl. No. , filed Dec. 13, 2004, entitled “Fillet Energized Turbine Stage,” by Ching-Pang Lee.
U.S. Appl. No. 11/010,688, filed Dec. 13, 2004, entitled “Fillet Energized Turbine Stage,” by Ching-Pang Lee.
Patent Abstract of Japan, vol. 007, No. 112 (M-215), May 17, 1983, European Patent Office, publication No. 58032903, pub. Date Feb. 26, 1983, single page.

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