Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Reexamination Certificate
2007-08-22
2011-10-25
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
Reexamination Certificate
active
08043061
ABSTRACT:
A turbine bucket includes a bucket airfoil having a tip shroud with a leading edge comprising two scalloped faces and a trailing edge comprising a third scalloped face defining leading and trailing edge profiles substantially in accordance with Cartesian coordinate values of X and Y as points 1-41 set forth in Table I. The X and Y values are distances in inches which, when respective points are connected by smooth, continuing arcs define the leading and trailing edge tip shroud scalloped profiles. The tip shroud further has first and second, upper and lower, Z form edge profiles substantially in accordance with Cartesian coordinate values of X and Y as points 42-59 and 60-77, respectively of Table II.
REFERENCES:
patent: 6851931 (2005-02-01), Tomberg
patent: 6893216 (2005-05-01), Snook et al.
U.S. Application of Delong et al. U.S. Appl. No. 11/882,373, filed Aug. 1, 2007.
U.S. Application of Arness et al. U.S. Appl. No. 11/882,531, filed Aug. 2, 2007.
Barua Samar
Chan Sze Bun Brian
Chiurato Tony
Perry, II Jacob Charles
Raica Bogdan Razvan
Eastman Aaron R
General Electric Company
Look Edward
Nixon & Vanderhye PC
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