Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part
Reexamination Certificate
2005-05-10
2005-05-10
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between blade edge and static part
C277S415000
Reexamination Certificate
active
06890150
ABSTRACT:
A turbine bucket includes an airfoil having a tip shroud, a shank and an entry dovetail; a tip shroud seal projecting radially outwardly from the tip shroud and extending continuously between end edges of the tip shroud in a direction of rotation of the airfoil about a turbine axis; a cutter tooth carried by the tip shroud seal for enlarging a groove in an opposing fixed shroud, the cutter tooth having a center point located with reference to X, Y and Z axes, where the X-axis extends axially in an exhaust flow direction; the Y-axis extends in a direction of rotation of the turbine bucket; and the Z-axis extends radially through the intersection of the X and Y axes; wherein the center point is located about ½ inch along the Y-axis from the X=0 position, and wherein the Z-axis is located 0.517 inches from an outside edge of a seal pin extending along said entry dovetail, as measured in a direction normal to the shank of the bucket.
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Look Edward K.
McAleenan James M.
Nixon & Vanderhye P.C.
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