Patent ID: 8018114

Claim:
A wedge for use in a generator rotor comprising: a wedge body having a generally triangular shape with flat surfaces, and such that when the wedge is placed in a generator rotor, the flat surfaces will define circumferential extents of the wedge body relative to a rotational axis of the rotor; said flat surfaces extending to a radially outermost extent of the wedge body; and the wedge body has an apex that is a flattened surface that will be at a tangent to the axis of the rotor, surfaces that will be the radially outermost surface of the wedge body when the wedge is mounted in a generator are curved about a circular arc relatively to the axis, the radially outermost surface of the wedge is formed with a plurality of grooves, the plurality of grooves extending for an axial length, and the radially outermost surface defining surfaces intermediate each of said grooves, with said surfaces extending for an axial length that is greater than the axial length of said grooves.