Patent ID: 8853911

Claim:
A wedge for use in an electric machine comprising: a central leg extending in a direction that will be radially inward when the wedge is mounted on a lamination stack, and said wedge having arms extending in both circumferential directions from said central leg, with a circumferentially outermost part of said arms having a curved surface that will be radially outward, and a flat inner surface that will be radially inward when the wedge in mounted in the lamination stack; said flat inner surfaces of said circumferentially outermost part of said arms merging into a circumferentially more central portion of each said arm, with said circumferentially more central portion of said arms being at a non-parallel angle relative to said flat inner surface, and said angle being in a range of between 120 and 175 degrees; and said circumferentially outermost portion of said arms extending for a greater radial thickness than a portion of said arm spaced circumferentially towards said leg.