Patent ID: 7090057

Claim:
A friction disk for a brake assembly comprising: an annular structural core having a first sinusoidally-shaped mounting surface and a second sinusoidally-shaped mounting surface; a first frictional lining disk having an annular and sinusoidally-shaped mounting surface and a relatively, flat wear surface on an opposite side of said first frictional lining disk from said sinusoidally-shaped mounting surface of said first frictional lining disk, said mounting surface of said first frictional lining disk matingly and directly engaging said first mounting surface of said structural core; and a second frictional lining disk having an annular and sinusoidally-shaped mounting surface and a relatively, flat wear surface on an opposite side of said second frictional lining disk from said sinusoidally-shaped mounting surface of said second frictional lining disk, said mounting surface of said second frictional lining disk matingly and directly engaging said second mounting surface of said structural core.