Patent ID: 6508145
Filing Date: 2003-01-21
Classification: B32B,F16F,H02K,Y02E,Y10T

Abstract:
A flywheel rotor, comprisinga flywheel hub having an axis of rotation and a tapered outer surface; a flywheel rim having an axis of rotation coinciding with said hub axis of rotation, and having an inner surface facing radially inward and having an outer surface facing radially outward; said rings have faying surfaces, in contact with a surface of said hub or another ring, that are tapered, and all taper angles are aligned in the same direction, with small inside diameters of said rings and said hub at the top of the rotor when it spins about a vertical axis; said flywheel rim consisting of at least two rings axially press-fit together to precompress said rings radially to form a composite flywheel rim.