Patent ID: 6212973
Filing Date: 2001-04-10
Classification: F16F,G11B,Y10T

Abstract:
A self-compensating balancer, comprising:a rotatable body rotating by a driving source, said rotatable body disposed to revolve around an axis passing through a center of said rotatable body;a case centered on said axis, formed on said rotatable body, having a hollow circular race; anda number of rigid bodies contained within said race, said rigid bodies having mutual relations of mass, diameter and rotational speed of said rotatable body as follows: ##EQU2##when n=an odd number, or ##EQU3##when n=an even numberwherein n=number of said rigid bodies, k=an integer, m=mass of each of said rigid bodies, M=total mass of said rigid bodies, .theta..sub.e =an angle between two radial lines intersecting said axis and neighboring rigid bodies.