Patent ID: 6129186
Filing Date: 2000-10-10
Classification: F16F

Abstract:
A rotational dampening apparatus comprising:a cup-shaped housing member having a substantially planar annular end wall defining a first surface, a cylindrical side wall extending from the first surface of the annular end wall, and a plurality of first rib members disposed on the first surface in an orientation radiating from a central longitudinal axis defined by said cylindrical side wall; and,mounted for rotational movement in said cup-shaped housing member:i) a rotor member including a plurality of second rib members formed on a first surface of the rotor member, the plurality of second rib members being disposed on said first surface of the rotor member in an orientation radiating from said central longitudinal axis defined by said cylindrical side wall; and,ii) a dampening member compressed between a first surface of said rotor member and said first surface of the end wall for generating frictional dampening forces between said rotor member and said housing member as the rotor member rotates relative to the housing member.