Patent ID: 7497627
Filing Date: 2009-03-03
Classification: F16C

Abstract:
1. A hydrodynamic bearing set suitable for use in a housing having a first planar surface and a second opposed planar surface, the planar housing surfaces enclosing a thrust disk movable along and rotatable about an axis, the thrust disk having first and second axial bearing surfaces, said hydrodynamic bearing set comprising a first annular ring topfoil disposed adjacent the first axial bearing surface and removably secured to the housing; a first underspring removably secured between said first topfoil and the first planar housing surface; a second annular ring topfoil disposed adjacent the second axial bearing surface and removably secured to the housing; a second underspring removably secured between said second topfoil and the second planar housing surface; and a separation spring having a generally annular shape and further having an inside diameter larger than an outside diameter of the thrust disk, said spring in contact with both said first annular ring topfoil and said second annular ring topfoil such that said first annular ring topfoil is urged away from the first axial bearing surface and said second annular ring topfoil is urged away from the second axial bearing surface.