Patent ID: 6302585
Filing Date: 2001-10-16
Classification: F16C,H01L,Y10S,Y10T

Abstract:
A two-axis stage assembly comprising:a generally planar base plate;a stage plate generally parallel to said base plate, said stage plate defining a first axis and a second orthogonal axis;a plurality of spaced bearings depending from a bottom surface of said stage plate, said bearings each having an arcuate bottom surface in rocking contact with a facing support surface of said base plate;a coupling associated with each of said bearings and attached to said bottom surface of said stage plate and pivotably mounting the associated bearing, said coupling being positioned at the center of curvature of said arcuate bottom surface of the associated bearing; andwherein movement of said stage plate along said axes rocks each bearing arcuate bottom surface with respect to said facing support surface of said base plate.