Patent ID: 6123460
Filing Date: 2000-09-26
Classification: F16C,G02B

Abstract:
A hydrodynamic gas bearing structure comprising:a hollow cylindrical bearing body (2) having an inner peripheral surface; anda columnar shaft body (1) that has an outer peripheral surface extending substantially cylindrically about a shaft body axis, and that is arranged at least partially within said hollow cylindrical bearing body so that at least a portion of said outer peripheral surface is opposed to at least a portion of said inner peripheral surface with a radial clearance therebetween;wherein:said shaft body has at least one groove (11) extending parallel to said shaft body axis in said outer peripheral surface (Q);said groove has a peripheral contour (S) having a first edge (16) and a second edge (17) opposite one another respectively where said peripheral contour (S) adjoins said outer peripheral surface (Q), and having a deepest point (14) at which said peripheral contour is farthest from said outer peripheral surface and closest to said shaft body axis; andsaid peripheral contour (S) is asymmetrical in a circumferential direction about said shaft body axis, such that said deepest point (14) is circumferentially closer to said second edge (17) than to said first edge (16).