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US 4,323,401 AGranted
Bearing having an array of microasperities
AssigneeCaterpillar Tractor Co.
InventorsWilliam H. Belke, Joseph C. Hafele, Ernest W. Landen, Thomas J. Richards
Life of this patent
Estimating the term…
Abstract
A bearing having a generally flat planer surface of pearlite, and an array of microasperities of martensite on the planer surface, each microasperity including a gently sloping front surface in relation to the direction of movement of the bearing and a sharply sloping rear surface in relation to such direction of movement. A pulsed laser beam or other heat source is focussed on the bearing to produce the array with microasperities of controlled size and shape.
Claims6
A bearing, comprising:
- (a) a generally planar surface;
- and
- (b) an array of microasperities on said planar surface, each of said microasperities having a gently sloping front surface, and a sharply sloping rear surface.
Dependencies are inferred from the claim text.