The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 1977
Filed:
Nov. 17, 1975
Applicant:
Inventors:
William H Belke, Peoria, IL (US);
Joseph C Hafele, Peoria, IL (US);
Ernest W Landen, Peoria, IL (US);
Thomas J Richards, Peoria, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C22C / ;
U.S. Cl.
CPC ...
148152 ; 148 39 ; 29 9 / ;
Abstract
A method and apparatus for producing microasperities for enhancing lubrication is provided. A pulsed laser beam or other heat source having high resolution with respect to time and space is focused onto a surface such as a thrust bearing surface to produce an array of microasperities of controlled size, shape and density. The staggered ramp shaped asperities produce an enhanced lubrication effect.