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:
Apr. 26, 2016
Filed:
Jan. 28, 2014
Juergen Gegner, Forchheim, DE;
Wolfgang Nierlich, Schweinfurt, DE;
Armin Herbert Emil August Olschewski, Schweinfurt, DE;
Arno Stubenrauch, Aidhausen, DE;
Juergen Gegner, Forchheim, DE;
Wolfgang Nierlich, Schweinfurt, DE;
Armin Herbert Emil August Olschewski, Schweinfurt, DE;
Arno Stubenrauch, Aidhausen, DE;
AKTIEBOLAGET SKF, Gothenburg, SE;
Abstract
A rolling-element bearing includes an inner ring made of steel and having an inner-ring raceway, an outer ring having an outer ring raceway, and ceramic rolling elements which roll on the inner-ring raceway and on the outer-ring raceway. The inner ring has been subjected to a heat treatment to harden it. The heat treatment is concluded with the performance of a final heat-treatment step at a predetermined temperature. In the inner ring, compressive residual stresses are formed in an outer layer by cold working in the region of the inner-ring raceway. The inner ring also has been subjected to a bluing treatment.