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:
Jan. 07, 2020
Filed:
Sep. 05, 2018
Aktiebolaget Skf, Gothenburg, SE;
Guillermo Enrique Morales Espejel, Ijsselstein, NL;
Rudolf Hauleitner, Steyr, AT;
Aidan Kerrigan, Utrecht, NL;
AKTIEBOLAGET SKF, Göteborg, SE;
Abstract
A Hybrid ball bearing including an outer raceway, an inner raceway, and a plurality of balls arranged between the inner raceway and the outer raceway. The outer raceway and the inner raceway are made from bearing steel and have a first surface RMS roughness R. At least one ball of the plurality of balls is made from a ceramic material and has a second surface RMS roughness R. In a mint condition, the roughness of the raceways Ris 2 to 5 times higher than the roughness Rof the at least one ball, as well as a refrigerant compressor comprising such a hybrid ball bearing.