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. 18, 2011
Filed:
Aug. 16, 2006
Hiroyuki Ohshima, Kashihara, JP;
Kazutoshi Toda, Tondabayashi, JP;
Hiroki Matsuyama, Nara, JP;
Kouji Kawaguchi, Izumi, JP;
Naoki Masuda, Nara, JP;
Hiroyuki Ohshima, Kashihara, JP;
Kazutoshi Toda, Tondabayashi, JP;
Hiroki Matsuyama, Nara, JP;
Kouji Kawaguchi, Izumi, JP;
Naoki Masuda, Nara, JP;
JTEKT Corporation, Osaka-shi, Osaka, JP;
Abstract
In a tapered roller bearing, LWR/DW is in the range of 1.1 to 1.7 where LWR represents a roller effective length of tapered rollers and DW represents a roller mean diameter of tapered rollers. RCO/LRO is 30 to 150, and RCI/LRI is 50 to 260 where RCO represents a crowning radius of an outer ring, LRO represents a raceway length of the outer ring, RCI represents a crowning radius of an inner ring and LRI represents a raceway length of the inner ring. The following expressions are satisfied: 20°≦α≦30°, and α−0.87γ−0.334≦BK≦α−0.87γ−0.167, where α represents a raceway angle of the outer ring, γ represents a roller angle of the tapered rollers, and BK represents a rib angle of a large rib portion of the inner ring.