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:
May. 11, 2010
Filed:
Sep. 16, 2005
Applicants:
Yukihisa Tsumori, Kuwana, JP;
Yosuke Oya, Kuwana, JP;
Inventors:
Yukihisa Tsumori, Kuwana, JP;
Yosuke Oya, Kuwana, JP;
Assignee:
NTN Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/58 (2006.01);
U.S. Cl.
CPC ...
Abstract
A relief groove () is provided at a corner in which a track surface () and a flange surface () cross, in an inner ring () of a cylindrical roller bearing. A chamfer () is provided at a corner part in which a rolling surface () and an end surface () cross, in a cylindrical roller (). When it is assumed that the height of the chamfer () from the rolling surface () is 'h' and the curvature radius of the chamfer is 'R', the relation such that 1.0≦R/h≦1.5 is satisfied.