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:
Jun. 07, 2016
Filed:
Sep. 09, 2010
Applicants:
Goshi Iketaka, Tokyo, JP;
Shinichi Takahashi, Tokyo, JP;
Takayuki Hagita, Tokyo, JP;
Akinori Yoshioka, Tokyo, JP;
Takeshi Hirano, Tokyo, JP;
Inventors:
Goshi Iketaka, Tokyo, JP;
Shinichi Takahashi, Tokyo, JP;
Takayuki Hagita, Tokyo, JP;
Akinori Yoshioka, Tokyo, JP;
Takeshi Hirano, Tokyo, JP;
Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/24 (2006.01); F16C 19/46 (2006.01); F16C 33/34 (2006.01);
U.S. Cl.
CPC ...
F16C 19/46 (2013.01); F16C 33/34 (2013.01); F16C 2240/50 (2013.01); F16C 2360/42 (2013.01);
Abstract
In rollers used in a radial needle bearing, the circularity of crowning sections provided at opposite ends of each roller is 0.6 μm or smaller. This allows for reduction of sound (noise) produced when the radial needle bearing rotates by itself and can also allow for reduction of sound (noise) of a rotational machine when the radial needle bearing is installed and rotates therein.