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:
Nov. 13, 2018
Filed:
Jul. 23, 2013
Applicants:
Yoshinori Ito, Aichi, JP;
Takahiro Gotou, Aichi, JP;
Inventors:
Yoshinori Ito, Aichi, JP;
Takahiro Gotou, Aichi, JP;
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 32/00 (2006.01); F16C 33/12 (2006.01); F16C 33/16 (2006.01); F16C 33/24 (2006.01); B22F 5/10 (2006.01); B22F 1/00 (2006.01); B22F 3/11 (2006.01); F16C 33/14 (2006.01); B22F 3/26 (2006.01); F16C 33/10 (2006.01); B22F 3/02 (2006.01);
U.S. Cl.
CPC ...
F16C 33/128 (2013.01); B22F 1/0003 (2013.01); B22F 1/0059 (2013.01); B22F 3/11 (2013.01); B22F 3/26 (2013.01); B22F 5/106 (2013.01); F16C 33/145 (2013.01); F16C 33/16 (2013.01); F16C 33/24 (2013.01); B22F 3/02 (2013.01); B22F 2998/10 (2013.01); F16C 33/104 (2013.01);
Abstract
Provided is a sintered bearing () obtained by molding raw material powders containing graphite powder and metal powder in a mold, followed by sintering, in which: the graphite powder to be used includes granulated graphite powder; and a ratio of free graphite in a bearing surface () of the sintered bearing is set to from 25% to 80% in terms of an area ratio. An average grain size of the granulated graphite powder is set to from 60 μm to 500 μm. A blending ratio of the granulated graphite powder in the raw material powders is set to from 3 wt % to 15 wt %.