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:
Oct. 23, 2018
Filed:
Jun. 03, 2014
Applicants:
Ntn Corporation, Osaka, JP;
Takahiro Okuno, Mie, JP;
Naoki Yashiro, Mie, JP;
Kouya Oohira, Mie, JP;
Inventors:
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 33/02 (2006.01); F16H 55/06 (2006.01); B22F 1/00 (2006.01); B22F 5/08 (2006.01); C22C 38/00 (2006.01); B22F 3/16 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); F16H 53/02 (2006.01); F16H 55/17 (2006.01); B22F 3/02 (2006.01);
U.S. Cl.
CPC ...
F16H 55/06 (2013.01); B22F 1/00 (2013.01); B22F 1/007 (2013.01); B22F 1/0059 (2013.01); B22F 3/16 (2013.01); B22F 5/08 (2013.01); C22C 33/0264 (2013.01); C22C 38/00 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); F16H 53/025 (2013.01); F16H 55/17 (2013.01); B22F 2003/026 (2013.01); B22F 2301/35 (2013.01); B22F 2302/40 (2013.01); B22F 2304/10 (2013.01); B22F 2998/10 (2013.01);
Abstract
A sintered compact having a density of 7.5 g/cmor more is formed by mixed powder. The mixed powder is obtained by mixing graphite powder having an average particle diameter of 8 μm or less and diffusion alloyed steel powder. The ratio of the graphite powder is from 0.05 wt % to 0.35 wt % with respect to 100 wt % of the diffusion alloyed steel powder. Or, the mixed powder is obtained by mixing the graphite powder and completely alloyed steel powder. The ratio of the graphite powder is from 0.15 wt % to 0.35 wt % with respect to 100 wt % of the completely alloyed steel powder.