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:
Dec. 01, 2015
Filed:
Sep. 02, 2011
Applicants:
Fuyuki Ito, Kuwana, JP;
Natsuhiko Mori, Kuwana, JP;
Inventors:
Fuyuki Ito, Kuwana, JP;
Natsuhiko Mori, Kuwana, JP;
Assignee:
NTN CORPORATION, Osaka-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 38/16 (2006.01); F16C 32/06 (2006.01); F16C 33/10 (2006.01); B22F 1/00 (2006.01); B22F 3/12 (2006.01); F16C 17/10 (2006.01);
U.S. Cl.
CPC ...
F16C 32/0629 (2013.01); C22C 38/16 (2013.01); F16C 33/104 (2013.01); B22F 1/0014 (2013.01); B22F 3/12 (2013.01); F16C 17/107 (2013.01); F16C 2204/10 (2013.01); F16C 2240/48 (2013.01);
Abstract
With use of a fine copper-based powder, specifically a copper-based powder that contains particles each having a diameter of 45 μm or less by 80 weight % or more, an air permeability can be significantly reduced. When this copper-based powder is used, a sintered metal can be easily formed to contain copper by 40% or less (contain iron by 60% or more) to enhance abrasion resistance, and to have an oil permeability of 1.00 g/10 min or less to increase an oil film formation rate.