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:
Jul. 03, 2013
Applicant:
Kabushiki Kaisha Riken, Tokyo, JP;
Inventors:
Kimiaki Hashimoto, Kumagaya, JP;
Hiroji Henmi, Kumagaya, JP;
Assignee:
KABUSHIKI KAISHA RIKEN, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/00 (2006.01); F01L 3/02 (2006.01); F16K 25/00 (2006.01); C22C 38/02 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/30 (2006.01); C22C 38/36 (2006.01); C21D 6/00 (2006.01); C22C 33/02 (2006.01); F01L 3/22 (2006.01); B22F 5/10 (2006.01);
U.S. Cl.
CPC ...
F01L 3/02 (2013.01); C21D 6/002 (2013.01); C22C 33/02 (2013.01); C22C 33/0285 (2013.01); C22C 38/00 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/30 (2013.01); C22C 38/36 (2013.01); F01L 3/22 (2013.01); F16K 25/005 (2013.01); B22F 5/106 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01);
Abstract
An iron-based sintered alloy valve seat having excellent wear resistance and machinability, which can be used for high-power diesel engines, an intermetallic compound having Vickers hardness Hv of 800-1200 is used, and C and P in the composition of the iron-based sintered valve seat are by mass 1.2-1.6% and 0.80-1.35%, respectively.