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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.:

US 8844903 B1

PDFFull Text
Expired
Date of Patent:
Sep. 30, 2014

Filed:

Feb. 21, 2011

Valve seat

Applicants:

Rintarou Takahashi, Kumagaya, JP;

Hiroji Henmi, Kumagaya, JP;

Inventors:

Rintarou Takahashi, Kumagaya, JP;

Hiroji Henmi, Kumagaya, JP;

Assignee:

Kabushiki Kaisha Riken, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

John K Fristoe, Jr

Assistant Examiner:

Kevin E Lynn

Int. Cl.
CPC ...
F16K 25/00 (2006.01); C22C 33/02 (2006.01); C22C 38/12 (2006.01); F01L 3/02 (2006.01); C22C 38/02 (2006.01); F01L 3/22 (2006.01); C22C 27/04 (2006.01); C22C 38/16 (2006.01); B22F 1/00 (2006.01);
U.S. Cl.
CPC ...
F01L 3/02 (2013.01); F01L 2101/00 (2013.01); C22C 33/02 (2013.01); C22C 38/12 (2013.01); B22F 2001/0066 (2013.01); F01L 2103/00 (2013.01); C22C 38/02 (2013.01); F01L 3/22 (2013.01); C22C 27/04 (2013.01); C22C 38/16 (2013.01);
Abstract

In a valve seat made of an iron-based, composite sintered alloy having hard particles and a solid lubricant dispersed therein to have high wear resistance and good machinability, which is usable in high-power fuel direct injection engines with improved fuel efficiency and low emission, relatively coarse solid lubricant particles in such an amount as not to drastically reduce the strength of a sintered body are dispersed to provide self-lubrication, and as fine solid lubricant particles as not hindering the bonding of matrix particles are dispersed to improve machinability.

Find Patent Forward Citations

Takahashi, Rintarou. (2014). Valve seat (U.S. Patent No. 8844903). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8844903

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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