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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 11719138 B1

PDFFull Text
Date of Patent:
Aug. 08, 2023

Filed:

Apr. 27, 2021

Sintered alloy valve guide and method of producing sintered alloy valve guide

Applicant:

Tpr Co., Ltd., Tokyo, JP;

Inventors:

Fumiya Ito, Tokyo, JP;

Shohtaroh Hara, Tokyo, JP;

Assignee:

TPR Co., Ltd., Tokyo, JP;

Attorney:

Marshall, Gerstein & Borun LLP

Primary Examiner:

Jacob M Amick

Int. Cl.
CPC ...
F01L 3/08 (2006.01); B22F 3/26 (2006.01); B22F 5/10 (2006.01); B22F 7/00 (2006.01); B22F 3/16 (2006.01); B22F 3/24 (2006.01);
U.S. Cl.
CPC ...
F01L 3/08 (2013.01); B22F 3/16 (2013.01); B22F 3/26 (2013.01); B22F 5/106 (2013.01); B22F 7/002 (2013.01); B22F 2003/247 (2013.01); B22F 2201/02 (2013.01); B22F 2201/20 (2013.01); B22F 2301/10 (2013.01); B22F 2301/35 (2013.01); B22F 2302/40 (2013.01); B22F 2998/10 (2013.01); F01L 2301/00 (2020.05);
Abstract

The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.

Find Patent Forward Citations

Ito, Fumiya. (2023). Sintered alloy valve guide and method of producing sintered alloy valve guide (U.S. Patent No. 11719138). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11719138

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

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