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. 13, 2023
Filed:
Nov. 30, 2017
Nippon Steel Corporation, Tokyo, JP;
Fine Sinter Co., Ltd., Kasugai, JP;
Manabu Kubota, Tokyo, JP;
Kazutaka Asabe, Tokyo, JP;
Yuki Ichikawa, Tokyo, JP;
Takeshi Nakano, Kasugai, JP;
Tokitake Okahira, Kasugai, JP;
Isao Shimazoe, Kasugai, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
FINE SINTER CO., LTD., Kasugai, JP;
Abstract
There is provided a sintered friction material for railway vehicles that has excellent frictional properties and wear resistance even in a high speed range of 280 km/hour or more. The sintered friction material for railway vehicles is a green compact sintered material containing, in mass %, Cu: 50.0 to 75.0%, graphite: 5.0 to 15.0%, one or more selected from the group consisting of magnesia, zircon sand, silica, zirconia, mullite, and silicon nitride: 1.5 to 15.0%, one or more selected from the group consisting of W and Mo: 3.0 to 30.0%, and one or more selected from the group consisting of ferrochromium, ferrotungsten, ferromolybdenum, and stainless steel: 2.0 to 20.0%, with the balance being impurities.