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:
Oct. 06, 2026
Filed:
May. 14, 2021
Nippon Steel Corporation, Tokyo, JP;
Takahiro Fujimoto, Tokyo, JP;
Yuiko Shiotani, Tokyo, JP;
Takanori Kato, Tokyo, JP;
Hiroshi Nogami, Tokyo, JP;
Yuki Ichikawa, Tokyo, JP;
Naruo Miyabe, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A disc brake device includes a rotary member, a brake disc, a control member, and a fastening member. The brake disc includes a disc body having an annular shape and a plurality of fins. The control member includes a base plate and a protruding portion, and controls an airflow rate between the fins disposed adjacent to each other. At least one of the fins has a fastening hole including a small diameter portion. The base plate has a through hole. A shaft portion of the fastening member is inserted through the small diameter portion and the through hole. A peripheral edge of the through hole is disposed on an outer circumferential side of a peripheral edge of the small diameter portion.