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:
Sep. 19, 2017
Filed:
Jan. 16, 2013
Japan Brake Industrial Co., Ltd., Hachioji-shi, Tokyo, JP;
Takehiko Ikeda, Hachioji, JP;
Takenori Abe, Hachioji, JP;
Yasuhiro Hara, Mito, JP;
Hiroshi Nishie, Oyama, JP;
Kohta Nukumizu, Hachioji, JP;
JAPAN BRAKE INDUSTRIAL CO., LTD., Tokyo, JP;
Abstract
Using a friction material composition comprising: a fiber; a friction adjusting material; a binding material; and an uncrosslinked rubber being solid at normal temperature (25° C.), a friction material is obtained, wherein an ambient compressibility in a piston-pressing direction is 2% or less at normal temperature (25° C.) and at 4 MPa, and a tan δ value in a sliding direction at −20° C. to 50° C. is 0.05 or larger. Thereby, a friction material which has high damping properties and acceptable brake noise, which can prevent a decrease in responsiveness when brakes are applied, and prevent a decrease in the feeling of effectiveness associated therewith, and which can suppress a decrease in the fuel efficiency and an increase in abrasion caused by the dragging occurring when the friction material is brought into contact with a brake rotor; and a method for producing the friction material, can be provided.