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 7297728 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 20, 2007

Filed:

Jul. 01, 2004
Applicants:

Kazuhide Yamamoto, Gunma-ken, JP;

Yasuki Hattori, Gunma-ken, JP;

Inventors:

Kazuhide Yamamoto, Gunma-ken, JP;

Yasuki Hattori, Gunma-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

A friction material is made by molding and curing a composition containing a fibrous base that includes stainless steel fibers but not other steel fibers, a binder, and a friction modifier that includes at least two types of hard particles having a large Mohs hardness, bronze powder and a specific amount of tin sulfide. The friction material has a excellent balance of properties, including a high strain linearity that provides a excellent brake feel, a high torque linearity and a excellent effectiveness, and also minimizes disc rotor attack, disc pad wear and metal pickup. Such friction materials are particularly suitable for automotive applications, such as disc pads.


Find Patent Forward Citations

Yamamoto, Kazuhide. (2007). Friction material (U.S. Patent No. 7297728). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7297728

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