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. 22, 2010
Filed:
Dec. 21, 2007
Applicants:
Takuya Kitami, Tokyo, JP;
Hiroshi Isobe, Tokyo, JP;
Inventors:
Takuya Kitami, Tokyo, JP;
Hiroshi Isobe, Tokyo, JP;
Assignee:
Akebono Brake Industry Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 3/14 (2006.01); C08J 5/14 (2006.01); F16D 69/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A non-asbestos friction material not containing a heavy metal and a heavy metallic compound as the blending ingredients of the friction material is provided with graphite and coke in total from 5 to 25 vol % in volume of friction material. A volume ratio of the graphite/coke is preferably from 2/1 to 7/1. An average particle size of the coke is preferably from 150 to 400 μm.