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.

Date of Patent:
Jan. 11, 2011

Filed:

Nov. 02, 2005
Applicants:

Kentaro Komori, Saitama, JP;

Satoshi Yoshida, Saitama, JP;

Atsushi Takahashi, Saitama, JP;

Toshihiko Kaneiwa, Aichi, JP;

Inventors:

Kentaro Komori, Saitama, JP;

Satoshi Yoshida, Saitama, JP;

Atsushi Takahashi, Saitama, JP;

Toshihiko Kaneiwa, Aichi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 17/12 (2006.01); F16D 69/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A carbon fiber composite material () is provided which includes carbon fibers (), a matrix () binding the carbon fibers () together, and pores (), and a volume fraction of the carbon fibers () exclusive of the pores () is not less than 45% and up to 80%. The carbon fiber composite material () may preferably have a porous structure of which a porosity is not more than 20% and up to 70%. This carbon fiber composite material () has a high static friction coefficient (μS), and low μ ratio, and thus is suitable for a wet friction member (e.g., carbon disc) which is excellent in both of static friction performance and dynamic friction performance.


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