A carbon fiber composite material ( 10 ) is provided which includes carbon fibers ( 11 ), a matrix ( 12 ) binding the carbon fibers ( 11 ) together, and pores ( 13 ), and a volume fraction of the carbon fibers ( 11 ) exclusive of the pores ( 13 ) is not less than 45% and up to 80%. The carbon fiber composite material ( 10 ) may preferably have a porous structure of which a porosity is not more than 20% and up to 70%. This carbon fiber composite material ( 10 ) has a high static friction coefficient (Î¼S), and low Î¼ ratio, and thus is suitable for a wet friction member (e.g., carbon disc 5 ) which is excellent in both of static friction performance and dynamic friction performance.

Claims

6 · 5 independent · depth 2

6 granted claims

›1.independentA disk-shaped wet friction member including a carbon fiber composite material comprising:ncarbon fibers;a matrix binding the carbon fibers together; a…+1

›3.independentA wet friction member having a carbon fiber composite material comprising:ncarbon fibers;a matrix binding the carbon fibers together; andpores,wherein…

›4.independentA wet friction member having a carbon fiber composite material comprising:ncarbon fibers;a matrix binding the carbon fibers together; andpores,wherein…

›5.independentA wet friction member having a carbon fiber composite material comprising:ncarbon fibers;a matrix binding the carbon fibers together; andpores,wherein…

›6.independentA disk-shaped wet friction member including a carbon fiber composite material comprising:ncarbon fibers;a matrix binding the carbon fibers together; a…

Classifications

4 codes

IPC · International Patent Classification

Section B — Performing operations; transporting

B32B17/12

Section F — Mechanical engineering; lighting; heating; weapons

F16D69/02

USPC · US Patent Classification

428/66.2192/107.M

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Pendency

4.8 y

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Alexander Thomas

art unit 1783 · TC 1700

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Type	Document	Date
related publication	US 20070298211 A1	27 Dec 2007

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