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US 6,190,761 B1Granted
Friction material
AssigneeAkebono Brake Industry Co., Ltd.
InventorsYosuke Sasaki, Michinori Yanagi
Life of this patent
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Abstract
A friction material, including a fibrous reinforcement, a friction modifier, a lubricant and a binder, comprising a water-repellent fluoropolymer incorporated therein. The further incorporation of an alkaline metal salt makes it possible to render the matrix more hydrophilic and hence reduce creep noise. The foregoing fluoropolymer is one selected from the group consisting of ethylene tetrafluoride polymer, tetrafluoroethylene-hexafluoropropylene copolymer and polyvinylidene fluoride or a combination thereof.
Claims15
A friction material comprising:
- a base matrix wherein said base matrix comprises a fibrous reinforcement, a friction modifier, a lubricant, and a binder;
- and
- a water-repellent fluoropolymer, wherein said friction material is a solid.
Dependencies are inferred from the claim text.