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US 2003/0068488 A1Published application
Non-asbestos friction material
OwnerKazuo Tsugawa, Kaoru Tosakainventors
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Abstract
A non-asbestos friction material is made of a molded and cured composition comprising a fibrous base other than asbestos, a binder and a filler. The filler includes spheres or beads of glass having a Vickers hardness (DPH, 300 gf) of at most 800 kg/mm2. Friction materials thus constituted have a suitable friction coefficient, facilitate rust removal from the mating surface, and minimize noise generation and mating surface attack.
Claims4
A non-asbestos friction material made by molding and curing a composition comprising a fibrous base other than asbestos, a binder and a filler;
- wherein the filler includes spheres or beads of glass having a Vickers hardness (DPH, 300 gf) of at most 800 kg/mm2.
Dependencies are inferred from the claim text.