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US 6,635,349 B2Granted
Friction material for brake
AssigneesAkebono Brake Industry Co., Ltd., Akebono Research and Development Centre Ltd.
InventorsTakao Horiya, Osao Ogiwara, Masanori Kato
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Abstract
The present invention provides a friction material for brake not containing materials including heavy metals such as Cu or antimony. The friction material contains a fibrous component, a binding component and a friction modifying component, wherein magnesium oxide (MgO) and graphite are contained in a friction material in the amount of 45 to 80 vol %, and volume ratio (MgO/graphite) of magnesium oxide (MgO) to graphite is 1/1 to 4/1.
Claims4
A friction material for brake, comprising:
- a fibrous component;
- a binding component;
- and
- a friction modifying component,
- wherein magnesium oxide (MgO) and graphite are contained in said friction material in the amount of 45 to 80 vol %,
- wherein the volume ratio (MgO/graphite)of magnesium oxide (MgO) to graphite is 1/1 to 4/1, and wherein the average diameter of MgO particles is in a range between 50 μm and 200 μm.
3 more elements
Dependencies are inferred from the claim text.