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US 4,137,214 AGranted
Asbestos free friction compositions
AssigneeThiokol Corporation
InventorHenry A. Sochalski
Life of this patent
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Abstract
Friction compositions containing major proportions of non-fibrous inorganic compounds in place of asbestos are disclosed. The compositions are particularly useful in the preparation of automotive disc brake pads.
Claims18
A friction material, substantially free of asbestos, which comprises:
- (a) a thermosetting resin;
- (b) cashew nut particles;
- (c) from 5% to 15% of a non-asbestos fiber;
- and
- (d) more than 20% by weight of a powdered inorganic compound having a Moh's hardness rating of greater than 2.0 and less than 5.0 and capable of being subjected to temperatures of greater than about 425.degree. C. without substantial chemical or physical alteration.
2 more elements
Dependencies are inferred from the claim text.