Cementitious composite friction compositions
AssigneeCemcom Corporation
InventorsDavid D. Double, Randall P. Bright, Sean Wise
Life of this patent
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Abstract
Friction materials intended to be used as brake shoes, brake pads, and other brake components, comprising a composite in which one or more friction modifiers is embedded in a high strength cement matrix. The matrix material exhibits a flexural strength of at least 1,500 psi, a compressive strength of at least about 15,000 psi and a flexural modulus of about 1.times.10.sup.6 psi.
Claims10
In a friction composition comprising a hydraulic cement matrix and friction modifying substance, the improvements which comprise utilizing as the matrix a high strength hydraulic cement which when cured exhibits a compressive strength of at least 15,000 psi and a flexural strength of at least 1,500 psi, and utilizing as the friction modifying substance at least one of each of the following classes of materials:
- fibers, dry lubricants and fillers;
- which composition better retains its effectiveness at the temperatures encountered in normal service and permits more extended service use as compared with friction materials in which the matrix is a phenolic resin or a lower strength hydraulic cement.
Dependencies are inferred from the claim text.