Friction material compositions and additives
View Patent ↗The claimed invention involves a novel composition of matter comprising a mixture of Fe—Mo Intermetallic and copper oxide. A novel composition of matter of Fe—Mo Intermetallic, copper oxide and calcium carbonate is also claimed. The claimed invention also involves a novel friction lining additive comprising Fe—Mo Intermetallic and copper oxide for improved braking effectiveness. Fe—Mo Intermetallic, copper oxide and calcium carbonate may also be used as a friction lining additive according to the present invention. The claimed invention also includes a novel motor brush comprising Fe—Mo Intermetallic and copper oxide for improved wear. Fe—Mo Intermetallic, copper oxide and calcium carbonate may also be used as a motor brush additive according to the present invention.
1. A motor brush comprising a lubricant and an additive comprising Fe—Mo Intermetallic and copper oxide.
2. The motor brush of claim 1 , wherein said additive further comprises calcium carbonate.
3. The motor brush of claim 1 wherein said lubricant comprises carbonaceous material.
4. The motor brush of claim 1 , wherein said additive of Fe—Mo Intermetallic and copper oxide comprises about 60 to about 99 weight percent Fe—Mo Intermetallic and about 1 to about 40 weight percent copper oxide.
5. The motor brush of claim 1 wherein said additive of Fe—Mo Intermetallic and copper oxide comprises about 90 to about 99 weight percent Fe—Mo Intermetallic and the remainder copper oxide.
6. The motor brush of claim 1 wherein said motor brush comprises between about 1 and about 10 total weight percent additive.
7. The motor brush of claim 1 , wherein said additive comprises particles, said particles ranging in size from about 2 μm to about 200 μm.
8. The motor brush of claim 2 wherein said additive comprises about 50 to about 99 weight percent Fe—Mo Intermetallic, about 1 to about 50 weight percent copper oxide and about 1 to about 10 percent weight percent calcium carbonate.
9. The motor brush of claim 2 wherein the motor brush comprises between about 1 and about 10 total weight percent additive.
10. The motor brush of claim 2 , wherein said additive comprises particles, said particles ranging in size from about 2 μm to about 200 μm.