Friction devices

Claim 1

IN A FRICTION MECHANISM, A FRICTION COUPLE COMPRISING A PAIR OF ELEMENTS ADAPTED FOR RELATIVE ROTATIONAL MOVEMENT ON MOUNTING MEANS THEREFOR, A FIBER REINFORCED, HARDENED ORGANIC BINDER FRICTION COMPOSITION LINING OF RELATIVELY LOW HEAT CONDUCTIVITY SECURED TO AND SUPPORTED ON ONE ELEMENT OF SAID COUPLE, ANOTHER ELEMENT OF SAID COUPLE COMPRISING A METALLIC MATING MEMBER CARRYING ON A SURFACE THEREOF A FACING LAYER OF RELATIVELY HIGH HEAT CONDUCTIVE METAL MATERIAL HAVING DISPERSED THEREIN FINELY DIVIDED REFRACTORY INORGANIC, NON-METALLIC PARTICLES SELECTED FROM THE GROUP CONSISTING OF CRYSTALLINE ALUMINA, SILICON CARBIDE, ZIRCONIUM OXIDE, TUNGSTEN CARBIDE, TANTALUM CARBIDE, TITANIUM CARBIDE, BORON CARBIDE, CRYSTALLINE ALUMINUM SILICATES AND THORIUM OXIDE, AND HAVING A MOHS'' SCALE HARDNESS OF GREATER THAN 7 POSITIONED FOR FRICTIONAL ENGAGEMENT WITH THE SURFACE OF SAID LINING THE METALLIC MATERIAL IN SAID FACING BEING SELECTED FROM THE GROUP CONSISTING OF SILVER, COPPER AND ALLOYS OF SAID METALS HAVING A MELTING POINT OF AT LEAST 1500*F. AND A THERMAL CONDUCTIVITY AT LEAST 40% OF THAT OF PURE ELECTROLYTIC COPPER.