Molded plastic pulley with heat conducting metal lining

Claim 1

IN A VARAIBLE DIAMETER SHEAVE ASSEMBLY FOR USE IN POWER TRANSMISSION BY A FLEXIBLE V-BELT, A PAIR OF COMPANION DRIVE MEMBERS FOR RECEIVING BETWEEN THEM AND ENGAGING THE OPPOSITE SIDES OF A V-BELT, EACH DRIVE MEMBER COMPRISING HUB MEANS AND RADICAL DISC MEANS, SAID ASSEMBLY INCLUDING MEANS FOR MOUNTING SAID MEMBERS ON A SHAFT WITH THEIR DISC MEANS CONFRONTING FOR ROTATION IN UNISON ABOUT A COMMON AXIS AND FOR RELATIVE AXIAL MOVEMENT TOWARD AND AWAY FROM ONE ANOTHER IN CHANGING THE EFFECTIVE DIAMETER AT WHICH A GIVEN BELT IS ENGAGED BY THE ASSEMBLY, AT LEAST ONE OF SAID MEMBERS COMPRISING A ONE PIECE MOLDED PLASTIC BODY IN WHICH THE DISC MEANS THEREOF PROJECTS RADIALLY OUTWARDLY FROM THE HUB MEANS AND HAS AN OUTER PERIPHERY CONCENTRIC TO SAID AXIS, A LINER OF SHEAT METAL HAVING HIGH HEAT CONDUCTIVITY RELATIVE TO THE PLASTIC BODY ON AND WHOLLY SUPPORTED BY THE LATTER, SAID LINER HAVING AN OUTER PERIPHERY AT THE PERIPHERY OF THE DISC MEANS AND AN INNER PERIPHERY COMPRISING FLANGE MEANS INCLUDING ELEMENTS LYING ALONG LINES WHICH ARE OBLIQUE TO AND INTERSECT SAID AXIS, SAID OBLIQUE ELEMENTS OF THE INNER PERIPHERY HAVING A MECHANICAL INTERLOCK WITH THE PLASTIC BODY SECURING THE LINER TO THE PLASTIC BODY AND PREVENTING AXIAL SEPARATION, SAID LINER HAVING A CONICAL FRICTION SURFACE DISPOSED IN SPACED CONFRONTING RELATION TO THE COMPANION DRIVE MEMBER FOR DIRECT ENGAGEMENT BY A BELT RECEIVED BETWEEN THE MEMBERS, AND THE RADICAL EXTENT TO THE LINER SURFACE BEING SEVERAL TIMES GREATER THAN THE RADICAL EXTENT OF THE AREA OF ENGAGEMENT BETWEEN THE LINER AND A BELT ENGAGED BETWEEN THE DRIVE MEMBERS FOR RADICAL TRANSMISSION BY CONDUCTIVITY AND DISSIPATION OF HEAT GENERATED AT THE LINER SURFACE BY SAID ENGAGEMENT.