A core is capable of being utilized within a conduit in a push-pull type remote control cable assembly. The core has a metallic wire member and includes a coating around the wire member which has an outer layer of TFE resin. An inner layer of the coating includes FEP resin which is bonded to the wire...http://www.google.se/patents/US4193319?utm_source=gb-gplus-sharePatent US4193319 - Push-pull cable core with self-lubricating coating
