Abstract: A wear-resistant reinforced liner for a center plate structure of a railway vehicle and method of making same are provided wherein the liner is defined of a polymeric material and has a top surface adapted to engage a railway body center plate and a bottom surface adapted to engage a railway truck center plate with dual-purpose means embedded in the polymeric material which serves as a matrix therefor with the dual-purpose means having a top surface portion which comprises a top surface of the liner and a bottom surface portion which comprises a bottom surface of such liner; and, the dual-purpose means provides reinforcement for the liner and a comparatively low electrical resistance path through the liner with each surface portion in contact with an associated center plate.

Abstract: A wear-resistant liner for center plate structure of a railway vehicle is provided and such liner is defined by an ultra high molecular weight polymeric material having metal reinforcing means embedded in and surrounded by the polymeric material which serves as a matrix for the reinforcing means and the metal reinforcing means comprises a metal structure having openings therein for receiving the polymeric material completely therethrough and enabling better embedment of the metal structure with the metal structure providing reinforcement and preventing cold flow of the polymeric material, and with the metal structure being a grid-like structure.

Abstract: A vacuum hose assembly, method of making same, and vacuum cleaner using same are provided wherein the hose assembly has a chamber in at least one of a pair of hose connectors thereof wherein such chamber is readily opened and closed and a protective device is disposed within the chamber and electrically connected to the electrical circuit of the vacuum hose assembly and the device is sensitive to practically every type of fault capable of causing injury to humans and operates to interrupt the electrical circuit therethrough upon detection of a fault.

Abstract: A wear-resistant reinforced liner for a center plate structure of a railway vehicle is provided wherein the liner is defined of a polymeric matrix and has top and bottom surfaces adapted to engage railway members, the liner having dual-purpose means embedded in the matrix. This dual-purpose means provides reinforcement for the liner and is partially exposed at the top and bottom surfaces to form a comparatively low electrical resistance path through the liner with each surface portion in contact with the mating members of the vehicle.

Abstract: A wear-resistant liner for center plate structure of a railway vehicle is provided and such liner is defined by an ultra high molecular weight polymeric material having a reinforcement embedded in the polymeric material which serves as a matrix for and substantially completely surrounds the reinforcement and the reinforcement comprises a structure having openings therein for receiving the polymeric material completely therethrough and enabling better embedment of the structure, and such structure serves to reinforce and prevent cold flow of the polymeric material.