Abstract: An end post (30) for a rail joint assembly comprising: a top portion (12) consisting essentially of a first electrically insulating material comprising a fiber reinforced polymer material and having a profile substantially identical to cross-sectional shapes of rail head sections of first and second rails of the rail joint assembly; a base (16) having a profile substantially identical to cross-sectional shapes of rail base sections of first and second rails of the rail joint assembly; and a stem (14) disposed between the top portion (12) and the base (16); wherein the stem (14) and the base (16) consist essentially of a second electrically insulating material comprising a polymer material.

Abstract: A bonded, direct fixation fastener as supportive structure for a rail on a railroad bed comprising: a substantially rectangular rail plate, wherein the rail plate has a generally horizontal center portion having a lower face and an upper face and wherein the rail plate defines an outer perimeter having a face defining a first angle to the railroad bed, the rail plate having attachment means to attach to the rail; a substantially rectangular bottom member defines an inner perimeter having a face defining a second angle to the railroad bed; and a substantially rectangular elastomeric portion disposed between, and bonded to each of, the outer perimeter and face of the rail plate and the inner perimeter and face of the bottom member.

Abstract: An end post (30) for a rail joint assembly comprising: a top portion (12) consisting essentially of a first electrically insulating material comprising a fiber reinforced polymer material and having a profile substantially identical to cross-sectional shapes of rail head sections of first and second rails of the rail joint assembly; a base (16) having a profile substantially identical to cross-sectional shapes of rail base sections of first and second rails of the rail joint assembly; and a stem (14) disposed between the top portion (12) and the base (16); wherein the stem (14) and the base (16) consist essentially of a second electrically insulating material comprising a polymer material.

Abstract: A bonded, direct fixation fastener as supportive structure for a rail on a railroad bed comprising: a substantially rectangular rail plate, wherein the rail plate has a generally horizontal center portion having a lower face and an upper face and wherein the rail plate defines an outer perimeter having a face defining a first angle to the railroad bed, the rail plate having attachment means to attach to the rail; a substantially rectangular bottom member defines an inner perimeter having a face defining a second angle to the railroad bed; and a substantially rectangular elastomeric portion disposed between, and bonded to each of, the outer perimeter and face of the rail plate and the inner perimeter and face of the bottom member.