Abstract: A direct fixation fastener comprising: a top plate; a bottom plate made of metal structural channel providing two spaced-apart side walls, wherein the bottom plate has a first end and a second end and wherein each of the first and second ends terminate in a first flat edge section and a second flat edge section, respectively, without spaced-apart side walls; first and second angle bars, wherein the first angle bar is attached to the first flat edge section and the second angle bar is attached to the second flat edge section; and an elastomeric layer disposed between the top plate and the bottom plate, between the top plate and angle bars and between the angle bars and the spaced-apart side walls.

Abstract: A direct fixation fastener comprising: a top plate; a bottom plate made of metal structural channel providing two spaced-apart side walls, wherein the bottom plate has a first end and a second end and wherein each of the first and second ends terminate in a first flat edge section and a second flat edge section, respectively, without spaced-apart side walls; first and second angle bars, wherein the first angle bar is attached to the first flat edge section and the second angle bar is attached to the second flat edge section; and an elastomeric layer disposed between the top plate and the bottom plate, between the top plate and angle bars and between the angle bars and the spaced-apart side walls.

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: 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.