Direct fixation fastener
AssigneeL. B. Foster Company
InventorsRobert L. Alsop, Arka Prabha Roy, Michael Patrick O'Connell
Life of this patent
Estimating the term…
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.
Claims16
A bonded, direct fixation fastener as supportive structure for a rail on a railroad bed comprising:
- a rectangular rail plate, wherein the rail plate has a generally horizontal and rectangular center portion having a lower face and an upper face and first and second opposed sides and wherein the rail plate defines an outer perimeter having a face defining a first angle to the railroad bed, the rail plate having first and second attachment means to attach to the rail, wherein the first attachment means is centered on the first side of the generally horizontal and rectangular center portion and the second attachment means is centered on the second side of the generally horizontal and rectangular center portion;
- a rectangular bottom member defines an inner perimeter having a face defining a second angle to the railroad bed;
- and
- a 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.
Dependencies are inferred from the claim text.