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US 5,535,948 AGranted
Concrete grade crossing panels having integral elastomeric seals
AssigneeOmni Products, Inc.
InventorJack Williams
Life of this patent
Estimating the term…
Abstract
A rail grade crossing includes precast concrete panels which extend substantially between the roadway and the rails and between the rails. Elastomeric seals that are cast into the panels when they are formed fit between the panels and the rails. Because the seals are cast into the panels, the panels and seals are an integral unit which facilitates installation and removal of the panels.
Claims3
A railroad grade crossing for extending a paved roadway across a pair of parallel, spaced apart rails, comprising:
- (a) a concrete gauge panel that extends substantially between the rails and has a planar top surface that is coplanar with the roadway;
- (b) said gauge panel having elastomeric gauge seals on each side thereof which are adjacent to the rails when said gauge panel is located therebetween, said gauge seals having planar upper faces that are offset slightly downwardly from the top surface of said gauge panel, and recessed portions between said upper faces and the respective rail;
- (c) a pair of concrete field panels, one of which extends substantially between each rail and the roadway, having planar top surfaces that are coplanar with the roadway;
- (d) said field panels each having an elastomeric field seal on one side thereof, which is adjacent to the respective rail when said field panel is located between the rail and the roadway;
- wherein
- (e) said seals are cast into said panels to form integral panel/seal units, and each seal comprises a first face that is adjacent to the respective panel, an opposed second face that is adjacent to the respective rail, and a ledge that projects from said first face and is imbedded in the respective panel.
3 more elements
Dependencies are inferred from the claim text.