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US 2002/0053749 A1Published application
Method for producing a rail substructure
OwnerJorg Schwarzbichinventor
Life of this patent
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Abstract
A method for producing a rail substructure for railroad tracks, for which a rail bed (14) is concreted and dowels (18) are anchored positively in the concrete in order to fasten the rails, wherein the dowels (18) are inserted into the still deformable concrete during the concreting of the track bed (14).
Claims9
A method for producing a rail substructure for railroad tracks, for which a rail bed (14) is concreted and dowels (18;
- 18′) are anchored positively in the concrete in order to fasten the rails, wherein the dowels (18;
- 18′) are inserted into the still deformable concrete during the concreting of the track bed (14).
The method of one of the preceding claims, wherein the dowel 18′ is expanded after it is lowered into the track bed (14).
The method of one of the preceding claims, wherein the upper end of the dowel (18;
- 18′), after it is inserted in the track bed (14) is closed off by a removable sealing device (46).
Dependencies are inferred from the claim text.