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| Number | Title | Issue Date |
| 7314182 | Extruded railroad tie for use with steel tie An extruded railroad tie comprising a bottom, a first side and a second side essentially opposite each other and extending from opposite ends of the bottom and a top surface shaped to receive and support the bottom of a steel tie. The extruded tie is useful for supp... | 01/01/2008 |
| 6959877 | Cross-tie for railroad rail assembly and method of manufacturing the same A cross-tie for a railroad rail assembly and a method of manufacturing the same, wherein the cross-tie includes a plurality of recycled tire treads stacked along one of the width and height dimensions of the cross-tie, and secured to one another via an interposed ad... | 11/01/2005 |
| 6824070 | Cross-tie for railroad rail assembly and method of manufacturing the same A cross-tie for a railroad rail assembly and a method of manufacturing the same, wherein the cross-tie includes a plurality of recycled tire treads stacked along one of the width and height dimensions of the cross-tie, and secured to one another via an interposed ad... | 11/30/2004 |
| 6708896 | Method and apparatus for a railroad crosstie made from used tires A method and apparatus for a railroad crosstie made from used tires. The tires are cut radially and the sidewalls are removed. Longitudinal and lateral cuts along the inner surface are preferably made to facilitate flattening. Opposing inner surfaces are joined as s... | 03/23/2004 |
| 6659362 | Composite railroad ties with optional integral conduit Railroad ties may be refurbished or have their usable life extended by overwrapping with fibrous reinforcement containing a cured matrix associated with the fibers. The ties may be machined prior to overwrapping, and are preferably sawn along their length... | 12/09/2003 |
| 5996901 | Railroad crosstie A plurality of elongated, substantially planar, elastomeric members are assembled together in a stack such that the members are generally aligned with each other. The members are made of tire treads. An elongated, substantially planar, rigid first plate i... | 12/07/1999 |
| 4286753 | Combination wood plastic railroad tie A combination railroad tie for supporting railroad track rails on a ballast or concrete roadbed. The main body portion of the tie is wood, having a rectangular cross section and a flat upper and lower surface. A plurality of flat plastic plies made of shr... | 09/01/1981 |
| 4105159 | Composite railroad tie A composite railroad tie of structurally distinct components adhesively joined in layers to form a unit. At least one of the components being of high density phenolformaldehyde bonded particleboard manufactured in a platen press with heat. At least two el... | 08/08/1978 |
| 3943818 | Railroad tie An improved railroad tie member is formed of two wooden half-ties which are secured together with one or more reverse threaded bolts arranged in parallel with the tracks. The bolts are preferably inserted in the tie halves whereby the bolts may be turned ... | 03/16/1976 |
