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| Number | Title | Issue Date |
| 7950592 | Wholly wrapped railroad crosstie and its manufacturing method A wholly wrapped railroad crosstie comprises an inner core and an outer casing that is made of deformable composite materials. The outer casing is molten and integrally united with and attached to the inner core as a whole when it is formed. The outer casing complet... | 05/31/2011 |
| 7942342 | Railway tie of non-homogeneous cross section useful in environments deleterious to timber A railroad tie comprises a core comprising wood or a wood product, and a first sleeve encapsulating the core, wherein the first sleeve comprises at least one of the group consisting of plastic, plastic-composite, or non-plastic polymers. A second sleeve may addition... | 05/17/2011 |
| 7802736 | Railway ground crosstie An elongate railway crosstie for supporting rail tracks on a bed of stones or the like, said tie having a first end, a second end, a length between said first and second ends and a top surface, a bottom surface and a pair of side surfaces between said first and seco... | 09/28/2010 |
| 7331533 | Thermoplastic railroad cross-ties A process is provided for making thermoplastic-composites from recycled thermoplastics (polyolefins) together with phosphogypsum waste by-product from the phosphate fertilizer wet process or, in an equally preferred embodiment with fluorogypsum waste by-product from... | 02/19/2008 |
| 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 |
| 7172136 | Structural members fabricated from waste materials and method of making the same The structural member and fabrication thereof may be formed by mixing wood products chemically treated for durability and thermoplastics products. The fabrication process may included processing the products to a desired particle size; mixing the particles; processi... | 02/06/2007 |
| 7156319 | Concrete railroad tie with guide plates for the rail base A concrete railroad tie, especially a two-block railroad tie, with an elastic rail support for ballast and solid tracks, with guide plates with twisting-prevention devices disposed in the supporting region between the base of the rail and the lateral, raised shoulde... | 01/02/2007 |
| 7011253 | Engineered railroad ties To increase the resistance of plastic and/or plastic composite railroad ties tosliding within the ballast of the railroad bed, for example, sliding lengthwise (in the direction of the longitudinal axis of the tie) and sideways (in the direction perpendicular to the ... | 03/14/2006 |
| 6766963 | Recycled rubber railroad crossties A method for the manufacture of a railroad crosstie (90) from recycled rubber is disclosed. The rubber crosstie (90) has an expected life of between 30 to 60 years and can be made primarily of rubber crumbs obtained from stockpiles of discarded rubber ... | 07/27/2004 |
| 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 |
| 6247651 | Composite railway crosstie, shaped like an I beam A railway crosstie is adapted for use in a track system having a pair of rails supported on longitudinally spaced crossties. The railway crosstie includes an I-beam member made of a combination of recycled materials.... | 06/19/2001 |
| 6191228 | Use of recycled plastics for preparing high performance composite railroad ties A method of maintaining proper distance between railroad rails is disclosed. The method utilizes railroad ties manufactured from a composite of polystyrene and polyolefin components, preferably obtained from recycled plastics. The composite exhibits a dua... | 02/20/2001 |
| 6070806 | Sleeper The sleeper (tie) comprises a body which has a variable cross section along its length and is made from reinforced polymer concrete with a dispersed reinforcement in the form of steel or synthetic fibres or both the one and the other together, which fibre... | 06/06/2000 |
| 6021958 | Synthetic railroad tie A synthetic railroad tie is provided including a plurality of solid ties each constructed from plastic and having a rectangular configuration. A pair of rails are each situated over the ties in perpendicular relationship therewith and residing adjacent on... | 02/08/2000 |
| 5916932 | Composite building materials from recyclable waste A composite building material is disclosed produced from recycled materials. The composite building material is composed of an extruded mixture of high density polyethylene and a thermoplastic coated fiber material such as fiberglass. The resulting materi... | 06/29/1999 |
| 5826791 | Process for manufacturing a railroad rail support A railroad rail support includes a first and second horizontally oriented rubber tire having a circumferential tread, a top sidewall including a top rim bead and a bottom sidewall having a bottom rim bead, said bottom sidewall and bottom rim bead being ad... | 10/27/1998 |
| 5799870 | Thermoplastic railroad tie A composite railroad tie is provided comprising a phosphogypsum filler and a thermoplastic resin. The composite exhibits desirable physical properties for railroad ties. Suitable sources for phospho-gypsum include fertilizer processes involving (a) provid... | 09/01/1998 |
| 5722589 | Composite load bearing structure A composite load bearing structure comprises a main body portion having a top surface and a bottom surface defining a dimension of thickness therebetween, first and second side surfaces defining a dimension of width therebetween, first and second end surf... | 03/03/1998 |
| 5713518 | Railroad cross tie and track continuity detector systems A rail tie and track-tie connection includes a molded plastic body member having molded plastic cover pieces attached to the body member, with lip portions engaging and capturing bottom flanges on the track rails. The body member may be hollow with a fill... | 02/03/1998 |
| 5713517 | Sock for a ballastless rail track tie A sock for a tie of ballastless rail track that is to be held in a bed of concrete, the sock comprising firstly an elastically deformable case receiving the tie whose bottom edge is chamfered, and secondly a pad lying beneath the tie in the bottom of the ... | 02/03/1998 |
| 5609295 | Composite railway tie and method of manufacture thereof A composite railway tie, and process for manufacture thereof, is disclosed. The composite railway tie comprises a main body portion being made of a first composite material comprising a binding constituent in a proportion of about 10% to about 20% by volu... | 03/11/1997 |
| 5353987 | Railroad track system having vertically adjustable railroad tie and method of construction therefor A railroad track has a roadbed made of concrete and a pair of track beams of precast concrete mounted to the roadbed. Main bodies of the track beams have at the tops thereof a plurality of protrusions serving as ties and a plurality of recesses for receiv... | 10/11/1994 |
| 5236711 | Method for preserving wooden cross-tie A preservative-bearing pad and a method of using same to treat the interface between a railroad cross tie and tie plate. A sandwich of water-soluble active ingredient disposed between two layers of biodegradable hydrophilic backing is simply placed on the... | 08/17/1993 |
| 5170937 | Concrete railroad stringer or tie Concrete railroad stringer assembly for securing a railroad track comprising supports imbedded in the stringer and having a bow-shaped part extending above the stringer. The supports either are equipped with an abutment made of synthetic material or are m... | 12/15/1992 |
| 5055350 | Composite railroad cross-tie A railroad cross-tie made from sand and recycled thermoplastic containers. To practice the invention the containers made of many thermoplastic materials are granulated and mixed together. The labels and small amounts of residue from the original contents ... | 10/08/1991 |
| 5043225 | Wood preserving pad A preservative-bearing pad and a method of using same to treat the interface between a railroad cross tie and tie plate. A sandwich of water-soluble active ingredient disposed between two layers of biodegradable hydrophilic backing is simply placed on the... | 08/27/1991 |
| 4738878 | In situ preservative treatment of railroad tie In situ wood preservative treatment of a wooden railroad tie. The method includes the steps of injecting a paste-like preparation having a water soluble fungicide into one or more unoccupied spike holes in the rail supporting tie plate. The preparation lo... | 04/19/1988 |
| 4652495 | Resilient coat for tie of direct-connection type track A resilient coat for a direct connection-type tie (Danchoku tie) which is composed of a concrete tie body and a microcellular polyurethane elastomer coating layer which adheres to and coats the lower portion of the tie body to form an integral body therew... | 03/24/1987 |
| 4634049 | Concrete crosstie with recesses and method for the production thereof A concrete crosstie has a recess for holding a rail securing member engaging beneath a nose in the recess. Upper ends holding the rail down resiliently are loop-shaped, to obtain a low surface pressure at two spaced areas and exact positioning of the rail... | 01/06/1987 |
| 4449666 | Concrete railroad tie for supporting grade crossing panels A railroad grade crossing structure comprising a plurality of prefabricated, elongated, reinforced concrete panels formed of used, inverted rail sections placed between the rails of each track and outside the rails of each track to provide a smooth durabl... | 05/22/1984 |
| 4416419 | Railway bed A railway bed wherein a body on which rails are to be fitted is formed of an elastic member and rigid member and a reinforcing member is provided within the elastic member or at least on the lower surface of the rigid member. With such formation, the rail... | 11/22/1983 |
| 4265400 | Concrete sleeper for track circuitry A concrete sleeper for track systems incorporating electrical circuitry, in which sleeper electrically conducting cables are embedded, and therefore concealed therein, with an assembly to allow electrical connection between the cables and associated track... | 05/05/1981 |
| 4236670 | Arrangement at a railroad crossing An arrangement at crossings between a road and a railway. Between the rails and the respective edges of the road structure and between the rails are arranged first and second slabs level at their top surfaces with the top surfaces of the rails and the top... | 12/02/1980 |
| 4202494 | Rail mounting method and apparatus A long life railroad track and tie arrangement and method of making same. A wooden railroad tie is impregnated and covered with a thin layer of polypropylene which serves to protect the tie both from the weather and from mechanical abuse. The tie is apert... | 05/13/1980 |
| 4151145 | Latex-modified, pretensioned and prestressed structures having enhanced structural load bearing capacity This invention relates to a latex-modified, pretensioned, and prestressed concrete structure having at least about a 50% reduction in bond transfer length as compared to a structure not modified by a latex. Such structure is composed of a cured concrete c... | 04/24/1979 |
| 4134546 | Wood crossties with cellular plastic inserts A wooden structure incapable of holding a fastening device is restored by boring a hole of a desired size into the structure, cleaning the hole, and introducing a cellular plastic insert of a suitable size, so that the insert can hold a fastening device d... | 01/16/1979 |
| 4108377 | Non-metallic-reinforced molded crosstie A reinforced railroad crosstie formed by molding and bonding comminuted lignocellulosic material into a monolithic beam around a plurality of wooden reinforcing members which have relatively clear and straight grain, a high modulus of rupture and a high m... | 08/22/1978 |
| 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 |
| 4083491 | Synthetic railroad crosstie A railroad crosstie is constructed from at least two individually distinct rail support blocks interconnected by a web system which is fastened to the blocks and which comprises at least one self-supporting rigid sheet member adapted to be buried in the r... | 04/11/1978 |
| 4079889 | Railroad track rail A rail track that reduces noise and vibration for particular use in rapid transit and subway lines. The track is formed of a conventional rail embedded in a pre-stressed concrete bed. Sections of such jacketed rails are joined together by means of flanges... | 03/21/1978 |
