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| Number | Title | Issue Date |
| 6913717 | Method of constructing a rail track in which a concrete track slab is produced and rail track anchor members are inserted into the track slab A method of constructing a rail track in which a concrete track slab is produced and rail track anchor members are inserted in the track slab by an inserter system mobile along the route of the rail track includes the following steps: using a machine for continuousl... | 07/05/2005 |
| 6651353 | Rail alignment tool A rail alignment system for locating a first end piece and a second end piece of a first rail section and a second rail section. The rail alignment system comprises (a) a first rail alignment tool for engaging and applying force to said first rail section... | 11/25/2003 |
| 6385861 | Rail alignment tool A rail alignment system for locating a first end piece and a second end piece of a first rail section and a second rail section. The rail alignment system comprises (a) a first rail alignment tool for engaging and applying force to said first rail section... | 05/14/2002 |
| 6014815 | Machine for producing a design track position At a machine for the establishing of a design--track position with a machine frame which runs on chassis and with a working unit coupled thereto, a measuring unit is in accordance with the invention directly placed on the machine frame for the working uni... | 01/18/2000 |
| 5930904 | Catenary system measurement apparatus and method Apparatus and method for measuring height and stagger of a railway catenary is disclosed. The apparatus comprises a platform supported on the track having a distance measuring means mounted on a traversing means for angular or lateral displacement of the ... | 08/03/1999 |
| 5671540 | Laser beam track alignment safety device A new and improved laser beam track alignment safety device with a tube having an inner surface and an outer surface. A first metal housing has an opening therein. The opening of the first metal housing is secured to the tube. An indicator means is secure... | 09/30/1997 |
| 5519944 | Straightness measuring device A device for measuring the straightness of a conductive object includes a plurality of capacitive distance sensors which are aligned along an axis of a ruler to be placed on the object. Circuits are provided for indicating the measurements provided by eac... | 05/28/1996 |
| 5353512 | Measuring arrangement for continuously measuring undulatory irregularities of a rail A measuring arrangement (2) for continuously measuring undulatory irregularities in the running surface (4) of a rail (5) of a track (6) comprises a measuring trolley (1) having flanged wheels (8) which are able to roll on the track (6) and a trolley fram... | 10/11/1994 |
| 5331745 | Process and apparatus for surveying a railway track for any deviation from a track survey plan A process and apparatus for surveying a railway track includes a light-receiving and emitting head capable of swivelling about vertical and pitch axes mounted on a measuring platform moveable along the track, as constantly aligned with a reference mark su... | 07/26/1994 |
| 5203089 | Railroad vehicle for measuring the geometrical parameters of railroad track The invention relates to a railroad vehicle for measuring the parameters of a railroad track, characterized by the presence of third axles (13 and 23) with independent wheels and disposed between the main axles (11 and 12; 21 and 22) of the bogies (10 and... | 04/20/1993 |
| 5199176 | Apparatus for the non-contact measurement of a track gage Apparatus for the non-contact measurement of the gage of a track comprises a machine frame equipped with undercarriages supporting the machine frame for mobility on the track and a wheel axle having wheels running on the track rails, and an optical sensor... | 04/06/1993 |
| 4965940 | Method and apparatus for aligning a sawmill guide rail A saw mill guide rail capable of being quickly, easily and accurately aligned to the saw blade, having two intersecting surfaces machined into the head of the rail, each parallel to the rail head length and extending for the length of the rail, one being ... | 10/30/1990 |
| 4625412 | Apparatus and method for measuring the wear of railroad rail An apparatus and method is provided for measuring the wear in the cross-sectional profile of a railroad rail. A carriage is adapted for travel along the length of the rail and includes means for moving transversely with respect to its direction of travel ... | 12/02/1986 |
| 4554624 | Railroad measuring, gauging and spiking apparatus A railroad measuring, gauging, and spiking apparatus uses a closed servoloop arrangement to provide accurate rail gauging. An LVDT sensing arrangement uses three rail feeler wheels to sense the rail gauge immediately adjacent to spiking guns on the appara... | 11/19/1985 |
| 4297787 | Insulated gauge rod and method of making the same An insulated gauge rod is disclosed which comprises a fiberglass rod secured to and extending between a pair of metal castings which are threadably mounted on the ends of metal rods which are secured to the spaced-apart railroad tracks. Each of the castin... | 11/03/1981 |
