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| Number | Title | Issue Date |
| 7979995 | Method of measuring a track position Measurement of a track position is carried out in successive measurement sections (15), wherein the relative track position is registered in each case with the aid of a long chord (17), formed by a laser beam (16), which serves as reference line... | 07/19/2011 |
| 7428781 | Method and apparatus for performing overhead crane rail alignment surveys A method and apparatus for conducting an overhead crane runway system survey uses a survey apparatus that is alternately pushed or pulled by an overhead crane. The survey apparatus, having a wheeled carriage, includes survey sighting targets, e.g., prisms, that are ... | 09/30/2008 |
| 7325316 | Device and method for inserting elements into the ground, mechanism for this device and system using this device A device for inserting elements into the ground in order to carry out works includes a positioning mechanism. The positioning mechanism includes an upper panel which is fixed to the chassis of a vehicle for transporting the insertion device, a movable plate to which... | 02/05/2008 |
| 7254896 | Inner bearing split axle assembly A split axle assembly for obtaining gage measurements of a track including a first wheel with a first split axle, a second wheel with a second split axle, a first bearing for rotatably receiving the first split axle, and a second bearing for rotatably receiving the ... | 08/14/2007 |
| 7239377 | Method, device, and computer program for determining a range to a target A method, device, and computer program for determining range to a target is disclosed. Specifically, the invention provides a method, device and computer program for determining a second range to a target based on a first range to the target and an angle to the targ... | 07/03/2007 |
| 7228747 | Device for detecting rail movement A device for holding a transmitter and a receiver for detecting a deformation state of a component. The device includes a first holding part and a first receptacle, the transmitter being disposed on the first holding part via the first receptacle, wherein the first ... | 06/12/2007 |
| 7199723 | Cable plow installation monitor method and apparatus The present invention is directed to a method and apparatus for installing a utility conveyance. A tractor which includes sensors, a plow locator and a monitor system is presented. The sensors are used to locate markers, which identify the boundaries of a right of w... | 04/03/2007 |
| 7181851 | Method of tracking a track geometry In a method of tracing a track geometry immediately ahead of a ballast pick-up device of a cleaning machine in a working direction, a first and a second measuring chord are guided on the track by a respective front and rear end point. A versine measured by a first v... | 02/27/2007 |
| 7152347 | Method and apparatus for applying railway ballast A method and apparatus for spreading ballast along railways makes use of an inertial measurement system to determine where to apply ballast from a hopper car. A variety of techniques can be used to determine the location and speed of the ballast spreading train, inc... | 12/26/2006 |
| 7152330 | Device and method for monitoring the state of the sub-structure of fixed tracks Device for monitoring the state of the substructure of fixed tracks, especially in the transition region of substructure supporting plates, measuring bolts, which, in vertical recesses, pass freely through the track plate above, being fastened at the ends of the sub... | 12/26/2006 |
| 7081824 | Track monitoring equipment The alignment of railway tracks may be monitored using an accelerometer (36) mounted on a bogie (24) of a railway vehicle to detect lateral accelerations, and a displacement transducer (38) to monitor the lateral displacements of a wheelset (... | 07/25/2006 |
| 7050926 | Method of surveying a track In a method of surveying a track (9), a first or mobile measuring vehicle (1) and a second or stationary measuring vehicle (2) are placed at a distance apart from one another on a track section to be measured. A reference line (14) is for... | 05/23/2006 |
| 7036232 | Apparatus for monitoring the rails of a railway or tramway line A laser apparatus for monitoring the rails of a railway or tramway line, characterized by comprising at least two measurement units mounted on a railway or tramway carriage and operating at last on the inner part of the two rails, along with said carriage is made to... | 05/02/2006 |
| 7024780 | Method and device for determining the rectilinearity of guide rails A method and a device for determining the rectilinearity of guide rails wherein a guide rail is oriented substantially parallel to a reference axis. At least one light beam is emitted along the reference axis by a light source and is detected by a light detector. Wh... | 04/11/2006 |
| 7023539 | Device for monitoring the condition of the superstructure especially of fixed railroad tracks A device for monitoring the superstructure state especially of fixed railroad tracks, with a height sensor system, which is installed in a measuring vehicle, preferably constructed as a laser scanning system, for determining the height position of an anchor clamp an... | 04/04/2006 |
| 6995556 | Electromagnetic gage sensing system and method for railroad track inspection An electromagnetic gage sensing system having sensor heads positioned over each rail of a railroad track that measures both rail gage and height distance above the rails of a railroad track. Each sensor head includes an array of electromagnetic field generating coil... | 02/07/2006 |
| 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 |
| 6634112 | Method and apparatus for track geometry measurement A method and apparatus for measuring the geometry of a rail for a railroad track which includes mounting first and second cameras in back to back relationship to create a single camera axis passing through the camera lenses and to define a coordinate syst... | 10/21/2003 |
| 6588114 | Measuring pump device A light weight compact device used in a rail road track maintenance organization carried by a track inspector to measure the vertical difference in track or rail of the track under normal operating conditions of trains which does not obstruct the travel o... | 07/08/2003 |
| 6411870 | Derailment detecting method and derailment detecting apparatus for rolling stock During traveling of rolling stock on a route, running velocity of the rolling stock is detected. Vertical acceleration is also detected at a carbody above spring rigging of truck and a component is extracted in a predetermined frequency range from the ver... | 06/25/2002 |
| 6397130 | Multi-sensor route detector for rail vehicle navigation The multi-sensor route detector system preferably consists of at least four sensors (three rail detectors and a truck angle detector), sensor power supplies, signal conditioning for the output of the sensors, and a computer performing pattern matching and... | 05/28/2002 |
| 6311624 | Track tamping method and machine In a method of tamping a track, the displacements between the two reference points relative to each other are recorded during a first advance of the track tamper along the track to form a first curve indicating an existing track position. On the basis of ... | 11/06/2001 |
| 6260485 | Method for correcting the position of a track The position of a track is corrected on the basis of the independent and separate measurement of the level errors of each track rail, and by concentrating the correction work on the most egregious position errors. For this purpose, a sub-section of the tr... | 07/17/2001 |
| 6230417 | Level crossing adjusting device The gauge and cess panels (3, 4) of a level crossing creep apart lengthwise of the track (1, 2) and need closing up again from time to time. A device (5, 24) for this consists of a member (8, 26) that engages under or over a rail (1) and has a portion (10... | 05/15/2001 |
| 6220170 | Method of correcting the position of a railroad track A method of correcting the position of a railroad track composed of laterally adjacent track sections connected by branch tracks comprises the steps of measuring the position of each individual track section relative to an absolute reference system common... | 04/24/2001 |
| 6202314 | Calibration system for use with measuring systems A measuring system includes an optical site reference, such as a reference line within a scope used in surveying, and a calibrated reference scale which provides measurements by optical comparison to the optical site reference. The calibrated reference sc... | 03/20/2001 |
| 6189224 | Machine and method for rehabilitating a ballast bed A machine frame of a ballast bed rehabilitation machine is composed of two articulatedly coupled frame parts. A longitudinal inclination meter is mounted on the leading frame part, in the working direction, for detecting the inclination of the track. A la... | 02/20/2001 |
| 6158352 | Machine and method for rehabilitating a track A mobile machine for rehabilitating a track has a machine frame extending in a longitudinal direction and supported by undercarriages for mobility on the track in an operating direction, the machine frame being composed of a leading frame part with respec... | 12/12/2000 |
| 6119353 | Method and apparatus for non-contact measuring of the deflection of roads or rails Equipment for non-contact measurement of the deflection of a road (2) comprises a self-propelled vehicle with a load (7) which influences at least one wheel (4), the speed of which is measured in the direction of travel. The equipment further comprises a ... | 09/19/2000 |
| 6043889 | Misalignment detection apparatus and method A rail misalignment detection system for use in verifying whether fixed span and moveable span rails on a fixed span and a moveable span of a rail bridge, extend within an acceptable range of misalignment when the moveable span is positioned in a closed a... | 03/28/2000 |
| 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 |
| 5848476 | Manual clamping device for measuring railway track alignment and profile A manual apparatus for facilitating railway track alignment and/or track profile measurements. The tool consists of two fastening units, each having a cord positioner designed to engage the rail head and to properly place a cord for measuring, a reel for ... | 12/15/1998 |
| 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 |
| 5613442 | Arrangement and method for mesuring and correcting the line of a track The invention relates to an arrangement and method for measuring and correcting the line of a track. The method comprises forming an optical reference beam between an emitter on an emitter bogie and a position-sensitive receiver on a measuring and correct... | 03/25/1997 |
| 5596203 | System and method for detecting the relative position and motions between a rail vehicle and track A detecting system for rail vehicles having at least one sprung rigid structure, for instance a bogie frame, and two axles, comprises photosensor position-detecting means applied to the structure and adapted to detect typical geometrical characteristics o... | 01/21/1997 |
| 5481982 | Track surfacing machine and method for correcting the track geometry based on track cant and measured lining force A track surfacing machine for correcting the track geometry includes a machine frame supported by undercarriages for mobility in an operating direction and including lining drives for correcting the track in a direction transversely to the track and measu... | 01/09/1996 |
| 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 |
| 5301548 | Track measuring car A measuring car arrangement for monitoring an existing track position with respect to a desired track position comprises a measuring car having a frame extending longitudinally in a plane and undercarriages supporting the frame for mobility in an operatin... | 04/12/1994 |
| 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 |
