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| Number | Title | Issue Date |
| 7395139 | Condition monitoring system A system is disclosed for monitoring condition of a railways installation such as a points machine. The system includes a plurality of sensors (S1, S2, S3-SN) associated with elements of the installation for monitoring par... | 07/01/2008 |
| 7258069 | Laterally adjustable nipper-clipper assembly and method of operating a laterally adjustable nipper-clipper assembly A nipper-clipper assembly for lifting railroad ties and installing clip assembly springs to couple rails to a tie. The ties are disposed below the rails and extending in a lateral direction relative to the longitudinal rails. The nipper-clipper assembly includes a m... | 08/21/2007 |
| 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 |
| 7164975 | Geometric track and track/vehicle analyzers and methods for controlling railroad systems Track and track/vehicle analyzers for determining geometric parameters of tracks, determining the relation of tracks to vehicles and trains, analyzing the parameters in real-time, and communicating corrective measures to various control mechanisms are provided. In o... | 01/16/2007 |
| 7144195 | Asphalt compaction device An asphalt compaction device including a primary compaction plate and a secondary compaction plate for concentrating force, resulting in an increased compaction rate. The secondary compaction plate may be either rotated or extended into its operative position. The a... | 12/05/2006 |
| 7089867 | Device for lifting and re-positioning a track used in television and motion picture industries A device for use in television and motion picture industries lifts and re-positions a track on which camera dolly or crane is located. The device includes a first bar member of a substantially elongated shape comprising a hinge, a first caster wheel assembly, and a ... | 08/15/2006 |
| 7076895 | Apparatus and method for suction and discharge of material An apparatus for suction and discharge of material comprises a container (9) with a suction opening (19) for letting in a sucked-up air/material mixture and a discharge opening (14) for discharging material. The container (9) is rotatable... | 07/18/2006 |
| 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 |
| 7027966 | Railroad curve transition spiral design method based on control of vehicle banking motion Transition spirals for successive sections of railroad track with different degrees of curvature are designed by first specifying the manner in which the bank angle of the track should change with distance along a transition spiral. Functional forms for bank angle a... | 04/11/2006 |
| 6976324 | Method of scanning a track bed profile A method for the contactless scanning of a track bed profile extending perpendicularly to a longitudinal extension of the track, comprises the steps of simultaneously effectuating the scanning and a measurement of any deviation from a desired track level at a locati... | 12/20/2005 |
| 6832559 | Roller rail clamp The invention provides roller rail clamp apparatus for use in lifting a rail for operations such as replacement of ballast or resurfacing of a railway. The apparatus comprises parallel pairs of spaced-apart lift roller assemblies mounted to a support for positioning... | 12/21/2004 |
| 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 |
| 6637340 | Rail pulling system A rail pulling system for efficiently drawing the ends of two rails together. The rail pulling system includes an elongate frame, a control unit, a first sliding unit and a second sliding unit, a pair of first actuators attached to the first sliding unit,... | 10/28/2003 |
| 6637727 | Rail puller including a clamping beam and two clamping members and a method thereof A rail puller that applies tension to rail sections to reduce the gap between the ends of rail sections. The rail puller comprises a first clamp assembly and a second clamp assembly located at opposite ends of the rail puller. A clamping beam is coupled t... | 10/28/2003 |
| 6622633 | Railroad machine centering system A railway maintenance device movable on a railroad track having a pair of spaced rails, the device including a frame configured for movement relative to the track and having at least two side members. At least one track contacting element is associated wi... | 09/23/2003 |
| 6546876 | Tamping machine having a measuring sensor coupled to mechanical measuring device on an auxiliary track A mobile tamping machine for tamping ballast under a railroad track includes a machine frame supported on undercarriages running on a main track for moving the machine in an operating direction. A tamping unit is mounted on the machine frame between the u... | 04/15/2003 |
| 6453822 | Tamping machine A mobile tamping machine for tamping ballast under a main track comprises a machine frame supported on undercarriages running on the main track for moving the machine frame in an operating direction, the main track defining a track plane, a ballast tampin... | 09/24/2002 |
| 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 |
| 6375402 | Apparatus for unloading rails An apparatus for unloading rails from a freight car on which the rails are arrayed to extend in a longitudinal direction of the freight car comprises a track-bound car, and a rail guiding unit positioned at each car end. Each rail guiding unit comprises a... | 04/23/2002 |
| 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 |
| 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 |
| 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 |
| 6089163 | Apparatus for adjusting the distance between rails A system for adjusting the separation distance between adjacent rails over which vehicles travel, the apparatus including a vehicle moveable along the rails and including a boom or pivoted art member mounted on the frame, the boom or arm extending in cant... | 07/18/2000 |
| 5887527 | Track lining machine A track lining machine comprises a machine frame supported on the track by undercarriages, a track stabilization assembly vertically adjustably mounted on the machine frame and engaging the track, the track stabilization assembly comprising a vibrator for... | 03/30/1999 |
| 5640909 | Method and machine for tamping and stabilizing a track A track is tamped and stabilized at a desired level by lifting the track to a temporary level, intermittently tamping the track and then advancing along the track in an operating direction in continuously repeated tamping cycles, and in continuously repea... | 06/24/1997 |
| 5619929 | Track tamping machine, machine arrangement and method A mobile track tamping machine for simultaneously tamping ballast under a plurality of track ties comprises a machine frame extending in a longitudinal direction and supported by undercarriages on the track for movement in an operating direction. Two tamp... | 04/15/1997 |
| 5617794 | Track stabilization machine having stabilization units linked to oscillating out of phase with each other A dynamic track stabilizer comprises a machine frame supported on the track by undercarriages for mobility along the track, and two track stabilization units linked to the machine frame by vertical adjustment drives, the track stabilization units being sp... | 04/08/1997 |
| 5617793 | Method of tamping a plurality of ties simultaneously A method of tamping a plurality of ties fastened to rails of a track comprises repeated cycles of a first tamping operation comprising the steps of lifting the track to a desired level and simultaneously tamping ballast under two groups of adjacent ties, ... | 04/08/1997 |
| 5605099 | Maintenance vehicle and method for measuring and maintaining the level of a railroad track A maintenance vehicle and associated method for measuring and correcting the level of a railroad track in a single pass. An instrument carriage, or frog, is towed by and in fixed relationship to the maintenance vehicle. The frog carries at least one incli... | 02/25/1997 |
| 5598782 | Methods of railway track maintenance A method of adjusting the geometry of a stretch of a railway track uses a track maintenance machine which runs on the track and which has at least one measuring reference system (13) guided by feelers (10,12) on the track and sensors (14,15) for determini... | 02/04/1997 |
| 5591915 | System for the continuous measurement of the resistance of a track to transverse displacement A method of continuously measuring the resistance of a track to transverse displacement comprises the steps of continuously advancing a dynamic stabilizer along the track, applying a power to the dynamic stabilizer to impart oscillations to the track exte... | 01/07/1997 |
| 5528991 | Apparatus and associated methods of laying track Track laying apparatus and associated methods are provided for installing rails on blocks. In a preferred embodiment, a track laying apparatus has an installation portion for installing the blocks to the rails at predetermined lateral and longitudinal spa... | 06/25/1996 |
| 5515788 | Tamping machine A ballast tamping machine comprises an elongated machine frame, and a tool carrier frame supporting a ballast tamping head, a track lifting and lining unit and an auxiliary rail lifting device comprising a rail clamping element and drive for vertically an... | 05/14/1996 |
| 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 |
| 5477787 | Mobile track working machine performing track lining and ballast tamping in a first direction and ballast sweeping and plowing in the opposite direction A mobile track tamping and ballasting machine movable along a railroad track in a first operating direction and a reverse direction, which comprises a first machine frame, a second machine frame, an articulated coupling connecting the machine frames, unde... | 12/26/1995 |
| 5419259 | Machine for compacting track ballast with variable gauge track stabilizer A mobile machine for compacting ballast comprises a machine frame extending in a longitudinal direction and supported by undercarriages on the track rails, and a ballast bed stabilizing apparatus vertically adjustably mounted on the machine frame. The app... | 05/30/1995 |
| 5379700 | Two machine arrangement for track tamping in switches having track lifting units mounted only on first machine A mobile track tamping machine arrangement comprises a first machine and a second machine, each machine comprising a self-propelled elongated machine frame supported on undercarriages running on the track, the first machine preceding the second machine in... | 01/10/1995 |
| 5329856 | Continous action tamping machine A mobile machine for leveling, lining and tamping a track, has an elongated machine frame supported on undercarriages for continuous movement along the track in an operating direction during a leveling, lining and tamping operation. The machine frame comp... | 07/19/1994 |
| 5299505 | Ballast tamping machine having pivotable and extendable auxiliary lifting and lining unit for branch track A ballast tamping machine comprises a machine frame supported on undercarriages, a tamping unit vertically adjustably mounted on the machine frame and comprising reciprocable vibratory tamping tools, and a track lifting and lining unit mounted on the mach... | 04/05/1994 |
| 5297482 | Rail threader A rail threader comprising a top plate having side plates extending downwardly from the opposite sides thereof. A vertically disposed plate extends upwardly from the top plate and is adapted to serve as an abutment for the loose rail during the threading ... | 03/29/1994 |
