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| Number | Title | Issue Date |
| 7267304 | Railroad yard switch machine A railroad switch machine which is normally operated by an electric motor but which may be manually operated without causing rotation of the power shaft of the electric motor to enable the switch machine to move the switch points without having to overcome the brake... | 09/11/2007 |
| 6056244 | Railway switch setting device A device for setting railway switches includes a plurality of interlinked hydraulic switching devices (6) connected to a separate reversible hydraulic drive unit in a manner offset in the longitudinal direction of the rails, wherein the working volumes of... | 05/02/2000 |
| 5687935 | Device for operating switches A device for operating switches includes a plurality of interlinked hydraulic switching devices (7) offset in the longitudinal direction of the rails. The first mechanical switching device is connected with a hydraulic cylinder/piston unit acting as a pum... | 11/18/1997 |
