| YAMATO TRACKWORK SYSTEM CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110121089 | Guard Rail Apparatus for Guiding Derailed Wheels - The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety. | 05-26-2011 |
| 20110121088 | Wheel Guard Device - The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety. | 05-26-2011 |
| 20110049254 | Wheel Guard Apparatus - A wheel guard apparatus capable of preventing a wheel from derailing and preventing a vehicle from seriously deviating from a track even if the wheel has derailed includes a fixed portion fixed to a railroad tie located between main line rails; a movable portion supported by a rotating shaft provided on the fixed portion and extending in a horizontal direction and configured to be rotatable around the rotating shaft toward a track center side; and a guard rail located at a position separated from the rotating shaft of the movable portion and held to extend in parallel with the main line rail. The guard rail includes an outer stopper portion configured to prevent the wheel from derailing toward an inner side of the main line rail and an inner stopper portion configured to prevent a derailed vehicle from deviating to an outer side of a track. | 03-03-2011 |
| 20090200389 | Safety Device for a Train - A derailment prevention guard includes a guard member ( | 08-13-2009 |
