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| Number | Title | Issue Date |
| 6495933 | Powered trap door device for vehicle A powered trap door device for a vehicle including a trap door hinged at a floor of a vestibule with steps of the vehicle and a sliding vehicle door. A screw driving mechanism that opens/closes the trap door and is driven by an electric motor with an elec... | 12/17/2002 |
| 6357362 | Apparatus to accommodate ground level and platform boarding of a transit vehicle A door system for a transit vehicle provided with a door opening has a full height sliding door for covering and uncovering the door opening, and a threshold which is disposed within the sliding door when the sliding door is closed. The threshold is posit... | 03/19/2002 |
| 4347030 | Wheelchair loading device for trains This invention relates to a novel loading and detraining apparatus for use by wheelchair confined and other handicapped passengers. One embodiment of the invention makes provision for the loading and detraining of such passengers at the entrances to railw... | 08/31/1982 |
| 4275664 | Step-platform operation A step-platform operator 17 for transit vehicles for driving a step 19 and a platform 18 between open and closed positions, includes a reversible drive motor 42 driving the step and platform through a lever and linkage for providing differential motion be... | 06/30/1981 |
| 4273498 | Railway car trap door lift A railway car includes conventional steps leading from a lower station platform to the floor level in a vestibule. A lift platform adapted to receive a seat or wheel chair is provided to lift a handicapped person who has difficulty going up or down steps.... | 06/16/1981 |
