Dual level access door system for railway vehicles
AssigneeTekdata Inc.
InventorMagdy A. Rizk
Life of this patent
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Abstract
A door system for a railway car which provides for both high and low level access. The door system comprises a sliding door, a platform displaceable between raised and lowered positions for respectively clearing and covering the stairwell of the railway car, and a threshold extending laterally outwardly of the sliding door to provide a continuation of the platform when displaced to its lowered position. The threshold is releasably connected to the sliding door for co-linear movement with the sliding door when the platform is raised, while remaining stationary in a functional position when the platform is lowered for enabling high level boarding.
Claims15
A door system for a railway vehicle having a door opening and a stairwell extending downwardly from a vehicle floor level to a bottom end of said door opening, said door system comprising a sliding door displaceable between open and closed positions for selectively closing said door opening, a stairwell platform displaceable between a retracted position for clearing said stairwell and an extended position for covering said stairwell, and a threshold extending outwardly from an outer surface of said sliding door substantially at said vehicle floor level, said threshold being releasably and slidably connected to said sliding door for co-linear movement as a single unit with said sliding door between said open and closed positions when said stairwell platform is in said retracted position thereof, while remaining stationary in a functional position when said stairwell platform is in said extended position thereof for allowing high level boarding by providing a continuation of said stairwell platform.
A door system for a railway vehicle having a door opening and a stairwell extending downwardly from a vehicle floor level to a bottom end of said door opening, said door system comprising a sliding door displaceable between open and closed positions for selectively closing said door opening, a stairwell platform displaceable between a retracted position for clearing said stairwell and an extended position for covering said stairwell, and a threshold extending outwardly from an outer surface of said sliding door substantially at said vehicle floor level, said threshold being adapted to jointly move as a single unit with said sliding door between said open and closed positions and to be made stationary in a functional position thereof by engagement of said threshold with a retainer upon positioning of said stairwell platform to said extended position thereof, whereby said sliding door may be displaced independently of said threshold to said open position thereof for allowing high level boarding.
Dependencies are inferred from the claim text.