Abstract: A sliding doors and seals system and a passenger vehicle having such system with the latter including inflatable seals and weather seals arranged to conceal and protect the inflatable seals against direct and even indirect contamination and tampering therewith and such as to provide a failsafe feature whereby a pair of sliding doors will be frictionally retained closed by one inflatable seal alone upon failure of the other inflatable seal.

Abstract: There is disclosed a motion control and locking apparatus for the passenger entry and exit doors of a mass transit vehicle, which passenger entry and exit doors are desired to be locked when the vehicle is moving between stations and are desired to be unlocked only when the vehicle has stopped at the desired location for passenger entry and exit within a station.

Abstract: A drive assembly, driven assembly and track assembly are provided separately for ready installation on a doorframe to support and drive a pair of overhung doors. The drive assembly comprises a pulley and its drive mechanism which are mounted on a common bracket to be fastened to one of the jambs of the doorframe, whereas the driven assembly includes an idler pulley mounted on another bracket to be fastened to the other jamb. The track assembly comprises a rail bolted at both ends to the two brackets, and two pairs of door hangers in rolling engagement with the rail for suspending the respective doors therefrom. The door hangers are attached to an endless wire rope extending around the pulleys.