Patent ID: 7721653
Filing Date: 2010-05-25
Classification: B61B

Abstract:
1. A combined wall and door assembly for providing a safe passageway to ingress and egress a subway train from an adjacent platform, said combined wall and door assembly comprising: a wall assembly including a plurality of door assemblies including means for automatically biasing said access doors between open and closed positions when the subway train arrives and leaves a train terminal respectively such that passengers are prohibited from premature ingress and egress of the subway train during a schedule stop; wherein said automatic biasing means comprises: a plurality of sensors positioned at selected portions of said wall assembly, each of said sensors generating and transmitting an input signal when the subway train reaches the terminal, each of said input signals having a true value when said access doors are aligned with the subway train, each of said input signals have a false value when said access doors are not aligned with the subway train; a logic gate directly coupled to said sensors and receiving said input signals, said logic gate generating and transmitting a true output signal when all of said input signals have the true values respectively, said logic gate generating and transmitting a false output signal when at least one of said input signals have a false value; at least one light array electrically coupled directly to said access ports; a control switch electrically coupled to said logic gate and being responsive to said output signal, said control switch generating and transmitting first and second control signals for toggling said light-emitting members between first and second colors when said logic gate output signal is true and false respectively, said control signal further generating and transmitting a third control signal upon receipt of said true output signal from said logic gate; and an actuator assembly operably coupled directly to said control switch and said access ports respectively, said actuator assembly causing said access doors to slidably adapt between the open and closed positions when said control switch generates and transmits said third control signal; wherein said support frame comprises: a first plurality of horizontally disposed support members situated along segmented end-to-end longitudinal relationships along a ground surface of the subway platform; a plurality of vertically disposed support members equidistantly spaced between adjacent ones of said first plurality of support members and directly connected thereto respectively; and a second plurality of horizontally disposed support members situated along the segmented end-to-end longitudinal relationship above the ground surface of the subway platform, said second plurality of support members being directly connected to top ends of said vertically disposed support members; wherein said actuator assembly comprises: a single and unitary bracket extending upwardly from said first plurality of support members up to a termination point located above said second plurality of support members respectively; a plurality of guide tracks directly anchored to respective top portions of said brackets and being registered parallel to said first and second pluralities of support members respectively; and a plurality of casters rotatably connected to said guide tracks and extending downwardly therefrom such that said casters become directly abutted against top edges of said access doors respectively; wherein said casters rotate along clockwise and counter clockwise directions when said control switch transmits said third control signal and thereby cause said access doors to linearly travel along lateral and medial directions within respect to said brackets respectively.