Railway rolling stock – Special car bodies – Passenger
Patent
1992-07-02
1994-01-25
Oberleitner, Robert J.
Railway rolling stock
Special car bodies
Passenger
49 28, 49 29, 318266, 318468, E05F 1500
Patent
active
052807541
ABSTRACT:
A system for detecting objects in the path of a power operated, movable door operating in a mass transit vehicle, which would obstruct door closing. The system also includes an integral method for detection of a "free wheeling" door occasioned by failure of the door mechanical drive. Method and apparatus disclosed utilize door handle locating devices such as electrical switches located at predetermined points along the door closure track. A combination of door locations along the closure track centrally define positions signaling either door linkage failure with attendant "free wheeling" door, and/or door obstruction, in each case, the system disclosed prevents train motion until the improper door condition is remedied. The combination provides a reduction in passenger hazards occasioned by train movement with defective operator linkage and/or door obstruction due to trapped passengers or other impediments to door closure.
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Flanagan Daniel J.
Gutierrez Robert M.
Patsch William J.
Udelhofen Patrick J.
Lidd Francis J.
Mark IV Transportation Products Corp. (Vapor Div)
Oberleitner Robert J.
Rutherford Kevin D.
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