Electropneumatic door control

Details Electropneumatic door control Electropneumatic door control

1982-11-15

1985-10-15

Garrett, Robert E.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

Comprising vehicle system or component responsive either to...

49 31, 303 61, 91392, E05F 1520, F15B 1520

Patent

active

045468451

ABSTRACT:
An electropneumatic door control for vehicles is disclosed which consists of a pneumatic portion and an electronic portion. The electronic portion processes successive commands actuated by the vehicle operator to channel the signals to the pneumatic portion of the apparatus to activate alternate door openings and closings. Any blockage of the door movement is detected and signals processed to reverse the door closing or to halt the opening until the fault is corrected. The electronic portion also assures that the vehicle doors can only be opened after the vehicle has come to a stop, that when the vehicle doors are open the station or parking brake is held engaged, and that an audible warning signal sounds for a predetermined interval before the closing of the door.

REFERENCES:
patent: 272099 (1883-02-01), Strack
patent: 2311806 (1943-02-01), Almond
patent: 3575604 (1971-04-01), Smith
patent: 3884437 (1975-05-01), Linderman
patent: 3916567 (1975-11-01), Daugirdas
patent: 3958783 (1976-05-01), Rhoton
patent: 4339843 (1982-07-01), Burnett, Jr.
patent: 4478131 (1984-10-01), Liermann et al.

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