Hydraulic railroad car door with program plate

Details Hydraulic railroad car door with program plate Hydraulic railroad car door with program plate

1976-08-16

1979-10-16

Downey, Kenneth

Movable or removable closures

Mounted for multidirectional or oblique movement

Initial or terminal movement transverse to sliding movement...

49360, 49280, 49449, E05D 1510

Patent

active

041708458

ABSTRACT:
A hydraulic railroad car door assembly comprising a sliding door of the plug type carried on crank arms rotated by shafts rotating with respect to the door, the door opening and closing by the swinging of the crank arms which are carried by tracks on which the door slides, a program plate slidably mounted on the door and having slots therein, door latching assemblies, and means including pins received in the slots for causing sequenced unlatching and door opening and sequenced door closing and latching as said program plate is reciprocated by a cylinder controlled by a hydraulic pump.

REFERENCES:
patent: 3397489 (1968-08-01), Cook
patent: 3488074 (1970-01-01), Herr
patent: 3885349 (1975-05-01), Owen

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