Mechanism for selectively operating hopper doors of a...

Details Mechanism for selectively operating hopper doors of a... Mechanism for selectively operating hopper doors of a...

2008-06-24

2008-06-24

Le, Mark T. (Department: 3617)

Railway rolling stock

Special car bodies

Dumping

C105S286000, C105S288000, C105S311200

Reexamination Certificate

active

07389732

ABSTRACT:
A mechanism for selectively operating hopper doors of a railroad car. A fulcrum coupled to the operating cylinder includes channels within which levers can be selectively activated to open specific doors of the car, thus allowing the contents of the railcar to be sequentially emptied. The mechanism can be installed on railcars having either transverse hopper doors or longitudinal hopper doors.

REFERENCES:
patent: 3675590 (1972-07-01), Schuller
patent: 3772996 (1973-11-01), Schuller
patent: 4132177 (1979-01-01), Funk
patent: 4284011 (1981-08-01), Eagle
patent: 4508037 (1985-04-01), Rousseau
patent: 4601244 (1986-07-01), Fischer
patent: 4766820 (1988-08-01), Ritter et al.
patent: 4829908 (1989-05-01), Hallam
patent: 5249531 (1993-10-01), Taylor

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