Railcar gravity multi-ply outlet seal for sliding doors

Details Railcar gravity multi-ply outlet seal for sliding doors Railcar gravity multi-ply outlet seal for sliding doors

1992-06-18

1994-01-11

Butler, Douglas C.

Railway rolling stock

Special car bodies

Dumping

494751, B61D 720, B61D 722

Patent

active

052771288

ABSTRACT:
A gravity outlet valve (10) is for use on a railway car for discharge of lading from the car. The valve has sloping sidesheets connected together to form sidewalls (12a, 12b) and endwalls (14a, 14b) of the valve. An outlet (O) is defined by the lower end of the sidesheets and endsheets. A gate (16) is located beneath the outlet and is slidably movable from a valve closed to a valve open position. A seal (34) is used for sealing the valve and preventing loss of lading. The seal is a multi-ply seal having an inner core (36) of a spring-like material, and an outer covering (38) of a wear resistant material. The outer covering is contacted by the gate as it moves between its positions. The inner core forces the outer covering into this contact whereby a seal is effected between the outer covering and the gate.

REFERENCES:
patent: 3472178 (1969-10-01), Floehr
patent: 3807318 (1974-04-01), Chierici
patent: 4528913 (1985-07-01), Randolph
patent: 4538380 (1985-09-01), Colliander
patent: 4667966 (1987-05-01), Oehrle et al.
patent: 4768684 (1988-09-01), Dugge
patent: 4884723 (1989-12-01), Dugge

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