Railcar gravity multi-ply outlet seal for sliding doors
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United States of America Patent
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-
Jan 11, 1994
Grant Date -
N/A
app pub date -
Jun 18, 1992
filing date -
Jun 18, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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