Railroad hopper car discharge gate valve

Details Railroad hopper car discharge gate valve Railroad hopper car discharge gate valve

B - Operations, Transporting

61

D

105/133

B61D 7/00 (2006.01)

Patent

CA 2029946

RAILROAD HOPPER CAR DISCHARGE GATE DISCHARGE VALVE Abstract of the Disclosure A discharge valve for use in a railroad hopper car discharge gate is in the form of a longitudinally extending shaft positioned between the lips of the discharge gate slope sheets. The shaft is rotatable about its axis and has axially spaced and axially extending recessed areas. The recess areas are circumferentially non-aligned, but in part circumferentially overlapping. The shaft is rotatable between a full open position in which both recessed areas connect the gate interior and the trough beneath the slope sheets; a fully closed position; and two partially open positions in which one or the other of the recessed areas connects the gate interior with the discharge trough. The improvement of the invention is specific to the circumferential relationship between the recessed areas. These areas are disposed such that in the fully closed position, the longitudinal edges of each recessed area are substantially circumferentially beyond the spaced lips of the slope sheets such that slight rotation of the shaft in either direction will not result in the opening of either recess area to the interior of the discharge gate.

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