Controlled-discharge door for particulate materials and liquids

Details Controlled-discharge door for particulate materials and liquids Controlled-discharge door for particulate materials and liquids

1980-04-21

1982-04-20

Bertsch, Richard A.

Railway rolling stock

Special car bodies

Dumping

105282A, E01D 702, E01D 718

Patent

active

043253083

ABSTRACT:
A controlled-discharge door assembly for particulate material or liquids includes a door member with a curved surface engaged by a large diameter roller mounted to a pivotable lever. The roller diameter is large in comparison to the length of the lever arm and provides variable torque multiplication as the roller moves along the curved surface of the door so that greater force is applied against the door when it is nearly closed. Resilient seals are provided around the door opening, the seal compressed by the discharge doors during closing to prevent leakage. The lever is moved over-center to hold the door in a locked position.

REFERENCES:
patent: 1312465 (1919-08-01), Zaun
patent: 1627256 (1927-05-01), Smith
patent: 3596608 (1971-08-01), Aquino
patent: 3650221 (1972-03-01), Nagy
patent: 3831803 (1974-08-01), Hutchison

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