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

B - Operations, Transporting

61

D

105/133

B61D 7/02 (2006.01) B61D 7/16 (2006.01) B61D 7/26 (2006.01) B65D 90/62 (2006.01)

Patent

CA 1158478

CONTROLLED-DISCHARGE DOOR FOR PARTICULATE MATERIALS AND LIQUIDS Abstract A controlled-discharge door assembly for particulate material or liquids includes a door member (30) with a curved surface engaged by a large diameter roller (46) mounted to a pivotable lever (40,41). The roller diameter (46) is large in comparison to the length of the lever arm (40,41) and provides variable torque multiplication as the roller moves along the curved surface of the door (30) so that greater force is applied against the door when it is nearly closed. Resilient seals (65, 70) are provided around the door opening, the seal compressed by the discharge doors during closing to prevent leakage. The lever (40,41) is moved over-center to hold the door (30) in a locked position.

370607

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