B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 43/18 (2006.01) B65D 43/26 (2006.01) B65D 90/62 (2006.01)
Patent
CA 2143964
The invention relates to a process for closing and/or opening a hopper or container (5) with a bottom outlet, wherein a flap (7) fastened to at least one lever mechanism (2) is urged toward a closed position by means of a counterweight (6) mounted on the opposite end of the lever mechanism (2), and wherein at least one driving element (9) operatively connected to the shaft (8) supporting the lever mechanism (2), via a partial free wheel mechanism composed of a pair of conditional forcible drive members (3, 4) mounted on the shaft, promotes the closing of the flap (7) when the force of gravity acting on the counterweight does not bring the flap to the fully closed position. After the filling of the container (5) is completed, the partial free wheel or the conditional forcible drive (3) facilitates the opening of the container (5) outlet by deactuating the drive element (9) to release the lever mechanism (2) so that the flap (7) can be opened by the force of gravity acting on the material in the container resting on the flap (7).
Borden Ladner Gervais Llp
Filterwerk Mann & Hummel Gmbh
LandOfFree
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