Closure flap

Dispensing – Processes of dispensing

Patent

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Details

222500, 222504, 222556, B67B 700

Patent

active

056556837

ABSTRACT:
The invention relates to a process and an apparatus for closing and/or opening a hopper or container (5) with a bottom outlet. 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). 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).

REFERENCES:
patent: 2501743 (1950-03-01), Schellentrager
patent: 3906850 (1975-09-01), Papai

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