| 摘要 |
According to the invention, the neckstand (4) comprises, beyond its juxtaposed bearing notches (9), a dorsal extension having a length of between 0.4 and 0.6 times the distance (S) between the hinge pin (3) of the neckstand (4) and that face (9a) of the notches which rests on the rim of the container, this extension being such that it can be held and its end (4c) pressed against the neck (11) of the container by the operator's hand, operating the handle (2) with the other hand, while said face (9a) of each notch (9) forms, with respect to the web (4a) of the neckstand (4), an angle (b) of between 75° and 85°, in order that it is the end of each notch (9) that first bears on the rim of the container.
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