| 摘要 |
The device comprises pumping means P formed by a body 16 and a piston 17. The device comprises guidance means G intended to be mounted on the receptacle 2, and the body 16 of the pumping means P is mounted on these guidance means, so as to be able to move, while being guided thereby, with respect to the receptacle, under the action of control means C provided for this purpose, the piston 17 being connected to a rod 30 which comprises, at its end distant from the piston, a stop 31 capable of interacting with the guidance means G, in order to oppose the motion of the piston 17 with respect to the receptacle 2, when the body 16 is moved towards this receptacle, the said body 16 being connected to a connection piece T which dips into the receptacle 2, so that, when the body 16 is moved, the piston remaining static, a pressure reduction is created in the body and allows the metered quantity of the product to be taken, the body then being retracted from the guidance means G. <IMAGE>
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