| 摘要 |
Portable apparatus for drawing small quantities of liquids, comprising a body 1 provided with a cylindrical cavity 2 in which a first piston 3 provided with a central channel 4 and a second piston 5 fitted with a return spring 6, a hollow removable needle 7 provided with an orifice 8 at its end and fixed to the end of the first piston 3 by a hollow screw 9 are positioned, characterised in that it is furthermore fitted with: - a connector 10 constituting a first end of an internal channel 11 allowing the apparatus to be connected to a pressurized gas source; - a nozzle 12 connected via its first chamber 13 by means of an internal channel 11a to the internal channel 11 via a valve 16, and connected via a second chamber 14, by means of an internal channel 15 to the part of the cylindrical cavity 2 situated between the top dead centre of the second piston 5 and the internal face of the first piston 3; and - a multivibrator distributor 17 whose function is to impart a reciprocating movement to the first piston 3. Application to drawing juice from fruits. <IMAGE>
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