Microdosing device for the defined delivery of small self-contained liquid volumes

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United States of America Patent

APP PUB NO 20030003027A1
SERIAL NO

10204375

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Abstract

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The invention relates to a microdosing device for the defined delivery of small self-contained liquid volumes. The aim of the invention is to provide a cost-effective microdosing device (m) which enables a defined delivery of small self-contained liquid volumes with liquid volumes that can be freely selected from part by volume to part by volume in a relatively large range without, as a result, influencing the dwell time of the dispenser that moves in relation to the settling area. To this end, the invention provides that a supporting body (1) comprises at least one first channel (2) which is connected to a pressurization means (d) that permits the channel (2) to be pressurized with a variably predeterminable pneumatic pressure pulse. Said channel (2) is connected to at least one pressure compensating bypass (3), whereby the minimum opening cross-section of the bypass (3) is no greater than twice the opening cross-section of the channel (2), and the channel (2) is provided, on the end (21) opposite the pressurization side, with at least one second channel (5) which accommodates the liquid to the dispensed and whose smallest opening cross-section is smaller than that of the bypass (3).

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Patent Owner(s)

Patent OwnerAddress
INSTITUT FUER PHYSIKALISCHE HOCHTECHNOLOGIE E VHELMHOLTZWEG 4 D-07743 JENA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Albert, Jens Zeitz, DE 2 16
Brautigam, Rainer Jena, DE 1 12
Henkel, Thomas Jena, DE 40 288
Mayer, Gunter Jena, DE 23 124
Schober, Andreas Darmstadt, DE 33 163

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