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US 6,474,180 B2Granted
Pipette device
AssigneeHirschmann Laborgeräte GmbH & Co. KG
InventorHans-Jürgen Bigus
Life of this patent
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Abstract
In a pipette device comprising at least one pipette channel and at least one pump means, which cooperates with the pipette channel for suction and dispensed delivery of liquid, the pump means consists of two electrically driven micropumps each having one suction-side and one pressure-side connection, one of which is connected to the pipette channel via its suction side and the other via its pressure side. The pipette device thereby acts as an air cushion pipette and is preferably provided with current via solar cells.
Claims14
A pipette device for suctioning and dispensing liquid, the device comprising:
- at least one means defining a pipette channel;
- a first electrically operated micropump, said first micropump having a first suction-side connection and a first pressure-side connection;
- and
- a second electrically operated micropump, said second micropump having a second suction-side connection and a second pressure-side connection, wherein said first suction-side connection and said second pressure-side connection each communicate with said pipette channel, wherein an air cushion is disposed between liquid in said pipette channel and said first suction-side connection, said air cushion also being disposed between liquid in said pipette channel and said second pressure-side connection, with said first pressure-side connection and said second suction-side connection each being connected to a surroundings of the pipette device.
1 more element
Dependencies are inferred from the claim text.