US 12,434,233 B2Granted

Pipetting device

AssigneeBrand GmbH + Co KG

InventorsOttmar Kneucker, Markus Kurz, Florian Metz, Dieter Böhm

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Abstract

A pipetting device for taking up and dispensing fluid volumes has a displacement device with a displacement mechanism and a displacement housing. The pipetting device has an adjusting device for changing the stroke of the displacement mechanism. The stroke of the displacement mechanism can be adjusted, and the corresponding adjustment value can be displayed by an adjustment indicator. A coupling device, in a use state, couples the adjusting device to a volume indicator and decoupled the adjustment device from the adjustment indicator. In an adjustment state, the adjusting device is coupled to the adjustment indicator and is decoupled from the volume indicator. The adjustment indicator displays an adjustment value for the stroke of the displacement means. The adjustment indicator can be adjusted in an adjustment state, whereas it is fixed in a use state.

Claims20

Dependent claims

A pipetting device for taking up and dispensing fluid volumes, comprising:

a displacement apparatus having a displacement device and a displacement housing,
a drive device for moving the displacement device in the displacement housing,
wherein movement of the displacement device is limited by an upper stop, a lower stop and at least one counter stop of the drive device, so that a stroke of the displacement device is defined,
a volume indicator for displaying a pipetting volume associated with the stroke of the displacement device and/or correlated with the stroke of the displacement device,
an adjusting device to change the stroke of the displacement device,
an adjustment indicator for indicating an adjustment value of the stroke of the displacement device, and
a coupling device which
in a use state couples the adjusting device to the volume indicator and decouples the adjusting device from the adjustment indicator, whereby an actuation of the adjusting device causes a change of the volume indicator but not of the adjustment indicator, and
in an adjustment state couples the adjusting device to the adjustment indicator and decouples the adjusting device from the volume indicator, whereby an actuation of the adjusting device causes a change of the adjustment indicator but not of the volume indicator.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/852,431Filed 29 Jun 2022
Priority: DE 102021117126.12 Jul 2021
Published: US 2023/0001403 A15 Jan 2023
Granted: 7 Oct 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B01L 3/0224
Of the plunger pump type: having mechanical means to set stroke length, e.g. movable stops
B01L 3/0237
Of the plunger pump type: details of electronic control, e.g. relating to user interface
B01L 2200/148
Process control and prevention of errors: specific details about calibrations
B01L 2300/025
Identification, exchange or storage of information: displaying results or values with integrated means