Multichannel pipetting head

US12290805B2 · kind B2 · utility

Assignee

• Eppendorf AG · DE

Inventors

• Marc Wilth · Hamburg, DE
• Holger Link · Hamburg, DE

Key dates

• Filing date: Jul 2, 2021
• Grant date: May 6, 2025
• Expiry date: Oct 13, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01L2200/022
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A multichannel pipetting head comprises a plunger actuator comprising at least one groove with an upper border, and a lower border. A plurality of plunger-cylinder units, wherein each plunger-cylinder unit comprises a cylinder and a plunger comprising a plunger head. The plunger head comprises a projecting upper abutment region adjoining the upper border, a projecting lower abutment region adjoining the lower border and laterally offset relative to the projecting upper abutment region, a plurality of guides. Each of the cylinders is coupled to a neck and held on each of the plurality of guides. During lateral movement of the plurality of guides, the plunger head is configured to tilt in the groove and to be held with the upper abutment region abutting the upper border and with the lower abutment region abutting the lower border of the groove due to restoring forces that occur during tilting in the plunger-cylinder units.