Pipetting device having a linear motor

US9180447B2 · kind B2 · utility

Assignee

• HAMILTON BONADUZ AG · CH

Inventors

• Andreas Schlegel · Echterdingen, DE
• Hanspeter Romer · Hinwil, CH

Key dates

• Filing date: Dec 23, 2011
• Grant date: Nov 10, 2015
• Expiry date: Nov 6, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2035/1069
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a pipetting device, comprising at least two pipetting channels (50, 50′), which extend along a channel axis (K) and which each can be adjusted along the channel axis (K), wherein the pipetting device (10) has a displacement drive, by means of which each pipetting channel (50, 50′) can be displaced independently of the other pipetting channel (50, 50′) along a displacement axis (V) orthogonal to the channel axis (K) regardless of an adjustment along the channel axis (K), wherein the displacement drive comprises a linear motor, the stator of which has at least two magnet arrangements (32, 42), which comprise a row of magnets (36) on a magnet carrier (34, 44), said magnets being consecutive along the displacement axis (V) and being arranged differently with regard to the polarity (P1, P2) thereof, and the armature of which (at 38, at 38′); has at least one conductor loop arrangement (38), which comprises at least one set of three conductor loops (72, 74, 76) that are consecutive along the displacement axis (V), each of which conductor loops is or can be associated with a different phase of a three-phase supply, wherein each pipetting channel (50, 50′) has at l…