US 7,320,260 B2
Pipetting device with a displacement device and a drive device releasably connected therewith
Herbert Belgardt, Hamburg (Germany)
Assigned to Eppendorf AG, Hamburg (Germany)
Filed on Jan. 20, 2005, as Appl. No. 11/38,799.
Claims priority of application No. 10 2004 003 434 (DE), filed on Jan. 21, 2004.
Prior Publication US 2005/0155438 A1, Jul. 21, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 1/00 (2006.01)
U.S. Cl. 73—864.14 19 Claims
OG exemplary drawing
 
1. Pipetting device with
a displacement device (36) with a displacement chamber (37) with a displaceable limiter (38), an attachment (34) for connecting to a pipette tip (56) and a connecting channel (44), the connecting channel (44) being between the displacement chamber (37) and the free end of the attachment (34),
a drive device (6, 7, 8) for driving the displaceable limiter (38) of the displacement device (36) comprising a drive member (7), the drive member (7) being in releasable cooperation with the displaceable limiter (38), and
a bayonet connection (19, 22, 30, 31) between the drive device (6, 7, 8) and the displacement device (36), the bayonet connection (19, 22, 30, 31) being established by creating the cooperation between the drive member (7) and the displaceable limiter (38) and the bayonet connection (19, 22, 30, 31) being released by releasing the cooperation between the drive member (7) and the displaceable limiter (38).