Mechanical piston pipette

Details Mechanical piston pipette Mechanical piston pipette

2007-04-17

2007-04-17

Raevis, Robert (Department: 2856)

Measuring and testing

Sampler, sample handling, etc.

Capture device

Reexamination Certificate

active

10916359

ABSTRACT:
The mechanical piston pipette comprises a pipette body, a piston/cylinder assembly, the cylinder being arranged so as to be able to be equipped with a replaceable tip, and a tip ejector device, movable along the cylinder in order to eject a tip from the end of the cylinder. The pipette body accommodates an ejection actuation device and a piston actuation device (3, 4, 7) effecting given longitudinal translational travel between a low limit stop position and a high limit stop position in order to perform the aspiration of an adjustable volume of liquid, with means of modifying said travel, means (4) of adjusting the pipetted volume, means (8e,8f,8g) of displaying the pipetted volume and calibration means. Said adjustment means, said display means and said calibration means cooperate as an adjustment and calibration device (8) in which, during a calibration operation, said display means are regulated so as to make the displayed volume equate with the pipetted real volume and said adjustment and calibration device (8) is housed inside the pipette body.

REFERENCES:
patent: 5413006 (1995-05-01), D Autry
patent: 5531131 (1996-07-01), Sabloewski
patent: 5650124 (1997-07-01), Gilson
patent: 5792424 (1998-08-01), Homberg
patent: 5998218 (1999-12-01), Conley et al.
patent: 6295880 (2001-10-01), Gilson
patent: 0153058 (1985-08-01), None
patent: 1197264 (2002-04-01), None
patent: 2807343 (2001-10-01), None

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