B - Operations – Transporting – 01 – L
Patent
B - Operations, Transporting
01
L
B01L 3/02 (2006.01)
Patent
CA 2147927
The invention relates to A repetition pipette including a syringe receiving section for the mounting portion of a syringe, a receiving member having a piston receiving portion for the mounting portion of a syringe piston, piston returning means for moving said receiving member away from said syringe receiving portion, piston advancing means for advancing said receiving member towards said piston receiving portion, which piston advancing means comprises a rack connected to said receiving member, and actuating element movable along an actuation path, and a pawl pivotally mounted thereto, which pawl is moved into engagement with the toothing of the rack so as to drive the latter for an advancing step when the actuating element is advanced, and is moved out of engagement with the rack when the actuating element is returned, and step width adjusting means for adjusting the step width of the advancing step, the step width adjusting means comprising a withholding element displaceable along the rack by means of an adjust- ing element for preventing the pawl from engaging the rack, characterized by stroke limiting means controlled by the step width adjusting means so as to increase the stroke length of the actuating element when the step width in- creases and to decrease the stroke length of the actuating element when the step width decreases.
Belgardt Herbert
Meyer Rolf-Gunter
Schurbrock Klaus
Eppendorf-Netheler-Hinz Gmbh
Fetherstonhaugh & Co.
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