Patents Assigned to Labsystems, Ltd.
  • Patent number: 5696330
    Abstract: The invention relates to a pipette used for dosing of liquids. The most characteristic feature of the pipette is that in order to remove the liquid as completely as possible, the dosing piston (18) is pressed first into a low position below the basic position, after which an additional removing phase is carried out using a separate removing piston (13), so that the piston area that affects the liquid container (3) is greater during the additional removing phase. This way, a pressure stroke is formed, which effectively and reliably removes even the droplet that easily remains at the tip of the container. Most preferably, both the removing piston and the dosing piston move in the additional removing phase.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: December 9, 1997
    Assignee: Labsystems, Ltd.
    Inventor: Mauno Heinonen