Patents by Inventor Rainer-Burkhard Franke

Rainer-Burkhard Franke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Measuring and pipetting device
    Patent number: 4084730
    Abstract: Disclosed is a pipette device which accommodates a detachable filling device and a detachable piston. The stroke length of the piston is determined by the selective engagement of an abutment, movable with the piston, with stepped surfaces cut into a sleeve movable within an enclosing housing. A control member accessible at the housing exterior is angularly shifted to move the sleeve and thus select the step with which the abutment will engage, thereby determining the length of the working stroke of the piston.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: April 18, 1978
    Assignee: Labora Mannheim GmbH fur Labortechnik
    Inventors: Rainer-Burkhard Franke, Adolf Hirschmann, Klaus Kaser