Patents by Inventor Gerhard Birkle

Gerhard Birkle 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).

  • Patent number: 7900850
    Abstract: A microdosing apparatus and method include a fluid conduit having a flexible tube with a first end for connecting to a fluid reservoir and a second end where an outlet opening is located. An actuating device with a displacer with an adjustable stroke is provided, by which the volume of a portion of the flexible tube can be changed to thereby dispense liquid as free flying droplets or as a free flying jet at the outlet opening by moving the displacer between a first end position and a second end position, whereby the tube is partly compressed in the first or the second end position.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: March 8, 2011
    Inventors: Roland Zengerle, Peter Koltay, Wolfgang Streule, Gerhard Birkle
  • Publication number: 20060147313
    Abstract: A microdosing apparatus comprises a fluid conduit having a flexible tube with a first end for connecting to a fluid reservoir and a second end where an outlet opening is located. An actuating device with a displacer with adjustable hub is provided, by which the volume of a portion of the flexible hub can be changed to thereby dispense liquid as free flying droplets or as free flying jet at the outlet opening by moving the displacer between a first end position and a second end position, whereby the tube is partly compressed in the first or the second end position. In other words, a microdosing apparatus comprises fluid conduit having a portion along which a cross section of the fluid conduit is variable by an actuating device to effect a change of the volume of the fluid conduit.
    Type: Application
    Filed: February 14, 2006
    Publication date: July 6, 2006
    Inventors: Roland Zengerle, Peter Koltay, Wolfgang Streule, Gerhard Birkle