Patents by Inventor Norbert Hammerl

Norbert Hammerl 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).

  • Proportioning apparatus for viscous materials
    Patent number: 5671873
    Abstract: A proportioning apparatus for viscous materials comprises a proportioning cylinder which has an inlet and an outlet. The proportioning cylinder houses a delivery piston actuable by way of an actuating rod. The latter is drivable by an electric motor, which is connected with the actuating rod by way of a crank drive.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: September 30, 1997
    Assignee: Ludwig Schwerdtel GmbH
    Inventors: Norbert Hammerl, Horst Fleischer