Patents by Inventor Hellmuth Grunert

Hellmuth Grunert 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).

  • Parallel rod furniture hinge
    Patent number: 3940829
    Abstract: This disclosure relates to a hinge for abutting door sashes and particula a furniture hinge in which a linkage is provided in the form of a pair of rods pivotally mounted between mounting parts of an associated frame and sash, each radius rod having an end within a large diameter trunnion of a thickness greater than that of the associated rods, and each trunnion engaging in a corresponding bore of the sash.
    Type: Grant
    Filed: March 15, 1974
    Date of Patent: March 2, 1976
    Assignee: Prameta Prazisionsmetall -und Kunststofferzeugnisse G. Baumann & Co.
    Inventors: Hellmuth Grunert, Theodor Vitt