Patents by Inventor Lars Parzanka

Lars Parzanka 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).

  • Door closer
    Patent number: 6421876
    Abstract: A door closer with an oblong, one-piece body such to achieve a compact and aesthetic unit which can be produced with a minimum material consumption. The door closer has lateral faces which each have a curvature and/or bevel that shapes towards each other, which curvature or bevel starts at the lower surface and ends at the upper surface of the door closer. The door closer also has bearing blocks that are built between their fronts and the lateral faces ascending from the body's lower surface.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 23, 2002
    Assignee: Dorma GmbH + Co. KG
    Inventors: Olaf Ginzel, Rainer Fengler, Lars Parzanka, Roger Migchielsen