Patents by Inventor Stefan Michelberger

Stefan Michelberger 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: 5020458
    Abstract: The sewing machine is used for looping or linking floor coverings and is transportable, so that, apart from being used in stationary manner, it can also be moved along the material edge to be looped. It produces a two-thread overcast seam and has a cutting device with a knife (108) for rounding the material corners prior to looping and is automatically started up under the control of a photoelectric cell (117) on approaching a corner.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: June 4, 1991
    Assignee: Maximilian Janser
    Inventor: Stefan Michelberger
  • Patent number: 4062307
    Abstract: A portable integral compact rug binding machine which may be guided along the outside edge of a carpet to be bound by means of a handle is disclosed. The rug binding machine is provided with a vertically mounted drive motor and a low or close to the floor base member wherein a portion or zone of the carpet being bound curves up and over the base plate or support means without need for folding the carpet back over its entire length. The binding machine performs the binding operation with the use of a single binding thread fed to the needle from above. A driven carrier roll is provided for moving the carpet with respect to the binding needle, and in one embodiment, an adjustable pressure roller is provided for enabling binding around curved edges of the carpeting.
    Type: Grant
    Filed: December 30, 1975
    Date of Patent: December 13, 1977
    Assignee: Firma Maximilian Janser
    Inventor: Stefan Michelberger