Patents by Inventor Erhard Graf

Erhard Graf 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: 4576355
    Abstract: Suspension hardware for suspended cabinets, particularly shelf elements, the device including a hardware housing which is attached to the rear wall of the cabinet and provided with adjustment means for an at least two-dimensional adjustment of the hardware housing with respect to the building wall while employing a screw disposed in the hardware housing. The end of the screw disposed in the interior of the cabinet is provided with engagement faces for an adjustment tool and the exterior end of the screw is provided with a head member for engaging behind a supporting strip. The length of the hardware housing approximately corresponds to the thickness of the rear wall of the cabinet. The hardware housing is provided with holding elements which rest against the front and rear of the rear wall of the cabinet and hold the hardware housing rotatably in the rear wall of the cabinet.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: March 18, 1986
    Assignee: Alno-Mobelwerke GmbH & Co. KG
    Inventor: Erhard Graf
  • Patent number: 4107623
    Abstract: A control device for accurately maintaining the frequency of a quartz crystal oscillator. The control device includes reference oscillators and two control loops in parallel, a first digital control loop providing coarse adjustment of the quartz oscillator frequency and a second, analog control loop providing fine adjustment.
    Type: Grant
    Filed: June 14, 1977
    Date of Patent: August 15, 1978
    Assignee: Oscilloquartz Sa
    Inventors: Erhard Graf, Jean-Pierre Wiedmer