Patents by Inventor Wilhelm Kracke

Wilhelm Kracke 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).

  • Multi-layered sound-insulating panel for motor vehicles, or similar
    Patent number: 5013597
    Abstract: A multi-layered sound-insulating panel for motor vehicles, or similar, consisting of at least one dense layer and one resilient layer between the dense layer and the part of the motor vehicle, or similar, to which the panel is attached, makes it possible--while achieving the acoustic effect required--to realize a design weighing as little as possible, provided the resilient layer has a special shape on account of recesses and/or indentations, and/or knobs, fashioned on purpose.
    Type: Grant
    Filed: September 16, 1986
    Date of Patent: May 7, 1991
    Assignee: Sony Corporation
    Inventor: Wilhelm Kracke
  • Sound-absorbing wall-lining
    Patent number: 4463049
    Abstract: It should be possible to manufacture, in a simple manner, a sound-absorbing wall-lining (3) consisting of a material to be applied to the wall which needs lining, and a resilient layer (4, 5) of foam, e.g. foam rubber, felt, or similar material, having locally distinctive sound-absorbing capacities, and whose thickness will possibly remain uniform, provided the resilient layer (4, 5) contains a filler with locally distinctive degrees of cross-linking--corresponding to distinctive sound-absorbing capacities.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: July 31, 1984
    Assignee: Dr. Alois Stankiewicz Schallschluck GmbH & Co.
    Inventor: Wilhelm Kracke