Patents by Inventor Winfried Grimbach

Winfried Grimbach 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).

  • Low-leakage pot magnet system for moving-coil loudspeakers
    Patent number: 4465906
    Abstract: A low-leakage pot magnet system for moving-coil loudspeakers having two permanent magnets of opposite polarity is accomplished by spacing the lower permanent magnet away from the bottom of the screen pot by an appropriate support which includes a disk or plate of nonmagnetic material arranged between the lower permanent magnet body and the bottom of the screen pot.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: August 14, 1984
    Assignee: Magnetfabrik Bonn GmbH Vormals Gewerkschaft Windhorst
    Inventors: Kurt Adolph, Winfried Grimbach