Patents by Inventor Francois Malgat

Francois Malgat 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).

  • Demagnetizing device having an oscillating permanent magnet
    Patent number: 4851945
    Abstract: A demagnetizing device for demagnetizing a sound head in a cassette tape recorder, comprises a cassette type housing. A carrier member pivotal in the housing carries a permanent magnet which oscillates with the carrier member sidewardly across an opening in the housing adjacent the sound head of the cassette tape recorder to demagnetize the sound head. A cam driven by a spindle of the cassette tape recorder acting on a follower drives the carrier member with oscillating movement.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: July 25, 1989
    Assignees: Joseph F. Fritsch, Roxanne Y. Fritsch
    Inventors: Joseph F. Fritsch, Roxanne Y. Fritsch, Francois Malgat