Patents by Inventor Donald M. Chave

Donald M. Chave 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).

  • Electrical/mechanical transducers
    Patent number: 4461933
    Abstract: A speech coil 3 in for example a moving-coil type loudspeaker includes a layer of magnetizable material 1 such as plastics tape impregnated with ferric oxide. The tape is wound on to a former 2 and moves with the coil to provide magnetic damping to more accurately center the coil and reduce overshoot of the coil in response to current peaks.
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: July 24, 1984
    Inventor: Donald M. Chave