Patents by Inventor Thomas L. Cadawas

Thomas L. Cadawas 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).

  • Phonograph tone arm suspension
    Patent number: 4423501
    Abstract: A phonograph tone arm suspension system in which the cantilevered tone arm is supported by a resilient member. First and second attachment means are provided for the resilient member on the tone arm and on a vertical support member, respectively, which attachment means are positionally adjustable so as to permit variation in the vertical component of the supporting resilient member and in the vertical compliance of the tone arm.
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: December 27, 1983
    Inventor: Thomas L. Cadawas
  • Loudspeaker enclosure with acoustically coupled loudspeaker damper
    Patent number: 4145571
    Abstract: A loudspeaker system is described in which a driven speaker is acoustically coupled in the speaker enclosure with a variable acoustical damper, the damper having an acoustical cone, the movement of which is dampened by an induction coil connected across variable resistance means.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: March 20, 1979
    Inventor: Thomas L. Cadawas