Patents by Inventor Vladimir F. Vinogradov

Vladimir F. Vinogradov 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).

  • Tone arm
    Patent number: 4434483
    Abstract: A tone arm comprising a lever with a pickup cartridge on its end and a tracking-force setup assembly, a movable base connected to the lever, and a fixed base, the two bases facing each other. Installed between said bases are a vertical pivot attached to one of the bases and cooperating with a spherical thrust bearing in the other base, and a ball making contact with one of the bases and cooperating with a guiding element in the other base. The guiding element may represent an arched slot, two equidistant arched lugs or a spherical hole.
    Type: Grant
    Filed: November 27, 1981
    Date of Patent: February 28, 1984
    Inventor: Vladimir F. Vinogradov
  • Tone arm
    Patent number: D282839
    Type: Grant
    Filed: April 20, 1982
    Date of Patent: March 4, 1986
    Inventors: Vladimir F. Vinogradov, Juris Z. Dreimanis, Aivars A. Kruklis, Dzintars A. Kave