Patents by Inventor Alexandr Sergeevich Gaidarov

Alexandr Sergeevich Gaidarov 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).

  • Loudspeaker
    Patent number: 6516072
    Abstract: A module of loudspeaker 1 for high-quality reproduction of music and voice has a direct radiating base electrodynamic driver (EDD) 2 transforming an electric signal to acoustic one at least in the middle-frequency part of the acoustic frequency range and an enclosure cabinet 3 of this driver 2, the cone 5 of which overlaps the mounting hole in the outside surface of this cabinet.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: February 4, 2003
    Inventors: Alexei Vladimirovich Vinogradov, Alexandr Sergeevich Gaidarov
  • Loudspeaker
    Patent number: 5857027
    Abstract: The loudspeaker particularly comprises two-aperture radiator (1) containing paired in-phase counter-radiating apertures (4) and reproducing middle frequencies. Apertures (4) face each other, and their geometrical axis F is positioned vertically, while the distance between apertures (4) equals to at least the radius of aperture (4) but does not exceed the wavelength of the lowest frequency reproduced by paired apertures (4).
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: January 5, 1999
    Inventors: Alexandr Sergeevich Gaidarov, Alxei Vladimir Vinogradov