Patents by Inventor Herbert Piribauer

Herbert Piribauer 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).

  • Headphone operating on the two-way system
    Patent number: 3943304
    Abstract: The headphone comprises a low frequency transducer system and a high frequency transducer system, with the low frequency transducer system including an electrodynamic transducer. The high frequency transducer system includes an electrostatic transducer, and a supply transformer for the high frequency transducer system is mounted in the housing of the headphone. The two transducer systems are mounted coaxially of each other, with the high frequency transducer system being outwardly of the low frequency transducer system. The high frequency system may have a disc form or may have an annular form and, in the latter case, the inner diameter of the high frequency system corresponds to the outer diameter of the low frequency system which is received in a circular recess of the high frequency system.
    Type: Grant
    Filed: June 12, 1974
    Date of Patent: March 9, 1976
    Assignee: AKG Akustische u Kino-gerate Gesellschaft m.b.H.
    Inventor: Herbert Piribauer