Patents by Inventor Daniel Fingerhut

Daniel Fingerhut 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).

  • Sound absorber having helical fixtures
    Patent number: 8312962
    Abstract: A sound absorber comprises an elongated gas channel, through which a flowing gas passes in operation of the sound absorber; and at least one helical fixture mounted in a longitudinal section of the gas channel. The helical fixture defines a helical gas passage through the longitudinal section of the gas channel. Further, the helical fixture defines at least one longitudinal Helmholtz resonator within the gas channel which is excited by sound waves propagating in the flowing gas passing through the at least one gas channel.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: November 20, 2012
    Assignee: Deutsches Zentrum fur Luft-und Raumfahrt E.V.
    Inventors: Jörg Melcher, Daniel Fingerhut, Christian Melcher
  • SOUND ABSORBER HAVING HELICAL FIXTURES
    Publication number: 20110308884
    Abstract: A sound absorber comprises an elongated gas channel, through which a flowing gas passes in operation of the sound absorber; and at least one helical fixture mounted in a longitudinal section of the gas channel. The helical fixture defines a helical gas passage through the longitudinal section of the gas channel. Further, the helical fixture defines at least one longitudinal Helmholtz resonator within the gas channel which is excited by sound waves propagating in the flowing gas passing through the at least one gas channel.
    Type: Application
    Filed: August 5, 2011
    Publication date: December 22, 2011
    Applicant: Deutsches Zentrum fur Luft-und Raumfahrt e.V.
    Inventors: Jörg Melcher, Daniel Fingerhut, Christian Melcher