Patents by Inventor Gary Warner Green

Gary Warner Green 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 absorption with variable acoustic resistance means
    Patent number: 3991849
    Abstract: A system for varying the acoustic resistance of an acoustical lining disposed in a duct of an air propulsor comprises a nonlinear sound suppression liner having a porous facing sheet overlying a plurality of cells, header means communicating with each of the cells and air pumping means for forcing a predetermined steady flow of air sequentially through the header means, the cells and the facing sheet to vary the acoustic resistance of the facing sheet to make it optimum for a selected sound level and airflow condition in the duct.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: November 16, 1976
    Assignee: United Technologies Corporation
    Inventors: Gary Warner Green, Ernest Feder
  • Sound absorption with variable acoustic resistance means by oscillatory air pressure signal
    Patent number: 3972383
    Abstract: A system for varying the acoustic resistance of an acoustical lining disposed in a duct of an air propulsor comprises a nonlinear sound suppression liner having a porous facing sheet overlying a plurality of cells and means for impinging a predetermined oscillatory air pressure signal of 100-160 dB at an inaudible frequency on the facing sheet to vary the acoustic resistance of the facing sheet to make it optimum for a selected sound level and airflow condition in the duct.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: August 3, 1976
    Assignee: United Technologies Corporation
    Inventor: Gary Warner Green