Patents by Inventor Janet M. Hogan

Janet M. Hogan 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).

  • Acoustic barrier support structure
    Patent number: 9284727
    Abstract: An acoustic barrier structure can include a support structure that defines a plurality of cells, a weight attached to the support structure, and at least one resonant membrane covering one of the plurality of cells. The at least one resonant membrane can comprise at least one weight. The at least one resonant membrane can have an anti-resonant frequency and the support structure with the weight can provide wide frequency band gaps between odd resonance modes while suppressing structure-membrane coupled modes to enable the anti-resonance of the at least one resonant membrane.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 15, 2016
    Assignee: The Boeing Company
    Inventors: Geoffrey P. McKnight, Chia-Ming Chang, Tiffany A. Stewart, Joshua M. Montgomery, Janet M. Hogan, Thomas A. Zientek, Douglas R. Ludin
  • Hybrid acoustic barrier and absorber
    Patent number: 9270253
    Abstract: A hybrid acoustic absorption and reflection resonator can includes a rigid structure defining a cell, a membrane with at least one orifice attached to the rigid structure, and a back sheet attached to the rigid structure and covering the cell. The membrane is configured to reflect acoustic waves in a predetermined range of frequencies. The rigid structure, the membrane, and the back sheet define a Helmholtz cavity; the Helmholtz cavity is configured to absorb acoustic energy at a frequency within the predetermined range of frequencies.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: February 23, 2016
    Assignee: The Boeing Company
    Inventors: Chia-Ming Chang, Geoffrey P. McKnight, Janet M. Hogan, Joshua M. Montgomery
  • HYBRID ACOUSTIC BARRIER AND ABSORBER
    Publication number: 20150047923
    Abstract: A hybrid acoustic absorption and reflection resonator can includes a rigid structure defining a cell, a membrane with at least one orifice attached to the rigid structure, and a back sheet attached to the rigid structure and covering the cell. The membrane is configured to reflect acoustic waves in a predetermined range of frequencies. The rigid structure, the membrane, and the back sheet define a Helmholtz cavity; the Helmholtz cavity is configured to absorb acoustic energy at a frequency within the predetermined range of frequencies.
    Type: Application
    Filed: September 25, 2014
    Publication date: February 19, 2015
    Inventors: Chia-Ming Chang, Geoffrey P. McKnight, Janet M. Hogan, Joshua M. Montgomery
  • ACOUSTIC BARRIER SUPPORT STRUCTURE
    Publication number: 20150027807
    Abstract: An acoustic barrier structure can include a support structure that defines a plurality of cells, a weight attached to the support structure, and at least one resonant membrane covering one of the plurality of cells. The at least one resonant membrane can comprise at least one weight. The at least one resonant membrane can have an anti-resonant frequency and the support structure with the weight can provide wide frequency band gaps between odd resonance modes while suppressing structure-membrane coupled modes to enable the anti-resonance of the at least one resonant membrane.
    Type: Application
    Filed: September 25, 2014
    Publication date: January 29, 2015
    Inventors: Geoffrey P. McKnight, Chia-Ming Chang, Tiffany A. Stewart, Joshua M. Montgomery, Janet M. Hogan, Thomas A. Zientek, Douglas R. Ludin
  • Acoustic barrier support structure
    Patent number: 8869933
    Abstract: An acoustic barrier structure can include a support structure that defines a plurality of cells, a weight attached to the support structure, and at least one resonant membrane covering one of the plurality of cells. The at least one resonant membrane can comprise at least one weight. The at least one resonant membrane can have an anti-resonant frequency and the support structure with the weight can provide wide frequency band gaps between odd resonance modes while suppressing structure-membrane coupled modes to enable the anti-resonance of the at least one resonant membrane.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: October 28, 2014
    Assignee: The Boeing Company
    Inventors: Geoffrey P. McKnight, Chia-Ming Chang, Tiffany A. Stewart, Joshua M. Montgomery, Janet M. Hogan, Thomas A. Zientek, Douglas R. Ludin
  • Hybrid acoustic barrier and absorber
    Patent number: 8857563
    Abstract: A hybrid acoustic absorption and reflection resonator can includes a rigid structure defining a cell, a membrane with at least one orifice attached to the rigid structure, and a back sheet attached to the rigid structure and covering the cell. The membrane is configured to reflect acoustic waves in a predetermined range of frequencies. The rigid structure, the membrane, and the back sheet define a Helmholtz cavity; the Helmholtz cavity is configured to absorb acoustic energy at a frequency within the predetermined range of frequencies.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: October 14, 2014
    Assignee: The Boeing Company
    Inventors: Chia-Ming Chang, Geoffrey P. McKnight, Janet M. Hogan, Joshua M. Montgomery