Patents by Inventor Theodore P. Martin

Theodore P. Martin 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).

  • Elastic material for coupling time-varying vibro-acoustic fields propagating through a medium
    Patent number: 11056090
    Abstract: A device for use in a medium comprising a medium vibro-acoustic impedance. The device includes an elastic material including a plurality of unit cells. The plurality of unit cells includes a first unit cell. The first unit cell includes a first unit-cell joint comprising a first unit-cell joint wall defining a first joint central void, a first unit-cell joint inclusion located in the first joint central void, and at least two first unit-cell arms connected to and extending away from the first unit-cell joint. The elastic material includes an elastic-material vibro-acoustic impedance. The elastic-material vibro-acoustic impedance and the medium vibro-acoustic impedance are sufficiently vibro-acoustically impedance-matched to couple time-varying, propagating vibro-acoustic fields between said elastic material and the medium.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: July 6, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Theodore P. Martin, Charles Alan Rohde, Gregory Orris, Kristin Charipar, Alberto Piqué
  • Underwater acoustic leaky wave antenna
    Patent number: 10466353
    Abstract: A leaky-wave antenna for fluid environments includes a waveguide cavity defined by a waveguide wall. The waveguide cavity is filled with a waveguide fluid. The waveguide walls are made of either an anisotropic material that utilize one of orthotropic stiffness of the anisotropic material to control mode conversion, a band gap material to approximate an acoustically rigid boundary, and a combination of the two materials.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 5, 2019
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jeffrey Rogers, Katherine Woolfe, Matthew David Guild, Theodore P. Martin, Christina Jeanne Naify, Charles Alan Rohde
  • UNDERWATER ACOUSTIC LEAKY WAVE ANTENNA
    Publication number: 20190086536
    Abstract: A leaky-wave antenna for fluid environments includes a waveguide cavity defined by a waveguide wall. The waveguide cavity is filled with a waveguide fluid. The waveguide walls are made of either an anisotropic material that utilize one of orthotropic stiffness of the anisotropic material to control mode conversion, a band gap material to approximate an acoustically rigid boundary, and a combination of the two materials.
    Type: Application
    Filed: September 21, 2017
    Publication date: March 21, 2019
    Inventors: Jeffrey Rogers, Katherine Woolfe, Matthew David Guild, Theodore P. Martin, Christina Jeanne Naify, Charles Alan Rohde
  • ELASTIC MATERIAL FOR COUPLING TIME-VARYING VIBRO-ACOUSTIC FIELDS PROPAGATING THROUGH A MEDIUM
    Publication number: 20190035374
    Abstract: A device for use in a medium comprising a medium vibro-acoustic impedance. The device includes an elastic material including a plurality of unit cells. The plurality of unit cells includes a first unit cell. The first unit cell includes a first unit-cell joint comprising a first unit-cell joint wall defining a first joint central void, a first unit-cell joint inclusion located in the first joint central void, and at least two first unit-cell arms connected to and extending away from the first unit-cell joint. The elastic material includes an elastic-material vibro-acoustic impedance. The elastic-material vibro-acoustic impedance and the medium vibro-acoustic impedance are sufficiently vibro-acoustically impedance-matched to couple time-varying, propagating vibro-acoustic fields between said elastic material and the medium.
    Type: Application
    Filed: July 31, 2018
    Publication date: January 31, 2019
    Inventors: Theodore P. Martin, Charles Alan Rohde, Gregory Orris, Kristin Charipar, Alberto Piqué