Patents by Inventor David B. Larrabee

David B. Larrabee 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).

  • Fluidborne sound projector with sweep cleaning facilities
    Patent number: 6751161
    Abstract: An acoustic projector device having a piston exposed to pressure balanced air and water in an acoustically ideal position thereof within a piston chamber enclosing sleeve disposed in an outer housing to which deaerating water is selectively supplied in surrounding relation to the piston chamber sleeve while in communication with one side of the piston through axial slots in the sleeve uncovered by displacement of the piston from said acoustically ideal position.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: June 15, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John W. Henry, IV, David B. Larrabee, William F. Flickinger, Michael J. Grady, Debra M. Kenney, Kevin E. Crouchley
  • Fluidborne sound projector
    Patent number: 6320821
    Abstract: A fluidborne projector of sound derived from an electro-mechanical noise source translates acoustical energy through a piston subjected to balanced pressures of gas and liquid to enabled dynamic displacement thereof. Such displacement of the piston to a static position is regulated by controlled pressurization of gas, mechanically limited to prevent damage from changing pressures exerted on the piston.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: November 20, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jeffrey S. Goldring, David B. Larrabee, John W. Henry, IV