Patents by Inventor H. Bernard Mathes

H. Bernard Mathes 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).

  • Axial acoustic wave attenuator for ramjets
    Patent number: 4494625
    Abstract: Apparatus for attenuating upstream gas motion induced by axial acoustic ws in a ramjet engine includes a series of hollow truncated conical attenuators acting to both modify and enhance fuel-oxidizer mixing and offering negligible resistance to downstream gas motion while offering substantial resistance to upstream gas motion within the engine.
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: January 22, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: H. Bernard Mathes
  • Solid propellant measurement system
    Patent number: 4409821
    Abstract: An apparatus for measuring the burning rate of solid propellants utilizes a homodyne radar to illuminate the propellant grain from a non-burning surface to obtain a distance measurement of the dimensions of the burning mass.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: October 18, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James W. Battles, H. Bernard Mathes