Patents by Inventor Pierre R. Valenzuela

Pierre R. Valenzuela 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).

  • Pressure vessel testing fixture
    Patent number: 6253599
    Abstract: Opposing end fittings of a cylindrical tube pressure test fixture uses slanted abutting surfaces between retaining rings and ferrules that securely clamps a tube under high pressure testing. Retaining ring and ferrule friction and applied radial compression induce shear force upon the tube and prevent leaks during pressure testing.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: July 3, 2001
    Assignee: The Aerospace Corporation
    Inventors: Dick J. Chang, Pierre R. Valenzuela
  • Honeycomb shear testing method
    Patent number: 6178825
    Abstract: A shear test fixture and method determines the shear strength of a honeycomb having elongated cells extending between two ends filled with a filler material with a load applied to one end relative to the other end introducing shear stress without introducing compression or tension stress for improved shear strength testing.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: January 30, 2001
    Assignee: The Aerospace Corporation
    Inventors: Dick J. Chang, Pierre R. Valenzuela, Richard P. Welle