Patents by Inventor James C. George

James C. George 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).

  • Honeycomb sandwich structure having dissimilar metal face sheets
    Patent number: 4925721
    Abstract: The invention is a honeycomb structure suitable for use with cryogenic materials. In detail, the invention comprises a honeycomb sandwich structure 10 having a titanium core 14, a first face sheet 12 made of aluminum alloy suitable for high-temperature applications, and a second face sheet 16 made of titanium bonded together by a high-temperature thermoplastic adhesive. Preferably the core 14 is made of Ti-15V-3Cr-3Sn-3 aluminum, Ti-6Al-4V and/or Ti-3Al-2.5V. The first face sheet 12 is, preferably, made out of Al-8Fe-7Ce, Al-13Fe-4.6V, Al-1OFe-1Mo1V and Al-6Fe-6Ni-2Cr or other aluminum alloys suitable for use at temperatures in excess of 600.degree. F. The second face sheet 16 is, preferably, made of Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo or Ti-15V-3Cr-3Sn-3Al. Preferably, the adhesive 18a, 18b is a thermoplastic material such as polyetheretherketone, polyphenylquinoxaline or a polyamide-imide.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: May 15, 1990
    Assignee: Lockheed Corporation
    Inventors: Jan Harper-Tervet, Rod F. Simenz, James C. George