Patents by Inventor Walter Fraklin

Walter Fraklin 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).

  • Pressurized sandwich skin for cryogenic propellant tanks
    Publication number: 20020179610
    Abstract: A wall of a cryogenic propellant tank includes inner and outer skins supported parallel to, and at a distance from, one another to define between them a zone into which pressurized gas is introduced. The zone houses a reinforcing structure, such as honeycomb or corrugated material, to create a sandwich structure. The gas is introduced into the zone using conduits in the reinforcing structure. The gas preferably is an inert gas, most preferably helium.
    Type: Application
    Filed: June 4, 2001
    Publication date: December 5, 2002
    Applicant: Lockheed Martin Corporation
    Inventors: Walter Fraklin, David A. Hooke