Patents by Inventor Francise E. Levert

Francise E. Levert 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).

  • Fluid flow system for spring-cushioned shoe
    Publication number: 20030192201
    Abstract: A fluid flow system for a spring-cushioned shoe is disclosed. The sole of the shoe includes a vacuity, a spring disposed within the vacuity, and a fluid passageway in fluid communication with the vacuity. The fluid flow passageway allows fluid, such as air, to escape the vacuity when the volume of the vacuity is reduced during a foot strike.
    Type: Application
    Filed: May 14, 2003
    Publication date: October 16, 2003
    Inventors: Francise E. Levert, David S. Krafsur