Patents by Inventor Edwin Doll Lowthian

Edwin Doll Lowthian 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).

  • Composite structures of knitted glass fabric and thermoplastic polyfluoroethylene resin sheet
    Patent number: 3934064
    Abstract: Extensible structures are made by partially embedding a selected knitted glass fabric into a perhalopolyfluoroethylene polymer resin sheet. The embedding can be done by pressing the glass fabric into one surface of the sheet heated to a temperature at which it is soft. The resultant composite structure is thermoformable into such shapes as a dished head. The exposed surface of the glass fabric can be impregnated with a castable material useful for such purposes as adhering the composite structure to a substrate such as a metal surface or for reinforcing the composite structure. The composite structure instead of being thermoformed can be rolled and seamwelded into a cylinder shape which can be used as a cylindrical tank lining or as a duct.
    Type: Grant
    Filed: September 5, 1974
    Date of Patent: January 20, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edwin Doll Lowthian