Patents by Inventor Oliver L. Hunt

Oliver L. Hunt 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).

  • Spinneret having groups of orifices with various interorifice spacing
    Patent number: 4679998
    Abstract: The conventional spandex spinneret has two rings of equally spaced grouped orifices, each filament being formed by coalescence of the extrudate from the grouped orifices. A spandex spinneret having the holes of the orifices of each group of the outer ring of groups more closely spaced than those of the inner ring of groups has eliminated the power differences between inner and outer threadlines. The closer spacing within each group of the outer ring of groups also increases the spacing between groups, thereby reducing filament migration.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: July 14, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard L. Dreibelbis, Oliver L. Hunt