Patents by Inventor Frederic L. Pluff

Frederic L. Pluff 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).

  • Cylindrical member with reduced air flow resistance
    Patent number: 5909782
    Abstract: An elongate member for positioning transverse to a fluid flow includes a curved outer surface. A first elongate flow transition inducing structure is positioned on and extends along a substantial length of the outer surface of the elongate member transverse to the fluid flow between about 50.degree. and 80.degree. away from the fluid flow for reducing fluid flow resistance on the elongate member.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: June 8, 1999
    Inventors: Frederic L. Pluff, Paula N. Pluff