Patents by Inventor Ernest Sidney Fairweather

Ernest Sidney Fairweather 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).

  • Groove cutting apparatus
    Patent number: 4040668
    Abstract: Groove cutting apparatus having a rotatable cutting drum comprising a plurality of spaced drum segments coaxially mounted on a central shaft. A plurality of secondary shafts are spaced circumferentially around the central shaft and supported by the drum segments. Apertured cutting members are mounted on the secondary shafts and spaced by the drum segments.
    Type: Grant
    Filed: December 23, 1975
    Date of Patent: August 9, 1977
    Assignee: Errut Products Limited
    Inventors: Ernest Sidney Fairweather, Philip Jackson