Patents by Inventor George Robertson Parkes

George Robertson Parkes 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).

  • Fan assembly with blades secured between two hub members
    Patent number: 4003677
    Abstract: A fan comprises a flat disc sandwiched between two hub members, together with two or more blades, ech blade having a boss with a slit so that the boss straddles the peripheral portion of the disc and is gripped by the hub members. Fans can readily be assembled with any required number of blades and the blades can be set at any required angle by cutting the slits at the appropriate angle.
    Type: Grant
    Filed: May 2, 1974
    Date of Patent: January 18, 1977
    Assignee: Wilmot Breeden (Truflo) Limited
    Inventor: George Robertson Parkes