Patents by Inventor Ernest H. Spearman

Ernest H. Spearman 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).

  • Anti-wrap blades for line trimmer
    Patent number: 5239811
    Abstract: Secondary cutting blades are mounted on a line trimmer between the hub carrying the cutting line and the shield. The cutting blades extend parallel to the axis of rotation of the hub carrying the cutting line. The blades have one end adjacent to the periphery of the hub, and the other end supported at or above the shield. Tall grass or other long stalks will therefore be cut by the blades and unable to wrap around the trimmer.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: August 31, 1993
    Assignee: Melvin Pierce
    Inventor: Ernest H. Spearman