Patents by Inventor John O. Hurst

John O. Hurst 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).

  • Publication number: 20040128839
    Abstract: A filament trimmer comprises a lower housing, an upper handle, and a connecting tube extending between and uniting the lower housing and upper handle. An assist handle is located on the connecting tube to allow an operator to grip and hold the filament trimmer with two hands, namely with one hand on the upper handle and the other hand on the assist handle. The assist handle includes a hub that snaps onto the connecting tube to allow the assist handle to be installed on the connecting tube without using fasteners. The hub has flexible sides that allow the hub to be snapped over the connecting tube with the hub and the connecting tube having mating non-circular cross-sections. The holding force provided by the hub keeps the hub stationary on the connecting tube during normal operation of the trimmer. However, the operator can reposition the assist handle along the connecting tube by applying a greater force than the holding force to slide the assist handle up or down the connecting tube.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 8, 2004
    Inventors: Chadwick A. Shaffer, John O. Hurst
  • Publication number: 20030188435
    Abstract: A filament trimmer includes a rotatable trimmer head having an outwardly extending filament. The trimmer has an upper handle that the operator can grip to operate the trimmer in either a trim mode or an edge mode. In the trim mode, the filament extending outwardly from the trimmer head is positioned in a generally horizontal cutting plane, while in the edge mode the trimmer is reoriented such that the filament is positioned in a generally vertical cutting plane. The upper handle of the trimmer includes dual triggers for selectively starting and stopping rotation of the trimmer head. One trigger is actuated when the trimmer is operated in the trim mode and the other trigger is actuated when the trimmer is operated in the edge mode.
    Type: Application
    Filed: April 4, 2002
    Publication date: October 9, 2003
    Inventors: Bart T. Ellson, John O. Hurst, Chadwick A. Shaffer