Patents by Inventor Harold O. Johnson

Harold O. Johnson 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).

  • Patent number: 4037831
    Abstract: The hold down apparatus includes cooperating adjustable fences confining a workpiece for travel past a rotary cutter. A hold down assembly of the apparatus includes wheel members carried by a vertically adjustable crossmember. The crossmember is biased by multiple springs with the spring rate being variable by threaded components. A screw shaft additionally permits precise vertical adjustment of the hold down means. A rearwardly off set hold down wheel prevents tipping of lengthy workpieces. The fences have recessed areas to allow positioning closely adjacent and inwardly past the hold down devices.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: July 26, 1977
    Inventor: Harold O. Johnson