Patents by Inventor Roben Ryberg

Roben Ryberg 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: 5797580
    Abstract: A stand for supporting a cut tree trunk in a vertical position includes a tree trunk encircling clamp, having a first curvate locking jaw and a second curvate locking jaw each having a free end and a base end. The base ends are pivotally connected to each other at a base. The locking jaws include a serrated inner surface convexly curved in a radially inward direction facing each other for closure with a tree trunk. A locking clamp includes a rigid handle fixedly secured to the base end of the first locking jaw and a pivoting handle pivotally secured to the second pivoted jaw adjacent the base end of the rigid handle. The pivoting handle extends radially outwardly to respective distal free ends of the first and second curvate locking jaws. An adjustable locking shaft is threadedly mounted within the rigid handle and extends radially inwardly thereof. A pair of elongated locking toggles are pivoted at a respective inner pivot end in the first curvate locking jaw and in the pivoting handle.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: August 25, 1998
    Inventor: Roben Ryberg