Patents by Inventor Jackson E. Schunk

Jackson E. Schunk 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: 4794766
    Abstract: A finger ring with interchangeable stone has a finger encircling ring body with an enlarged portion having a stone setting attached thereto. A pair of V-shaped stone clamps have apexes pivotally attached to the ring body and end hooks for engaging facets of a selected stone. A threaded boss is attached to said ring body on each side of said stone setting and each accepts a clamping screw having an enlarged decorative head. The clamping screw passes through a stone clamp and threadedly engages a boss to cause the clamp hooks to secure the selected stone in the setting. By loosening the clamping screws, the stone can be quickly changed.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: January 3, 1989
    Inventors: Shane P. Schunk, Jackson E. Schunk