Patents by Inventor Olle Tornas

Olle Tornas 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).

  • Device for increasing and standardizing the scatter of shotguns, particularly for skeet shooting
    Patent number: 4071971
    Abstract: A device for controlling the scatter of shot wherein the barrel of the shotgun adjacent the muzzle is provided with grooves disposed at a small angle to the longitudinal axis of the barrel. The grooved portion of the muzzle is constricted to provide a converging then diverging wall portion. The roots of the grooves define a cylinder having a diameter comparable to the diameter of the barrel. The width of the grooves is greater than the size of the shot and discharge of the shot through the barrel past the grooves produces a twisting movement which provides an uniform distribution of the shot.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: February 7, 1978
    Inventor: Olle Tornas