Patents by Inventor Victor G. Ristvedt

Victor G. Ristvedt 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: 4098280
    Abstract: A coin sorting machine in which coins are fed onto the center of a rotating disc having a flexible surface. An annular guide plate is positioned over the disc, being open in the center for receiving coins, and extending outward to the peripheral edge of the disc. The underside of the guide plate is formed with a peripheral stop extending around approximately half of the disc, and a series of discrete radial guides extend over portions of the other half of the disc. The first of the series of guides would have an outer edge differing in radius from the peripheral stop by the diameter of the smallest coin to be sorted, and each succeeding guide would have a progressively smaller radial outside edge defined by the difference between coins to be sorted by succeeding guides.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: July 4, 1978
    Inventors: Victor G. Ristvedt, Roy B. Johnson
  • Patent number: 4086928
    Abstract: A coin sorting machine in which coins are moved by centrifugal force in a single layer and in a single file onto a flexible mat and laterally against an outer raised edge of a rotating disc. The coins are then rotated under a series of coin depressors, each being spaced to engage the inner edge of a particular diameter, denomination, of coin at a discrete peripheral position. As the inner edge of a particular coin is thus depressed into the flexible mat, the outer edge of that coin is raised above the outer restraining edge, and the coin is thus hurled outward above the edge at a discrete peripheral position to thus effect denominational sorting.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: May 2, 1978
    Inventors: Victor G. Ristvedt, Roy B. Johnson