Patents by Inventor Ristvedt, Mark E.

Ristvedt, Mark E. 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: 4863414
    Abstract: A coin sorter in which a sorting head is positioned over a rotating pliable disc and wherein coins are sorted by the combination of an outwardly extending tapered edge and a series of pins generally positioned in an outwardly extending line spaced from the tapered edge. The spacing between the line of pins and tapered edge increases with outward dimension, whereby coins of different diameter are urged over the tapered edge by different pins at different positions. The coins are then captured between the head and pliable disc and rotated to exit positions which are unique for each coin about the outside of the sorting head.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: September 5, 1989
    Inventors: Victor G. Ristvedt, Ristvedt, Mark E.