Patents by Inventor Siegenthaler Fritz

Siegenthaler Fritz 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).

  • Testing device for coins of different dimensions and different electro-magnetic properties
    Patent number: 4815579
    Abstract: Two sensors (2, 3) are placed opposite each other against the rim of the coin (5). By this, a signal, corresponding to the diameter of the coin (5) is produced and a drive (18/19, 23/24) is driven which moves two support members in order to support a coin between them (13), the diameter of which corresponds to the distance between the sensors (2, 3) in a position that is centered to a test coil (10) of an inductive coin testing device.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: March 28, 1989
    Assignee: Autelca AG.
    Inventor: Siegenthaler Fritz