Patents by Inventor Donald J. Manderfeld

Donald J. Manderfeld 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: 5009411
    Abstract: An input hopper (20) for inputting card members to card processing modules (14) includes a tray (22) for storing the cards which are maintained in a stack by a pusher mechanism (30) having a plate (23) biasing the card stack toward a first end of the tray (22). A notched cam (42) at the first end of the tray (22) rotates and engages the edge of a lead card to separate it from the stack. Rollers (50,52,54) engage the separated card and deliver the card from the input hopper (20). The cam (42) and main roller (50) are driven by a motor (60) and drive linkage (61) including a coiled spring (70) to provide an override to the drive linkage (61) in the event of jamming.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: April 23, 1991
    Assignee: DataCard Corporation
    Inventors: Donald J. Manderfeld, Robert A. Sells