Patents by Inventor Robert A. Tunberg

Robert A. Tunberg 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).

  • Protective sleeve for a paper cup
    Patent number: 4548349
    Abstract: The invention consists of a protective sleeve that fits around and protects a paper cup used in the preparation of various confectionary drinks such as malted milk and ice cream shakes. The sleeve is a hollow, tapered cylinder having a substantially smooth inner surface that contacts the paper cup over a portion of the cup's surface area and provides structural support for the cup area contacted and rigidity to the cup area not contacted. This cylinder has an outer surface with a roughened portion which enables an operator to securely grip it.
    Type: Grant
    Filed: April 3, 1984
    Date of Patent: October 22, 1985
    Assignee: Whitey's Ice Cream Manufacturers, Inc.
    Inventor: Robert A. Tunberg