Patents by Inventor Carol L. Guthrie

Carol L. Guthrie 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).

  • Ball striking device
    Patent number: 5452889
    Abstract: A device for striking a ball, such as a soft foam rubber ball, includes a ball striking element including a clear transparent shell portion which is formed in a configuration similar to a device such as a golf club or a baseball bat and a colored liquid in an inner cavity in the shell portion. The colored liquid only partially fills the inner cavity in the shell portion so that it not only acts to transfer weight in the device during a ball striking exercise but to also provide a unique splashing visual effect.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: September 26, 1995
    Assignee: Tonka Corporation
    Inventors: David P. Lewinski, John F. Mayer, Carol L. Guthrie