Patents by Inventor David M. Hampton

David M. Hampton 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).

  • Model train controller using electromagnetic field between track and ground
    Patent number: 5441223
    Abstract: A controller for model trains on a train track is provided. The controller transmits control signals between a rail of the track and earth ground, generating an electromagnetic field which extends for several inches around the track. A receiver in the locomotive can then pick up signals from this electromagnetic field.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: August 15, 1995
    Assignee: Neil P. Young
    Inventors: Neil P. Young, David M. Hampton