Patents by Inventor Roseann Narvett

Roseann Narvett 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: 5451017
    Abstract: A new and improved automatic track switching control apparatus is provided for a switch assembly in a track layout for a lamp-containing model train. The automatic track switching control apparatus includes a first light sensor assembly which is supported by a base and which is located in the vicinity of a switch assembly in the track layout. The first light sensor assembly senses light emitted from a lamp on the lamp-containing model train as it approaches the switch assembly. A signal processing assembly is connected to the first light sensor assembly for receiving the electrical signal representing the approach of the lamp-containing model train to the first light sensor assembly. A switch-flipping assembly is connected to the signal processing assembly for receiving a second electrical signal for controlling switch status of the switch assembly. The signal processing assembly includes a counter assembly for counting first electrical signals provided by the first light sensor assembly.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: September 19, 1995
    Inventors: John H. Graff, Roseann Narvett