Patents by Inventor Grace C. Barben

Grace C. Barben 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: 5646594
    Abstract: Fresnel lenses are incorporated into bear's paws of a child's toy teddy bear. The Fresnel lenses cover infrared detectors, and gather infrared energy and focus it onto the infrared sensors. The signal generated by the infrared sensors is passed to a detector timer assembly and then to a power control device. The detector assembly consists of a low-pass filter, a level comparator, a variable time-on timer, and a daylight override circuit. The power control device provides power to an outlet.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: July 8, 1997
    Inventors: Carl L. Barben, Jr., Grace C. Barben