Patents by Inventor Barry J. Weidenhammer

Barry J. Weidenhammer 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).

  • High reliability, low intensity back lit SR and NVGC indicator assembly
    Patent number: 5150257
    Abstract: An electronic light valve is disposed over a color fill lens formed in an opaque indicia plate and an infrared filter to be energized to a transmissive condition simultaneously with a low intensity light source to illuminate the legend either by ambient light reflecting from the lens or by the light source emitting prescribed energy wavelengths through the lens, whichever thereof having the greater intensity relative to the other. In a deenergized condition of the light source and light valve, the latter blocks ambient light from the legend to prevent viewing thereof.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: September 22, 1992
    Assignee: Eaton Corporation
    Inventors: Akbar Mohabbatizadeh, Barry J. Weidenhammer