Patents Examined by Hezron E. Williama
  • Solid state illuminator for bi-color ported water level gauges
    Patent number: 7401512
    Abstract: A solid state illuminator and display are provided for bi-colored ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such devices. The illuminator includes an array of bi-colored solid state light emitting diodes (LEDs), as the light source, and a precision lens to focus the light provided from the LEDs through a gauge body and onto a viewing screen.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: July 22, 2008
    Assignee: Fossil Steam Technologies Inc.
    Inventors: David Kalix, John Spencer