Day 17 Clarence L. Elder – 28 days of Black History in Technology

Clarence L. ElderClarence L. Elder was born in 1935 he graduated from Morgan State College. In 1967 he was awarded a patent for a monitoring and energy conservation control system.

That system reduced energy use in vacant homes and buildings.  This was very useful for hotels and school rooms.  The system used an electronic beam aimed across the building entrance, this beam could gauge the coming and going of traffic.

The system could reduce heat and light demand and boast energy saving up to 30 per cent.

Patent # 4,000,400 filed April 9, 1975, issued December 28, 1976.

Bidirectional Monitoring PDF


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One Response to “Day 17 Clarence L. Elder – 28 days of Black History in Technology”

  1. Great invention as the world today has become more energy efficient and eco-friendly. Nice post feature!

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