11th Day of November

1930 – Patent is awarded for the Einstein refrigerator

The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate.

It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd, who patented it in the U.S. on November 11th, 1930.

1930 – Patent is awarded for the Einstein refrigerator
The Crown Jewels

From 1926 until 1934 Einstein and Szilárd collaborated on ways to improve home refrigeration technology. The two were motivated by contemporary newspaper reports of a Berlin family who had been killed when a seal in their refrigerator failed and leaked toxic fumes into their home.

The Einstein refrigerator is a development of the original three-fluid patent by the Swedish inventors, the three working fluids in this design are water, ammonia and butane.

Extra Note: The refrigerator was not immediately put into commercial production; the most promising of their patents being quickly bought up by the Swedish company Electrolux.

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