Neatorama Posts Tagged "Heatswell"
A Cup Sleeve That Expands When Hot Liquid Is Poured into the Cup...

(YouTube Link) Engineer Scott Amron has a clever invention. It's a heat sleeve for a cup that expands when hot liquid poured into is so that the drinker has additional protection from the heat. Other Amron inventi...

https://www.neatorama.com/2010/03/23/a-cup-sleeve-that-expands-when-hot-liquid-is-pourted-into-the-cup/
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