WTF Fun Fact – Paul Brown’s Squeeze Bottle Valve

Paul Brown invented the upside-down squeeze bottle valve in 1991 after 111 failed prototypes. He then sold his product to everyone from shampoo companies to Heinz to NASA. Four years later he sold his company for $13 million. – WTF Fun Facts

Source: https://thepatentprofessor.com/this-plucky-inventor-turned-our-world-upside-down/

WTF Fun Fact – Fairey Rotodyne

WTF Fun Fact - Fairey Rotodyne

In the early 1950’s, British company Fairey started to develop a helicopter-type aircraft for commercial passenger use. They eventually built the Rotodyne, which took off vertically using helicopter rotors with jets at their tips but was powered forward by turboprops on the wing. The aircraft never made it into commercial use. – WTF Fun Facts

Source: https://www.bbc.co.uk/news/magazine-35521040