John Willard Hetrick (1918–1999) was an American industrial engineer from Newport, Pennsylvania, widely credited with inventing the automotive airbag. He filed for a U.S. patent on August 5, 1952, for a “Safety cushion assembly for automotive vehicles” and received U.S. Patent No. 2,649,311 on August 18, 1953, the first U.S. patent for an airbag. His design used compressed air to inflate cushions (in locations such as the steering wheel, dashboard/glove box, and potentially seat backs) in response to sudden deceleration, triggered by a spring-loaded sensor. He built an early prototype on his kitchen table.
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