The Jacuzzi Brothers: Hot Stuff! Italian immigrants and former aircraft manufacturers the Jacuzzi brothers (seven of them) started on the path to inventing, making, and selling whirlpool-treatment hot tubs in 1948 because Candido Jacuzzi’s son suffered from rheumatoid arthritis. Now they’re known to the public simply as jacuzzis. Thanks to reader Roger S. (via People Who Became Nouns - Photo Gallery - LIFE)