Inventor's name: Leonardo DaVinci
Date of birth: 1452
Date of death: 1519
Invention: helicopter (along with other flying machines) parachute, ball barings, submarine, armored cars, rapid fire guns, ballista, centrifugal pump, worm gear. DaVinci was an Italian artist, scientist, and inventor who made detailed sketches of these inventions.
Source: "http://www.enchantedlearning.com/inventors/undersea.shtml". December 18 2001