Ralph Tony Sarich (born in 1938) is an Australian Croat who developed the Orbital Engine in 1972. He is a recipent of several prestigeous ingeneering awards like Australian Inventor of the Year 1972, Sir Lawrence Hartnett Inventors Award 1972, Churchill Medal, British Society of Engineers 1987 and Clunies Ross National Science and Technology Award 1991. His parents are Croatian immigrants to Australia.

See Orbital Engine Patent.

Miss Australia Michelle Downes visited Ralph Sarich’s workshop
where she was shown his revolutionary orbital engine in 1972.
Source business.thewest.com.au