American sculptor, architect, and artist who made graceful steel wind kinetic sculptures, such as the piece Sunrise Serenade.
He studied at the Cleveland Institute of Art on a scholarship, and then he served in the United States Air Force during World War II.
He designed his kinetic sculptures to exhibit graceful movement, and were modeled after birds and wind vanes.
He married German immigrant Hedwig Roelen in 1942.
He and Naum Gabo were both known for their kinetic artwork.