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- A '''universal joint''', '''U joint''', '''[[Gerolamo Cardano|Cardan]] joint''', or '''Hardy-[[Clarence W. Spicer|Spicer]]''', '''Hooke's''' joi ...m knot". In Europe, the device is often called the '''Cardan joint''' or ''Cardan shaft''. [[Robert Hooke]] produced a working universal joint in [[1676]], g7 KB (1,073 words) - 09:25, 7 October 2009