Dynasphere (vehicle)

The Dynasphere (sometimes misspelled Dynosphere) is a monowheel vehicle design patented in 1930 by John Archibald Purves FRSE (7 August 1870 – 4 November 1952) from Taunton, Somerset, UK.

Purves' idea for the vehicle was inspired by a sketch made by Leonardo da Vinci.

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