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The Discovery Of Leonardo Da Vinci

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History Leonardo da Vinci made a concept of a step less continuously variable transmission in 1940 but the first patent for a friction-based belt CVT was filed in Europe by Daimler and Benz in 1886 and a US Patent for a CVT was granted in 1935.Also In 1910 Zenith Motorcycles built a V2-Motorcycle with the Gradua-Gear which was a Continuously VariableTransmission. This Zenith-Gradua was so successful in hillclimb events that it was eventually produced widely so that other manufacturers could give there racers a chance to win. A Continuously Variable Transmissions, called Variomatic was designed and built by Hub van Doorne the co-founder of Van Doorne 's Automobiel Fabriek in the late 1950s specifically to produce an automatic transmission for a small affordable car. The first DAF car using van Doorne 's CVT was the DAF 600, which was produced in 1958. Van Doorne 's patents were later transferred to a company called VDT Van Doorne Transmissie B.V. when the passenger car division was sold to Volvo in 1975 its CVT was used in the Volvo 340. Many snowmobiles use a rubber belt CVT and also in 1974, Rokon offered a motorcycle with a rubber belt CVT. CVTs are used in some ATVs, The first ATV equipped with CVT was Suzuki 's LT80 in 1987. In the late 1990s Nissan designed its own CVT that allowed for higher torque and included a torque converter. This gearbox was used in a number of Japanese market models; Nissan is also the only car maker to bring a roller-based CVT to the market in

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