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The most elegant mechanisms are usually the simplest. Consisting of only two components, the gerotor was first manufactured in the 1920s, and is still in use today in automotive engines, fuel and oil pumps, and hydraulic systems. The term “gerotor” is a contraction of “generated rotor” coined by inventor Myron F. Hill, who was the first to develop the principle geometry for the pump in the early 1900s. - The W.H. Nichols Company in Waltham mastered the challenge of mass-producing gerotors in the 1920s. Nichols was purchased by Parker-Hannifin in the 1980s. They still produce gerotors today at Nichols Portland.
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