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First Laboratory Model of Clutch : Jacob Rabinow

Photograph of First Laboratory Model of Clutch

First Laboratory Model of Clutch
ca. 1942

Because Rabinow invented the Magnetic Particle Clutch as part of his work in guided missiles at the National Bureau of Standards, the United States Government owned U.S. patent. However, in partnership with his brother, Joseph, he did file for patents in 22 foreign countries. Because of the simple design, precise torque control, smooth operation, and long life, the device found wide application. It was used in automobiles in Europe and Japan (e.g. Subaru and Renault) and in airplane controls. One of the early applications was in the IBM RAMAC's disc file.