A MAGNETIC HARMONIC GEARBOX

摘要

A magnetic harmonic gearbox (100) comprises a first ferromagnetic member (102) having a plurality of spaced teeth (104), a second ferromagnetic member (106) arranged within the first member (102) and the second member (106) having a plurality of spaced poles (108). Third means (110, 112) are arranged within the second member (106) and the second member (106) is movable relative to the first member (102). The third means (110, 112) is arranged to produce a moving magnetic field and the number of teeth (104) on the first member (102) is different to the number of poles (108) on the second member (106).