High ratio frictionless speed reductor

Claim 1

A mechanical speed reductor of the four-gear planetary type, comprising an input rotating shaft carrying an eccentric cylindrical bossing, two satellite gears coupled rigidly side by side, rotating freely together around the eccentric bossing and provided with external straight-sided teeth of dihedral shape, one solar annular gear concentric with the input shaft and kept stationary with respect to the reductor housing, and provided with internal straight-sided teeth of dihedral shape meshing loosely with one of the said coupled satellite gears, one solar annular gear concentric with the input shaft and mounted on an output shaft which is in alignment with the input shaft, and provided with internal straight-sided teeth of dihedral shape meshing loosely with the other gear of the said satellite coupled gears, with a plurality of free-spinning rolls separating all the straight-sided faces of meshing teeth of all four gears, said rolls being subjected in succession to pressure between said faces, said rolls remaining spaced from each other at all times and being free to move individually along the said contacting faces in the region of deepest penetration of meshing teeth when under intermittent pressure resulting from torque transmission from the input shaft to the output shaft through the gears and the rolls.