Patent ID: 6878040

Claim:
A polishing and planarization machine comprising: a) an internal gear having an axis; b) a rotating shaft rotating through the axis of said internal gear, c) a spur gear intermeshed with said internal gear and disposed to move about the internal circumference of said internal gear; d) a crankshaft having a shaft part and a crank arm, said shaft part being inserted into said spur gear at a first end; e) a linkage bar connecting said rotating shaft with said shaft part of said crankshaft at a second end, such that the rotation of said rotating shaft forces said spur gear to revolve about the axis of said rotating shaft and to rotate about its own axis cranking said crank arm; f) a push pin, said push pin, displaced from the axis of said spur gear, and driven by said crank arm along a locus, whereby said locus approximates a hypotrochoid; and g) a polishing table assembly comprising a polishing table and a support mechanism, the polishing table mounted on the support mechanism such that the polishing table moves freely on a first plane and is driven by said push pin.