The main part of the spine device consists of a pine-zipper gear device, i.e. a cylindrical wheel of denture, which describes the rotation around the axis and one or two vertical reticulated wire meshes as circular polygonal cutting strips with a D. Traveling like a pine tree

摘要

Vertebro Bag device, comprising a Gear Mechanism as main part rack and pinion typeThat is a Cylindrical toothed Wheel that describes a Movement of rotation around its axis and one or two Zippers being rectilinear polygonal circular rods, the Court,With a step equal to the Pinion teeth.