Patent ID: 9266286
Filing Date: 2016-02-23
CPC Classification: B29C,B29K,B33Y

Claim Text:
1. A 3D printing pen for extruding and curing a radiation-curable pasty polymer composition comprising: a hollow housing having an inner surface and a front end; a cartridge having an outer surface and an inner surface and filled with the radiation-curable pasty polymer composition, the cartridge having a container portion and a tapered nozzle for extruding the curable pasty polymer material; a lead screw rotationally supported inside the container portion of the cartridge, and a piston with a nut that is secured in the piston and engages the lead screw, the piston being slidingly fitted inside the container portion; a rotary drive unit kinematically connected to the lead screw for driving the lead screw into rotation; and radiation energy emitting means located inside the housing around the tapered nozzle and emitting radiation energy onto the material extruded from the nozzle of the cartridge for curing this material.