Micro-percussion engraver pen for e.g. marking object, has engraver stylus maintained in stylus holder by friction blocking metallic unit that comprises spiral maintenance unit with inner diameter lower than outer diameter of stylus

摘要

The pen has an engraver stylus (4) maintained in a stylus holder (1) by a friction blocking metallic unit. The metallic unit has a spiral maintenance unit (5) with inner diameter slightly lower than outer diameter of the stylus. The holder is fixed to a shaft (2) at its proximal end, and comprises a housing (3) for the stylus, where the housing is opened at a distal end of the holder.