Multi-function writing instrument with propulsion mechanism

摘要

A multi-function writing instrument includes a front section having a writing point opening and a rear section having an eraser opening. The rear section and the front section are rotatably connected to each other. A plurality of marking tips are disposed in the front section. One of the marking tips is a pencil lead marking tip. The marking tips are alternately selectable for extension through the writing point opening. An eraser holder is movably disposed in the rear section. An eraser is mounted in the eraser holder. The eraser holder is selectable for extension through the eraser opening. A means for simultaneously propelling the pencil lead marking tip through the writing point opening and the eraser through the eraser opening upon rotation of the front section relative to the rear section is housed in the multi-function writing instrument.