Patent ID: 9302529
Filing Date: 2016-04-05
CPC Classification: B43K

Claim Text:
1. A mechanical pencil arranged to grasp and release a writing lead by reciprocation of a chuck provided in a body cylinder so as to inch said writing lead forward, having a rotational drive mechanism for rotationally driving a rotor in one direction in conjunction with retreat operation of the writing lead into the body cylinder by the writing pressure applied to said writing lead and forward movement of the writing lead from the body cylinder by releasing the writing pressure, and arranged to transmit rotational motion of said rotor to said writing lead, wherein a component arranged to extend from said body cylinder forwardly or rearwardly of said body cylinder is arranged to be rotationally driven in conjunction with the rotational motion of said rotor, and said component is provided with a display means for displaying a rotation state of said component.