Patent ID: 7195415

Claim:
A writing instrument comprising: a sleeve-shaped shaft ( 20 ), having a main axis ( 100 ), a terminal control part ( 50 , 35 , 20 b ) at a rear end portion of said shaft, and a substantially conical tip device ( 10 ) at a front end portion of said shaft ( 20 ), wherein said tip device ( 10 ) is tiltable to an inclination angle, wherein said tip device ( 10 ) is controlled in an angular position there, and pivotably inclinable in a plane comprising said main axis ( 100 ) and relative to said sleeve-shaped shaft ( 20 ), wherein the inclination angle is variable in relation to said main axis ( 100 ) of the shaft and the terminal control part controls the angular position of the tip device; wherein a leaf shaped spring ( 17 ) is provided at a backwards facing end portion of said tip device ( 10 ), said leaf spring extending into an inside of said sleeve shaped shaft and contacting an inner surface of a wall of said sleeve shaped shaft for effecting a resetting force on said tip device, upon a controlled increase of said inclination angle of said tip device, said force increasing when said control part increases the angular position of the tip device.