Patent ID: 8915663

Claim:
A writing instrument comprising: a shaft having an inner wall and extending longitudinally between a front end with a writing tip and a rear end that includes an eraser exit device that further comprises: an eraser capable of adopting a maximum exit configuration and a retraction configuration in which it is at least partially protected; an eraser protection sleeve, mobile at least in rotation with respect to the shaft between a first position for which the eraser is in the retraction configuration and a second position for which the eraser is in the maximum exit configuration; and an eraser holder to which the eraser is fixed, with at least one first longitudinal guiding member interacting directly with a first complementary longitudinal guiding member integral with the shaft in order to prevent any rotational motion between the holder and the shaft, the holder having a securing portion capable of keeping a grip on a portion of the eraser and further having a front projection extending longitudinally which is at least partly surrounded by the shaft, the front projection being substantially unmovable relative to the securing portion, wherein the eraser holder further comprises at least one second guiding member interacting with a second complementary guiding member integral with the sleeve so that the rotation of the sleeve drives a relative translational motion between the holder and the sleeve, wherein the sleeve has a front portion surrounding the rear end of the shaft and a rear portion not surrounding the shaft that has an inner guiding surface comprising the second complementary guiding member, the eraser holder being capable of sliding directly against the inner wall of the shaft and having an outer guiding surface comprising the second guiding member.