Patent ID: 7179003

Claim:
A lipstick mechanism comprising an internal substantially tubular duct that turns in an external substantially tubular duct, the ducts having two longitudinal slots and two substantially helical slots for guiding in translation studs of a lipstick-holder cup disposed in the internal tubular duct, the internal duct comprising a substantially cylindrical base with a restriction relief that bears elastically on a substantially cylindrical surface connected to the external duct, wherein the surface connected to the external duct is elastically deformable and the restriction relief is formed by a raised area sunk in the surface and comprises off-centering a cylindrical part of the internal duct at the restriction surface, and wherein a wall constituting the surface is covered with a rigid substantially cylindrical envelope and is associated externally with a space permitting its deformation that results at least partially from a thinning of the rigid envelope.