Patent ID: 8231296
Filing Date: 2012-07-31
Classification: B29C,B43K

Abstract:
1. A method of manufacturing a writing implement mechanism which comprises a tubular element, the tubular element having a central axis and comprising a first wall and a second wall which are fixed relative to each other, the second wall being offset towards the central axis relative to the first wall in a direction that is radial relative to the central axis, the first wall presenting a first edge and the second wall presenting a second edge, the first and second edges defining a guide extending longitudinally between a first end and a second end in a direction that is inclined relative to the central axis, the method comprising the steps of: supplying at least two half-shells adapted to form the first edge and outside portions of the walls; providing a core adapted to form the second edge and inside portions of the walls of the first element; injecting material between the half-shells and the core; and moving the shells away radially in a direction that is radial relative to the central axis, and withdrawing the core in a direction that is parallel to the central axis.