Mechanical pencil with a side button and an eraser dispenser and a method of assembly
AssigneeSociete BIC
InventorsFranck Rolion, Ludovic Fagu
Life of this patent
Estimating the term…
Abstract
A mechanical pencil includes a barrel extending in a longitudinal direction, a lead-propelling mechanism, a lead reservoir, a side button, and an eraser-propelling mechanism having a helical cam. The lead-propelling mechanism, the lead reservoir, the eraser-propelling mechanism, and the side button are at least partly housed inside the barrel. The lead-propelling mechanism, the lead reservoir, and the eraser-propelling mechanism are prevented from rotating about the longitudinal direction relative to one another and relative to the side button, and the side button is prevented from rotating about the longitudinal direction relative to the barrel.
Claims13
A mechanical pencil comprising:
- a barrel extending in a longitudinal direction, a lead-propelling mechanism, a lead reservoir, a side button, and an eraser-propelling mechanism having a helical cam, the lead-propelling mechanism, the lead reservoir, the eraser-propelling mechanism, and the side button being at least partly housed inside the barrel, the lead-propelling mechanism, the lead reservoir, and the eraser-propelling mechanism being prevented from rotating about the longitudinal direction relative to one another and relative to the side button, and the side button is prevented from rotating about the longitudinal direction relative to the barrel, wherein rotation about the longitudinal direction is prevented by a system including a plurality of ribs, each rib including a beveled longitudinal end.
A method of assembling a mechanical pencil comprising the steps of:
- providing a barrel extending in a longitudinal direction, a lead-propelling mechanism, a lead reservoir, an eraser-propelling mechanism having a helical cam, and a side button;
- preventing the side button from rotating about the longitudinal direction relative to the barrel;
- inserting the lead-propelling mechanism into the barrel and preventing the lead-propelling mechanism from rotating about the longitudinal direction relative to the side button by utilizing a system for preventing rotating including a plurality of ribs including beveled longitudinal ends;
- assembling the eraser-propelling mechanism and the lead reservoir together and preventing the eraser-propelling mechanism from rotating about the longitudinal direction relative to the lead reservoir;
- and
- inserting the lead reservoir and the eraser-propelling mechanism into the barrel and preventing the lead reservoir from rotating about the longitudinal direction relative to the lead-propelling mechanism.
Dependencies are inferred from the claim text.