Mechanical pencil with a side button and an eraser dispenser and a method of assembly

  • US 10,668,766 B2
  • Filed: 02/08/2017
  • Issued: 06/02/2020
  • Est. Priority Date: 02/11/2016
  • Status: Active Grant
First Claim
Patent Images

1. 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.

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