Patent ID: 9340061
Filing Date: 2016-05-17
CPC Classification: B43K

Claim Text:
1. A mechanical pencil comprising a tubular body extending along a longitudinal axis between a rear end which has a first opening and a front end which has a second opening, a lead that can move out through the second opening and a mechanism for advancing the lead arranged within the tubular body, wherein the advancing mechanism comprises: a pushing device adapted to slide parallel to the longitudinal axis, comprising an external portion that extends outward relative to the tubular body and an inner portion inserted into the tubular body through the first opening; a chuck located at the front end side of the tubular body and which could be tightened onto the lead in a tightened position; a reservoir which extends along the longitudinal axis for housing at least one lead, wherein the reservoir comprises a rear end surrounded by the inner portion of the pushing device and a front end suited for moving the chuck when the pushing device slides towards the front end; wherein the tubular body has an annular wall for a pushing device retention at the rear end thereof, the annular wall comprising on an inner surface two longitudinal recesses which include two slits, each longitudinal recess having a rear edge delimited by a tab projecting radially inward relative to the remainder of the inner surface of the annular portion, wherein the inner portion of the pushing device comprises a tubular wall having: an inner surface providing an attachment of the rear end of the reservoir; and an outer surface on which at least one projection projects radially outward, the projection being located in front of the tabs towards the second opening and suited for stopping against the tabs, wherein the inner portion of the pushing device is retained inside the tubular body.