Side knock type mechanical pencil

A side-knock mechanical pencil comprising:

• a generally cylindrical, hollow shell extending from approximately the front end of the pencil to the rear end of the pencil;
• chuck means disposed within said cylindrical shell near the front end thereof to advance a pencil lead out of the front end of the pencil upon side-knock operation;
• a generally elongated slide member disposed within said shell and connected at a front end thereof to said chuck means, said slide member being axially movable within said shell relative to said shell and formed as a one-piece molded member, said slide member comprising a slanted portion having a surface that is angled relative to a longitudinal axis of said slide member, a lead passageway extending through said slanted portion, and a large-diameter portion at a rear end of said slide member, said large-diameter portion having an outer diameter substantially equal to the inner diameter of said shell;
• means for preventing rotational movement of said slide member relative to said shell;
• a first biasing member disposed within said cylindrical shell to bias an assembly comprising said chuck means and said slide member backward;
• and
• a knock lever disposed within a side of said shell in position to abut said angled surface of said slide member so that when said knock lever is pressed, side-knock operation is effected against the biasing action of said first biasing member.