Cap for a pencil

A pencil cap comprising:

• an opening for receiving an end of a pencil, a pair of ribs positioned angularly and uniformly about a central axis of the pencil cap, the pair of ribs being positioned adjacent to the opening and configured to cooperate with a non-sharp portion of the pencil, a surface configured to cooperate with a sharp end of the pencil, and a stop configured to cooperate with the non-sharp end of the pencil, wherein the stop and the surface are borne by an arresting rib, wherein each rib of the pair of ribs comprises a clamp configured to cooperate with the non-sharp portion of the pencil, the clamp having an inscribed diameter positioned in a plane perpendicular to an axial direction, the inscribed diameter is equal to or greater than about 95% of a minimum inscribed diameter of the pencil and less than or equal to about 99% of the minimum inscribed diameter of the pencil.

A cap for a pencil comprising an opening sized to receive an end of the pencil, three internal ribs, uniformly distributed about a central axis of the cap, the three internal ribs located proximate to the opening and cooperating with a non-sharpened portion of the pencil, an arresting surface cooperating with a sharpened end of the pencil, and a stop cooperating with a non-sharpened end of the pencil, wherein the stop and the arresting surface are borne by a third rib, wherein the cap has a hexagonal shape in a perpendicular plane relative to the central axis.