Patent ID: 8807860

Claim:
A writing implement comprising: a writing body extending from an end having a writing tip integral with the writing body, and a removable cap covering the writing tip in a coupled position of the cap with the writing body, the cap having a bottom, a tubular wall extending along a central axis (Z) between a first end joining with the bottom and a second end defining an axial opening, the tubular wall having an inner surface provided with a plurality of protrusions, wherein the inner surface includes a low surface level, an intermediate surface level, and an upper surface level defined by the protrusions that protrude from the intermediate surface level and are capable of holding the cap by engagement with the writing body in the coupled position, wherein the inner surface of the cap has at least one groove arranged between two of the protrusions and extending to the second end of the tubular wall, the at least one groove defining the low surface level.