| 摘要 |
<p>A cap for writing instruments such as a mechanical pencil, a ball-point pen, and the like, and particularly to a cap for writing instruments to which a safety measure is applied so that even if a curious infant should erroneously swallow a cap, which as a result is stopped up at his (or her) throat, ventilation of air is secured, the cap comprising a closed-end tubular cap body (1) and a piece body (3) fitted in a mounting opening (2) provided in a suitable opening shape at a closed tail end thereof. The piece body (3) is formed to have a shape adapted and matched to an open shape of the mounting opening (2) of the cap body (1), and a plurality of air ventilating depressed portions (4) communicated with the interior of the cap body (1) along the edge are provided at the side edge long the open edge of the mounting opening (2) whereby even if a curious infant should erroneously swallow a cap, which as a result is stopped up at his (or her) throat, ventilation of air is secured. <IMAGE></p> |
