| 摘要 |
A writing implement, such as a marking instrument, includes separably coupled coaxial upper reservoir and lower barrel sections. A writing nib extends along and projects beyond the ends of the lower barrel section and has an ink feed bore along its length and terminates in a tapered writing tip. A piercing tube extends upwardly from the barrel bottom section and engages the top part of the nib and a venting passage of lesser maximum dimensions than the ink feed bore extends along the inner feed of the piercing tube and communicates with the exterior of the barrel bottom section. A replaceable liquid ink cartridge is housed in the reservoir section and is engaged by the piercing tube.
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