| 摘要 |
A tubular cap for the top of a ball point pen, the cap having a long slot with an offset defining a lower long slot and an upper long slot with narrow slots perpendicular to the upper long slot and extending on either side of the long slot, the top of the cap supporting an internal coil spring extending down the cap toward the open end of the long slot, the coil spring engaged with the plunger of the ball point pen short of full extension of the ink cartridge housed therein and providing a smooth touch while writing that can be adjusted for firm, medium and soft touch writing.
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