| 摘要 |
A magnetically self balancing pen and base includes a base member housing a disk magnet and a concentric ring magnet having a predetermined inside diameter. The pen assembly has a barrel, an elongated ink cartridge with a magnetically attractable tip, and an annular magnet disposed inside the barrel and around the elongated ink cartridge. The annular magnet is located proximal but separated from the magnetically attractable tip with the end proximal the tip having a polarity equal to that of an upper surface of the ring magnet in the base.
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