Auto-retractable pen mechanism with a cushion effect

Details Auto-retractable pen mechanism with a cushion effect Auto-retractable pen mechanism with a cushion effect

B - Operations, Transporting

43

K

B43K 5/16 (2006.01) B43K 23/02 (2006.01) B43K 24/00 (2006.01)

Patent

CA 2429153

~ A retractable pen comprises a pen and a cap. The pen comprises a hollow case, an ink cartridge, a mechanical spring and a mobile magnetic element. The cap comprises a cap body and a stationary permanent magnet. The pen is capable of attaching to the cap by the magnetic attraction force in a single-hand operation when a user places the mobile magnetic element of the pen in proximity to the stationary permanent magnet of the cap. The writing tip of the ink cartridge of the pen retracts into the hollow case of the pen when an upward magnetic attraction force is greater than a downward mechanical expansion force. This invention relates to pens, and the principal use of the invention is for operating a pen with a single hand.

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