Writing tool
AssigneeSDI Corporation
InventorSzu-Yu Chen
Life of this patent
Estimating the term…
Abstract
A writing tool has a pen tube, a capillary unit, and a dispensing unit. The capillary unit is mounted in the pen tube, and is connected to a nib. The dispensing unit is mounted in the pen tube, and has a communicating tube and a pressing segment connected to the communicating tube. The pressing segment has at least one connecting arm connected to the communicating tube. A dispensing interval is formed between the communicating tube and a periphery of the pressing segment. The communicating tube contacts the capillary unit to make the capillary unit form different compression densities via the pressing segment and the dispensing interval, thus facilitating dispensing ink downward easily through the dispensing interval and providing a better occlusion effect to further avoid ink leakage.
Claims20
A writing tool comprising:
- a pen tube having
- a nib mounted to an end of the pen tube;
- an ink cartridge mounted to another end of the pen tube and opposite to the nib;
- a capillary unit mounted in the pen tube and between the ink cartridge and the nib;
- an end of the capillary unit being connected to the nib;
- and
- a dispensing unit mounted in the pen tube, disposed between the capillary unit and the ink cartridge, and having
- a communicating tube having
- an internal periphery;
- a channel surrounded by the internal periphery;
- and
- a dispensing end facing the nib;
- a pressing segment mounted to the dispensing end, contacting the capillary unit, and having
- at least one abutting segment having
- a supporting surface contacting the capillary unit;
- and
- at least one connecting arm connecting the at least one abutting segment and the internal periphery;
- and
- a dispensing interval formed between the at least one abutting segment and the internal periphery.
Dependencies are inferred from the claim text.