发明名称 |
Lead cartridge with an openable capping structure |
摘要 |
A lead cartridge for a mechanical pencil, provided with an openable capping structure. The openable capping structure is fixedly joined to the open end, namely, the front end, of the lead cartridge so as to engage the lead guide of the mechanical pencil when the lead cartridge is inserted in the mechanical pencil. The openable capping structure opens a lead passage formed therein when engaged with the lead guide and closes the lead passage when separated from the lead guide to prevent the leads contained in the lead cartridge falling off the lead cartridge.
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申请公布号 |
US4998837(A) |
申请公布日期 |
1991.03.12 |
申请号 |
US19890353151 |
申请日期 |
1989.05.12 |
申请人 |
KOTOBUKI & CO., LTD. |
发明人 |
KAGEYAMA, HIDEHEI;MITSUYA, YOSHIHIDE |
分类号 |
C03C17/25;B43K21/00;B43K21/04;B43K31/00;C23C18/06;G02F1/01;G02F1/1343 |
主分类号 |
C03C17/25 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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