发明名称 |
DOUBLE-CHUCK MECHANICAL PENCIL |
摘要 |
A double-chuck mechanical pencil has an outer tube, a tip fitting provided in the front of the outer tube, a tip chuck located at the tip of the tip fitting for holding a writing substance (e.g., a lead) and urged rearward in the axial directed, and a delivery chuck for delivering the lead. At least one of the tip chuck and the delivery chuck is formed of a synthetic resin material including polyoxymethylene.
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申请公布号 |
US2001043832(A1) |
申请公布日期 |
2001.11.22 |
申请号 |
US19990444517 |
申请日期 |
1999.11.22 |
申请人 |
KAGEYAMA HIDEHEI;MITSUYA YOSHIHIDE;EBINUMA TADAYOSHI |
发明人 |
KAGEYAMA HIDEHEI;MITSUYA YOSHIHIDE;EBINUMA TADAYOSHI |
分类号 |
B43K21/22;(IPC1-7):B43K21/16 |
主分类号 |
B43K21/22 |
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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