发明名称 |
Writing tool |
摘要 |
This invention is to a writing tool such as mechanical pencil or a ballpoint pen in which a writing shaft having a head member is inserted in an outer sleeve in such a manner that the head member projects from the outer sleeve. A stair or step and a spiral groove are provided on the forward inner surface and the rearward inner surface of a tubular cap, respectively, with an inside diameter of the rear part of the spiral groove being larger. A bearing part is brought into contact with a lead tank provided inside a forward art of the tubular part so that the forward part of the outer sleeve is movable in the axial direction and is locked in the turning direction against a rearward inner surface of the outer sleeve. The rearward part of the tubular body is provided with a slit, holding pieces of a stick-shaped object holder slidably inserted in said slit. A stick-shaped object is held by the holding pieces, and the projection is provided on each holder engaged with the spiral groove of the tubular cap.
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申请公布号 |
US5683191(A) |
申请公布日期 |
1997.11.04 |
申请号 |
US19940264424 |
申请日期 |
1994.06.23 |
申请人 |
KOTOBUKI & CO., LTD. |
发明人 |
KAGEYAMA, SHUHEI;KAGEYAMA, TOSHIHIKO;NAKAZATO, YOUICHI;MITSUYA, YOSHIHIDE |
分类号 |
A45D40/06;A45D40/18;A45D40/20;B43K21/02;B43K21/08;B43K29/02;(IPC1-7):B43K25/00 |
主分类号 |
A45D40/06 |
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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