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发明名称
绘图用加深铅笔
摘要
本实用新型公开了一种用于绘制工程图形时加深底图图形使用的铅笔。它是按机械制图标准中粗线推荐系列尺及相应硬度的铅芯制成,截面为矩形的四棱柱形和扁圆柱形铅芯,镶嵌在木制笔杆中和制成成形铅芯装入出铅芯口为相应截面的活动铅笔中,用以消除由于修磨铅芯而带来的麻烦及被修磨掉的铅芯粉尘对人体产生的危害,同时也提高了所绘制的图形质量。
申请公布号
CN86205384U
申请公布日期
1987.09.12
申请号
CN86205384
申请日期
1986.07.30
申请人
孙宏志
发明人
孙宏志
分类号
B43K19/06;B43K19/18
主分类号
B43K19/06
代理机构
代理人
主权项
1、将铅笔制成专用于绘制工程图加深底图图形时使用的铅笔,其特征在于:将铅芯制成截面为矩形的四棱柱铅芯和扁圆柱铅芯,镶嵌在木制笔杆中或装入出铅芯口为相应截面的活动铅笔中。
地址
机械工业部呼和浩特畜牧机械研究所第二研究室
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