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发明名称
吸盘式方便圆规
摘要
一种玻璃黑板用的吸盘式方便圆规,此圆规用吸盘定圆心,吸盘上连接着连接套,连接套又与半径调节杆连接,半径调节杆另一端又与粉笔夹嘴连接,这样可实现在玻璃黑板上画圆或圆弧。圆的半径可通过半径调节杆的蝶形螺母调整,粉笔夹嘴位置通过半径调节杆的另一端的蝶形螺母调整。此圆规结构简单,携带及使用方便,使用者只用一只手就能在玻璃黑板上画出半径较精确的圆。
申请公布号
CN2314950Y
申请公布日期
1999.04.21
申请号
CN98200819.8
申请日期
1998.01.26
申请人
付伦
发明人
付伦
分类号
B43L9/04
主分类号
B43L9/04
代理机构
代理人
主权项
1、一种吸盘式方便圆规,在粉笔夹嘴锥形外壁上连接着紧固套环,粉笔夹嘴上端用螺钉与半径调节杆相连接,其特征是:吸盘用销轴与连接套下端连接,连接套上端用紧定螺钉与右固定板和左固定板固定连接,形成圆孔并与转轴下端部间隙配合连接,转轴上端与半径调节杆用螺钉连接。
地址
100053北京市宣武区槐柏树街3楼105号
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