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发明名称
多用简易椭圆规
摘要
一种多用椭圆规,主要是通过以半径为r的小动轮沿着一个半径为2r的圆周上运动时,小动轮上的某些特定点的轮迹为椭圆的一种简单装置。本椭圆规按附图(D)半径为r的小动轮在沿(B)半径为2r的大圆孔的圆周上运动时,小动轮上小圆孔(E)便作椭圆运动而画出椭圆,而当笔尖插在小动轮中心的小孔时,还可以画圆,平常还可利用规体上的直尺及量角器,测量长度和角度,并可帮助画长方形、三角形、菱形等各种几何图形。
申请公布号
CN2041257U
申请公布日期
1989.07.19
申请号
CN88209985.X
申请日期
1988.08.20
申请人
刘宇田
发明人
刘宇田
分类号
B43L11/04
主分类号
B43L11/04
代理机构
代理人
主权项
1、一种多用椭圆规是由三个(或多个)不同直径的大圆配上小动轮及直尺、量角器组成,其特征在于大圆的半径为2r,内圆周上采用齿轮形式及磁性材料制成,小动轮半径为r,圆周上加工成齿轮形式及磁性材料,以防止小动轮沿大圆周运动时两轮打滑,小动轮上按照等速螺线由边缘向中心开一列小孔,每小孔与小动轮中心距相差为1毫米(或任意决定值)。
地址
广西壮族自治区南宁市民族大道33号科技馆
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