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    • 2. 发明授权
    • Structure of isometric ellipse scale
    • 等距椭圆尺度的结构
    • US5065523A
    • 1991-11-19
    • US637677
    • 1991-01-07
    • Chieh-Tseng Chiang
    • Chieh-Tseng Chiang
    • B43L11/04
    • B43L11/043
    • An isometric ellipse scale for drawing ellipse of different size, comprising a body, a plurality of isometric ellipse molding plates that set one inside another, two fastening slides, and a casing for keeping said parts. The body and the isometric ellipse molding plates have each two pairs of parallel rails at two opposite ends and respectively longitudinally aligned so that the fastening slide can be respectively fastened therein to selectively secure the isometric ellipse molding plates to the body for drawing ellipse. The casing has an elliptical, raised portion at the center of the inner bottom thereof and made in size according to the elliptical center hole of the smallest one of the isometric ellipse molding plates for holding the isometric ellipse molding plates and the body in position.
    • 一种用于绘制不同尺寸的椭圆的等距椭圆标尺,包括一个主体,多个等距椭圆形模板,一个设置在另一个内部,两个紧固滑块和用于保持所述部件的壳体。 主体和等轴椭圆形成型板在两个相对端分别具有两对平行导轨,并分别纵向排列,使得紧固滑块可以分别固定在其中,以将等轴椭圆形模板选择性地固定在主体上用于拉伸椭圆形。 壳体在其内底的中心处具有椭圆形的凸起部分,并且根据等距椭圆形模制板中最小的一个等距椭圆形模制板的椭圆形中心孔的尺寸制成,用于将等距椭圆形模板和本体保持就位。