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    • 59. 再颁专利
    • Drafting device
    • 起草装置
    • USRE33654E
    • 1991-08-06
    • US501004
    • 1990-03-29
    • Poul E. Hoegh
    • Poul E. Hoegh
    • B43L7/04B43L13/14
    • B43L7/04B43L13/141
    • A drafting device (10) is provided for drawing parallel lines as well as true perspective lines, comprising carriage means (11) movable over a drafting surface (12) on wheel assembly means (20) and (21). A ruler (124) is located on carriage means (11) and has an unobstructed drafting edge (125) constantly co-linear with a true radial line to a chosen vanishing point. Selectively variable ratio transmission means (31), between wheel assembly means (20) and (21), permit ruler (124) to move over drafting surface (12) in a parallel or an arcuate manner about a preset vanishing point on or outside drafting surface (12). Magnet means are included for maintaining wheel assemblies (20) and (21) in frictional contact with drafting surface (12) and brake means are included to lock carriage (11) on drafting surface (12) in selected positions. Presetable stop means are provided to preset a plurality of vanishing points.
    • 60. 发明授权
    • Guiding device for a computer mouse
    • 电脑鼠标指导装置
    • US4944095A
    • 1990-07-31
    • US453862
    • 1989-12-20
    • James Anglehart
    • James Anglehart
    • B43L7/04G06F3/039
    • G06F3/039B43L7/04
    • There is disclosed a guiding device for use with a computer mouse, the device comprising a body, a friction strip provided on an edge member of the body for securing the mouse to the body while allowing the mouse to operate on a working surface, a bearing fixed to the body, a roller including a horizontal shaft having a longitudinal axis and two ends, the shaft being rotatable in the bearing, the bearing being axially translatable on the shaft, the roller further including working surface engaging wheels fixed to each end of the two ends, the roller substantially supporting the body, and a sight connected to the body for guiding the device to trace an image on the working surface, the device being able to be moved on the working surface in a direction of the axis by a translation of the bearing on the shaft and in a direction perpendicular to the axis by a rolling of the wheels on the working surface.
    • 公开了一种用于计算机鼠标的引导装置,该装置包括主体,设置在主体的边缘部件上的摩擦带,用于将鼠标固定到主体上,同时允许鼠标在工作表面上操作,轴承 固定到所述主体上的滚子,所述滚子包括具有纵向轴线和两端的水平轴,所述轴可在所述轴承中旋转,所述轴承在所述轴上可轴向平移,所述滚轮还包括固定到所述轴的每一端的工作表面接合轮 两端,所述辊基本上支撑所述主体,以及连接到所述主体的瞄准器,用于引导所述装置以在所述工作表面上追踪图像,所述装置能够在所述工作表面上沿所述轴的方向通过平移 通过车轮在工作表面上的滚动,在轴上以及垂直于轴线的方向上的轴承。