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    • 6. 发明授权
    • Cutting instrument or tool
    • 切割仪器或工具
    • US5448833A
    • 1995-09-12
    • US139875
    • 1993-10-22
    • Michael Coon
    • Michael Coon
    • B23D51/01B26B9/02B28D1/12B26B3/08
    • B28D1/127B23D51/01B26B9/02
    • A hand saw principally for use on sheet rock or gypsum wall board having a bi-partite handle and a thumb stop. The saw blade is provided with in-line teeth which cut on the forward and backward motion of the saw and which are provided with large cleanouts. The cutting teeth are also in line and the saw blade itself is thicker on the cutting surfaces than on the top. The arrangement permits a higher grade of premium steel to be used and the teeth can be readily sharpened. The saw may also have a blade that is sharpened on the top to a cutting edge resulting in an all purpose cutting instrument.
    • 手锯主要用于具有双分柄和拇指止挡的板岩或石膏墙板上。 锯片设置有切割锯的向前和向后运动并且具有大清洁件的直列齿。 切割齿也在一起,锯片本身在切割表面上比在顶部更厚。 该装置允许使用较高等级的优质钢,并且可以容易地磨削牙齿。 锯还可以具有在顶部被切割成切割边缘的刀片,从而形成通用的切割工具。