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    • 10. 发明授权
    • Illuminated screwdriver
    • 照明螺丝刀
    • US4283757A
    • 1981-08-11
    • US56280
    • 1979-07-09
    • A. Eugene NalbandianJames P. Sullivan
    • A. Eugene NalbandianJames P. Sullivan
    • B25B23/18
    • B25B23/18
    • Disclosed herein is an illuminated screw driver or hand tool. The hand tool has a hollow handle body within which is disposed at least one light bulb, one power source and a spring for biasing the light bulb and the power source out of contact with one another. Rotation of an end cap switch moves the power source towards contact with the light bulb thereby completing the circuit and lighting the bulb. Alternate embodiments illustrate illuminated screwdrivers having one, two or three such light bulbs and power sources and spring means for biasing each bulb and power source out of contact with one another. In the embodiment having three light bulbs there is provided a mechanism for selectively turning on one, two or all three of the light bulbs.
    • 本文公开了一种照明螺丝刀或手动工具。 手工工具具有中空的手柄主体,在该主体内设置有至少一个灯泡,一个电源和弹簧,用于使电灯泡和电源彼此偏离接触。 端盖开关的旋转使电源与灯泡接触,从而完成电路并点亮灯泡。 替代实施例示出了具有一个,两个或三个这种灯泡和电源的照明螺丝刀和用于偏置每个灯泡和电源彼此接触的弹簧装置。 在具有三个灯泡的实施例中,提供了用于选择性地打开一个,两个或全部三个灯泡的机构。