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公开(公告)号：US3827470A
公开(公告)日：1974-08-06
申请号：US33693773
申请日：1973-03-01
IPC分类号： B25B15/04
CPC分类号： B25B13/466 , B25B15/04
摘要： A ratchet screw driver is shown. The screw driver is comprised of a blade carrying shank which is intimately slidable within a sleeve housing provided in the handle. Complementary ratchet teeth are formed on a sloping mating surface of the handle and the shank. The ratchet teeth are normally maintained in a spaced disengaged position from each other by a biassing means in the handle. The ratchet teeth engage with each other when the blade is pressed downwards into the slot of the screw to be operated.
摘要翻译： 显示了一个棘轮螺丝刀。 所述螺丝刀包括一个承载柄的刀片，所述刀柄可在设置在所述手柄中的套筒壳体内紧密地滑动。 互补棘轮齿形成在手柄和柄部的倾斜配合表面上。 棘轮齿通常通过手柄中的偏压装置彼此保持在彼此间隔开的位置。 当刀片向下压入要操作的螺钉的槽中时，棘齿彼此接合。
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公开(公告)号：US3825092A
公开(公告)日：1974-07-23
申请号：US24258172
申请日：1972-04-10
CPC分类号： H01H3/0226 , B60K28/04 , Y10T24/3913 , Y10T24/45429
摘要： The device is used in conjunction with conveyances powered by internal combustion engines having electrical ignition systems. The device includes an on-off switch which is connected in series with the ignition system and which includes a plunger which moves from a retracted position in which the electrical system is activated to an extended position in which the engine is shut down. A cord is connected at one end to the plunger and at the other end, to attachment means which is adapted to be releasably connected to the driver of the conveyance. Incorporated in the cord is a severable member which, upon application by the cord of a tensile force greater than the force required to move the plunger from a retracted position to an extended position under normal weather conditions, separates so that the cord no longer interconnects the plunger and the attachment means. The cord is of sufficient length to accommodate movement of the driver while on the conveyance only so that upon removal of the driver from the conveyance, the cord becomes taut with resulting movement of the plunger from a retracted to an extended position thereby shutting off the engine.
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