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公开(公告)号：US4467877A
公开(公告)日：1984-08-28
申请号：US343649
申请日：1982-01-28
IPC分类号： B25B23/145 , B23Q5/06 , F16D43/20
CPC分类号： B25B23/145
摘要： A pneumatic screwdriver or nutsetter includes a manually actuated electrical switch and a solenoid operated motive air shutoff valve which includes a spring biased reset element for moving the shutoff valve closure element from a valve closed position to a valve open position prior to introduction of compressed air to the tool motor. The reset element is retracted away from the closure element by pressurized air upon startup of a tool operating cycle. The closure element is released upon deenergization of the solenoid at a predetermined signal to close the shutoff valve. In an alternate embodiment the switch is replaced by a pneumatic valve and the reset element is pressure air biased to move the shutoff element from the shutoff valve closed position to the open position.
摘要翻译： 气动螺丝刀或螺母装置包括手动致动的电气开关和电磁操作的动力空气截止阀，其包括弹簧偏置的复位元件，用于在将压缩空气引入压缩空气之前将截止阀闭合元件从阀关闭位置移动到阀打开位置 工具电机。 在启动工具操作循环时，复位元件通过加压空气从闭合元件缩回。 闭合元件在螺线管以预定信号断电时释放，以关闭截止阀。 在替代实施例中，开关由气动阀替代，并且复位元件被压力空气偏压以将关闭元件从截止阀关闭位置移动到打开位置。
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公开(公告)号：US4320806A
公开(公告)日：1982-03-23
申请号：US31730
申请日：1979-04-20
IPC分类号： B25B23/145 , B23Q5/06
CPC分类号： B25B23/145
摘要： A pneumatic screwdriver or nutsetter includes a manually actuated electrical switch and a solenoid operated motive air shutoff valve which includes a spring biased reset element for moving the shutoff valve closure element from a valve closed position to a valve open position prior to introduction of compressed air to the tool motor. The reset element is retracted away from the closure element by pressure air on startup of a tool operating cycle. The closure element is released upon deenergization of the solenoid at a predetermined signal to close the shutoff valve. In an alternate embodiment the switch is replaced by a pneumatic valve and the reset element is pressure air biased to move the shutoff element from the shutoff valve closed position to the open position.
摘要翻译： 气动螺丝刀或螺母装置包括手动致动的电气开关和电磁操作的动力空气截止阀，其包括弹簧偏置的复位元件，用于在将压缩空气引入压缩空气之前将截止阀闭合元件从阀关闭位置移动到阀打开位置 工具电机。 在启动工具操作循环时，复位元件通过压力空气从闭合元件缩回。 闭合元件在螺线管以预定信号断电时释放，以关闭截止阀。 在替代实施例中，开关由气动阀替代，并且复位元件被压力空气偏压以将关闭元件从截止阀关闭位置移动到打开位置。
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公开(公告)号：US4124026A
公开(公告)日：1978-11-07
申请号：US795682
申请日：1977-05-11
CPC分类号： A61F2/4607 , A61B17/164 , A61F2/36
摘要： An artificial hinge pin having a self-cutting threaded portion is inserted into a prepared bone with reduced reaction moment by a hand-held power tool which imposes a rotary oscillating movement on the pin during the insertion process. The tool has an output shaft driven by an overriding ratchet type coupling providing repeated impacts to the output shaft. A plurality of elastic rods connected to the output shaft are arranged coaxially around the shaft and are anchored to a rotary brake disk. Braking force on the disk is controlled by an adjustable compression spring. The eigenfrequency of the elastic system comprising the rods and output shaft may be adjusted to the impact frequency of the ratchet coupling.
摘要翻译： 具有自切螺纹部分的人造铰链销通过手持式电动工具以缩小的反作用力矩插入准备好的骨头中，该手持式电动工具在插入过程中在销上施加旋转摆动运动。 该工具具有由超越棘轮式联轴器驱动的输出轴，为输出轴提供反复冲击。 连接到输出轴的多个弹性杆同轴地布置在轴上并且被锚固到旋转制动盘。 盘上的制动力由可调压缩弹簧控制。 包括杆和输出轴的弹性系统的本征频率可以被调节到棘轮联轴器的冲击频率。
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