Electronic control and regulating system
    1.
    发明授权
    Electronic control and regulating system 失效
    电子控制和调节系统

    公开(公告)号:US4392093A

    公开(公告)日:1983-07-05

    申请号:US233587

    申请日:1981-06-04

    IPC分类号: H02P25/14 H02P25/10 H02K23/64

    摘要: An electronic control and regulating system for AC-operated appliances, especially universal motors and with symmetrical phase control. The control circuit includes among other things an inductive current-voltage converter 9, the primary side 8 of which is connected to the load current circuit and in which, in addition to the converter function, the inductivity of the secondary winding 10 is used and becomes a component of a resonant circuit 20 which is tuned approximately to the frequency of the AC voltage source. The feedback variable of the control system is formed by the resonant circuit voltage, i.e. the resonant circuit impedance, which depends not only on the magnitude of the load current but also on the phase angle of the load current. This quasi-resonance effect makes possible a direct influence of the trigger circuit which consists customarily of a trigger capacitor 13, a load resistor 11 and a trigger diode 15 and is possible without excessive use of additional circuit elements.

    摘要翻译: PCT No.PCT / EP80 / 00038 Sec。 371日期:1981年6月4日 102(e)日期1981年1月27日PCT归档1980年6月28日PCT公布。 公开号WO81 / 01085 日期:1981年04月16日。一种用于交流电器的电子控制和调节系统,特别是通用电动机,具有对称的相位控制。 控制电路还包括感应电流 - 电压转换器9,其初级侧8连接到负载电流电路,并且除了转换器功能之外,使用次级绕组10的电感,并且变成 谐振电路20的分量近似地被调谐到交流电压源的频率。 控制系统的反馈变量由谐振电路电压即谐振电路阻抗形成,谐振电路电阻不仅取决于负载电流的大小,而且取决于负载电流的相位角。 这种准共振效应使触发电路的直接影响成为可能,触发电路通常由触发电容器13,负载电阻器11和触发二极管15组成,并且可以不过度使用额外的电路元件。

    Pneumatically powered hand tool with speed-control governor
    2.
    发明授权
    Pneumatically powered hand tool with speed-control governor 失效
    带调速调速器的气动手动工具

    公开(公告)号:US4057113A

    公开(公告)日:1977-11-08

    申请号:US711411

    申请日:1976-08-03

    IPC分类号: B23B45/04 B23Q5/027

    CPC分类号: B23B45/04 Y10T137/108

    摘要: A pneumatic hand tool comprises a housing having a compressed-gas inlet and provided with a pneumatically powered motor which carries on one side a tool holder such as a chuck and on the other side a governor. A speed-control valve is operated by the governor and can close a first air passage between the inlet and the motor to maintain the motor speed below a predetermined limit. Another passage is provided which bypasses the governor-controlled speed-control valve and a valve is provided in this bypass conduit which is openable in order to allow the hand tool to operate at a speed substantially above the governor-established speed.

    摘要翻译: 气动手动工具包括具有压缩气体入口并具有气动马达的壳体,该气动马达在一侧承载诸如卡盘的工具架,另一侧承载调速器。 速度控制阀由调速器操作,并且可以关闭入口和电动机之间的第一空气通道,以将电动机速度保持在预定的极限以下。 提供另一个通道,其绕过调速器控制的速度控制阀,并且在该旁路管道中设置有阀,该旁路管道可打开,以便允许手动工具以大大高于调速器建立速度的速度运行。

    Power tool with dust collecting arrangement
    3.
    发明授权
    Power tool with dust collecting arrangement 失效
    电动工具带集尘装置

    公开(公告)号:US4090297A

    公开(公告)日:1978-05-23

    申请号:US731342

    申请日:1976-10-12

    CPC分类号: B23D49/162 B23D59/006

    摘要: A hand-guided power tool comprises a housing and a base plate mounted below the housing. The base plate is adapted to be juxtaposed with an object which has material to be removed therefrom. A tool element such as a reciprocable cutting blade extends through a slot formed in the base plate and is operative for removing material from the object with concomitant production of undesirable particulate material in the circumambient region of the element. A channel member is also mounted below the housing but at a distance from the base plate to thereby form a suction channel which is in communication with the circumambient region of the tool element and which is operative for removing and guiding the particulate material from the tool element.

    摘要翻译: 手动引导电动工具包括安装在壳体下方的壳体和底板。 基板适于与具有要从其中去除的材料的物体并置。 诸如可往复切割刀片的工具元件延伸穿过形成在基板中的槽,并且可操作用于从物体移除材料,同时在元件的外周区域中产生不期望的颗粒材料。 通道构件也安装在壳体的下方但与基板一段距离处,从而形成与工具元件的外围区域连通并且可操作用于从工具元件移除和引导颗粒材料的抽吸通道 。

    Electronic two-hand safety system for power tools
    4.
    发明授权
    Electronic two-hand safety system for power tools 失效
    电动工具电子双手安全系统

    公开(公告)号:US4493377A

    公开(公告)日:1985-01-15

    申请号:US313648

    申请日:1981-10-22

    IPC分类号: H03K17/96 F16P3/20

    CPC分类号: F16P3/20

    摘要: To permit operation of the power tool only if both hands of an operator are engaged, the tool is formed with a handle portion which has a sensing surface thereon, electrically coupled to a current flow sensing circuit, preferably including an opto-coupler or a field-effect transistor (FET) circuit which permits firing of a triac, thyristor, or the like only if current flows over the sensing surface by area contact therewith. The sensing surface is energized, preferably, from a resistive or capacitative voltage divider; the capacitative voltage divider has the advantage that the triac firing circuit can cause the triac to fire during null or zero crossings of ac supplied power. If a locking-type switch is used, two handles or touch-areas are needed; if a spring-loaded switch is provided, it can function as one safety element, and a touch-area sensing surface as the other.

    摘要翻译: 只有当操作者的双手接合时才允许动力工具的操作,该工具形成有手柄部分,手柄部分具有感测表面,其电耦合到电流流动检测电路,优选地包括光耦合器或场 只有当电流通过与其接触的区域与电流流过感测表面时,晶体管(FET)电路才允许三端双向可控硅开关元件,晶闸管等的点火。 感测表面优选地由电阻或电容分压器供电; 电容分压器具有的优点是,三端双向可控硅开关电路可以在交流供电的零通或零交叉期间引起三端双向可控硅开关。 如果使用锁定式开关,则需要两个手柄或触摸区域; 如果设有弹簧开关,它可以作为一个安全元件,另一个是触摸区域感应表面。

    Hedge trimmer
    5.
    发明授权
    Hedge trimmer 失效
    树皮修剪器

    公开(公告)号:US4216582A

    公开(公告)日:1980-08-12

    申请号:US962756

    申请日:1978-11-21

    IPC分类号: A01G3/04 A01G3/053 B26B19/02

    CPC分类号: A01G3/053

    摘要: A hedge trimmer has at least one moveable blade and a second blade. The second blade has trapezoidal teeth. The first blade has rectangular teeth which have a broadened end portion, but, contrary to the prior art, the teeth of the first blade are at least twice as long as those of the second blade. As in the prior art hedge trimmers, the broadest part of each tooth is defined by two juncture points, one on each side of the tooth. For additional safety, in accordance with the invention, the maximum distance between adjacent juncture points of adjacent teeth is 14 mm.

    摘要翻译: 树篱修剪器具有至少一个可移动刀片和第二刀片。 第二个叶片具有梯形齿。 第一叶片具有矩形齿,其具有加宽的端部部分,但是与现有技术相反,第一叶片的齿比第二叶片的齿的长度至少是两倍。 如在现有技术的树篱修剪器中,每个齿的最宽部分由两个接合点限定,一个在每个齿上。 为了额外的安全性,根据本发明,相邻齿的相邻接合点之间的最大距离为14mm。

    Hand tool machine, in particular drilling machine
    6.
    发明授权
    Hand tool machine, in particular drilling machine 失效
    手动工具机,特别是钻床

    公开(公告)号:US4673318A

    公开(公告)日:1987-06-16

    申请号:US531592

    申请日:1983-09-12

    摘要: A hand tool machine, in particular a drill machine, has a feeler device for determining the diameter of a tool element to be used with the hand tool machine. For measuring the tool elements prior to insertion into the clamping element of the hand tool machine, a feeler device is provided which is arranged separately from the clamping element and is connected with an indicator. The diameter determined by the feeler device is administered to a control unit which is controlling the driving motor. The control unit can also receive in addition further information concerning the material to be treated by means of an input device. In view of the measuring value with regard to the diameter of the tool element and the administered information concerning the material, the optimum rotary speed for the tool element and consequently for the driving motor is determined and adjusted.

    摘要翻译: 一种手动工具机械,特别是钻机,具有用于确定与手动工具机器一起使用的工具元件的直径的探针装置。 为了在插入手动工具机的夹紧元件之前测量刀具元件,提供了一个与夹紧元件分开设置并与指示器连接的探针装置。 由测距装置确定的直径被施加到控制驱动电动机的控制单元。 控制单元还可以通过输入装置另外接收关于待处理材料的进一步信息。 考虑到关于工具元件的直径的测量值和关于材料的管理信息,确定和调整用于工具元件以及因此对于驱动电动机的最佳转速。