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    Adjustable trigger stop
    81.
    发明授权
    Adjustable trigger stop 失效
    可调触发停止

    公开(公告)号：US4276461A

    公开(公告)日：1981-06-30

    申请号：US90116

    申请日：1979-11-01

    Applicant: Earl T. Piber

    Inventor： Earl T. Piber

    IPC: H01H9/06

    CPC classification number: H01H9/061

    Abstract: A portable electric tool speed control switch of the trigger actuated type having an adjustable trigger stop that affords selective setting of the maximum speed point to any one of a multiplicity of speed points. The trigger stop is integrally mounted in the trigger and abuts the switch housing to limit trigger depression. A spring-biased plunger pin (16) extends rearwardly through the trigger head (10) toward the housing and an adjusting knob (20) recessed in and rotatably mounted in the trigger head has a notched helical track (20b) that engages a tooth at the head of the pin so that rotation of the knob adjusts the plunger pin to provide a trigger stop by abutting the housing at the selected point of trigger depression thus setting the speed point of the tool and affording returning repeatedly to the same speed point.

    Abstract translation: 一种具有触发器类型的便携式电动工具速度控制开关，其具有可调节的触发停止，其将最大速度点的选择性设置提供给多个速度点中的任何一个。 触发器一体地安装在触发器中并与开关壳体抵接以限制触发器的下压。 弹簧偏置的柱塞销（16）向后延伸穿过触发头（10）朝向壳体，并且凹入并可旋转地安装在触发头中的调节旋钮（20）具有切口螺旋形轨道（20b），其与 销的头部，使得旋钮的旋转调节柱塞销，以通过在所选择的触发压力点处抵靠壳体来提供触发器停止，从而设定工具的速度点并提供重复返回到相同的速度点。

    Industrial reversing speed control trigger switch with snap-in modules
    82.
    发明授权
    Industrial reversing speed control trigger switch with snap-in modules 失效
    具有卡扣模块的工业倒车速度控制触发开关

    公开(公告)号：US4097704A

    公开(公告)日：1978-06-27

    申请号：US710921

    申请日：1976-08-02

    Applicant: Earl T. Piber

    Inventor： Earl T. Piber

    IPC: H01H9/06 ,  H01H9/52 ,  H01H13/08 ,  H02P7/00

    CPC classification number: H01H9/061 ,  H01H9/063 ,  H01H9/52 ,  Y10S388/937 ,  Y10T307/832

    Abstract: An industrial grade trigger switch having an on-off switch and a resistor controlled speed control circuit both controlled by trigger depression and a reversing switch provided with an operating lever overlying the trigger, and characterized by a large heat sink for the solid state current control elements for continuous service, a large substrate area for the speed control circuit, higher current rating double-pole wiping contacts, relatively simple metal parts, and the capability of being mounted also in consumer grade tools. The switch has modular construction with snap-in coupling of reversing switch and base to the frame.

    Abstract translation: 一种工业级触发开关，其具有开关开关和电阻控制的速度控制电路，两者均由触发器下压控制，反转开关设置有覆盖触发器的操作杆，其特征在于用于固态电流控制元件的大散热器 为了持续服务，用于速度控制电路的大型基板面积，较高额定电流的双极擦拭触点，相对简单的金属部件，以及也被安装在消费级工具中的能力。 该开关具有模块化结构，将倒车开关和底座卡入耦合到框架。

    Electronic switch for controlling the speed of a motor
    83.
    发明授权
    Electronic switch for controlling the speed of a motor 失效
    用于控制电机转速的电子开关

    公开(公告)号：US4002961A

    公开(公告)日：1977-01-11

    申请号：US610737

    申请日：1975-09-05

    Applicant: Ten-Hsiang Chang

    Inventor： Ten-Hsiang Chang

    IPC: H01H9/06 ,  H01H13/08

    CPC classification number: H01H9/061 ,  Y10S388/917 ,  Y10S388/937

    Abstract: An electronic switch for variably controlling the speed of an electric motor, comprising a stationary member, a trigger member, clip means for securing said trigger member slidably relative to said stationary member, a pair of electric cords extending from the inside of said trigger member for connecting said electronic switch in circuit with an electric motor and power source, switching means and a solid-state semiconductor control device supported within said trigger member; characterized in that, said switching means comprising two sets of contacts, with one set including three electrically conductive contacts, another set including one electrically conductive contact and a resistor for providing various resistance values, disposed on said trigger member in spaced relation to each other, and two electrically conductive bridging contacts mounted on said stationary member in isolated relation to each other for contacting with the respective set of contacts; while said trigger member being manually actuated with respect to said stationary member, the first bridging contact is movable among a non-bridging position wherein said first bridging contact engages with the first contact of the said three contacts, a first bridging position wherein said first bridging contact engages with the first and the second contacts of the said three contacts, and a second bridging position wherein said first bridging contact engages with the first and the third contacts of the said three contacts; simultaneously, the second bridging contact is movable with one end thereof slidably engaging with the contact of the associated set and the other end thereof slidably engaging with said resistor for providing various resistance values in a manner to control the application of variable magnitudes of electrical energy, for selectively varying the speed of said electric motor.

    Abstract translation: 一种用于可变地控制电动机的速度的电子开关，包括固定构件，触发构件，用于相对于所述静止构件可滑动地固定所述触发构件的夹子装置，从所述触发构件的内部延伸的一对电线， 将所述电子开关连接到电动机和电源，开关装置和支撑在所述触发器构件内的固态半导体控制装置; 其特征在于，所述开关装置包括两组触点，一组包括三个导电触点，另一组包括一个导电触点和用于提供各种电阻值的电阻器，它们以彼此间隔的关系设置在所述触发器构件上， 以及两个导电桥接触点，其彼此隔离地安装在所述固定构件上，用于与相应的一组触点接触; 而所述触发器构件相对于所述固定构件手动致动，所述第一桥接触头可在非桥接位置之间移动，其中所述第一桥接触点与所述三个触头的第一触点接合，第一桥接位置，其中所述第一桥接 触头与所述三个触点的第一和第二触点接合，以及第二桥接位置，其中所述第一桥接触点与所述三个触头的第一和第三触点接合; 同时，第二桥接接触件可移动，其一端可滑动地与相关联的组件的接触部分接合，另一端部可滑动地与所述电阻器接合，以便以控制电能的可变大小的方式提供各种电阻值， 用于选择性地改变所述电动机的速度。

    Trigger operated speed control assembly for electrical motors
    84.
    发明授权
    Trigger operated speed control assembly for electrical motors 失效
    电动马达操作速度控制装置

    公开(公告)号：US3660742A

    公开(公告)日：1972-05-02

    申请号：US3660742D

    申请日：1970-06-24

    Applicant: SKIL CORP

    Inventor： GAWRON ALEX F

    IPC: H01H9/06 ,  H02P7/292 ,  H02P5/16

    CPC classification number: H02P7/293 ,  H01H9/061 ,  Y10S388/917 ,  Y10S388/937

    Abstract: A trigger operated switch includes three contact strips and a bypass contact button. The trigger carries three slides for respective sliding engagement with such strips. Two of the strips are adapted for connection with a speed control circuit, one strip cooperating with one slide to define a variable resistor of such circuit. When the trigger is fully depressed, one of the slides is in engagement with the contact button for bypassing the speed control circuit.

    Abstract translation: 触发操作开关包括三个触点条和旁路触点按钮。 触发器带有三个滑块，用于与这些条带相应的滑动接合。 两个条带适于与速度控制电路连接，一个条与一个幻灯片配合以限定这种电路的可变电阻器。 当触发器完全按下时，其中一个滑块与接触按钮接合，以绕过速度控制电路。

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