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公开(公告)号：US09587648B2
公开(公告)日：2017-03-07
申请号：US15003579
申请日：2016-01-21
IPC分类号： F04D29/66 , F04D25/06 , F04D25/08 , F04D29/32 , F04D29/54 , F04D19/00 , F04D29/52 , A01G1/12 , E01H1/08
CPC分类号： F04D29/667 , A01G20/43 , E01H1/0809 , F04D19/002 , F04D25/068 , F04D25/086 , F04D29/325 , F04D29/522 , F04D29/545
摘要： A blower has a blower tube and a fan unit that conveys an air flow through the blower tube. The fan unit has a fan having a fan axis. The fan conveys the air flow in the direction of the fan axis. The air flow exits the blower tube in an outflow direction at a tube aperture. The handle has on its lower side a grasping point, which in the operating position of the blower, lies on a vertical axis through the blower's center of gravity. The tube aperture has a center axis that is oriented in the outflow direction. So that the forces received by the user at the handle during operation can be made smaller, it is provided for the spacing from the center axis of the tube aperture to the grasping point to be smaller than the spacing from the fan axis to the grasping point.
摘要翻译： 鼓风机具有鼓风机管和风扇单元，其传送通过鼓风机管的空气流。 风扇单元具有具有风扇轴的风扇。 风扇沿风扇轴方向传送空气流。 气流在管孔处以流出方向离开鼓风机管。 手柄在其下侧具有抓握点，其在鼓风机的操作位置处通过鼓风机的重心位于垂直轴上。 管孔具有沿流出方向取向的中心轴线。 使得使用者在操作期间在手柄处接收的力可以做得更小，这是为了从管孔的中心轴线到抓取点的距离小于从风扇轴线到抓取点的间隔 。
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公开(公告)号：USD779744S1
公开(公告)日：2017-02-21
申请号：US29533339
申请日：2015-07-16
设计人： Andreas Weinberg , Martin Ruf
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公开(公告)号：US09534528B2
公开(公告)日：2017-01-03
申请号：US13707832
申请日：2012-12-07
CPC分类号： F02B15/00 , F02M1/16 , F02M37/0023 , F02M37/0029 , F02M37/007 , F02M37/16 , F02M37/18 , F02M37/20 , F02M69/10
摘要： An internal combustion engine has a fuel system that has a fuel valve with a housing, wherein in the housing a fuel chamber is formed. A fuel pump pumps fuel from a fuel tank into the fuel chamber. A conveying pump provides forced conveyance of fuel into the fuel system. A feed line is connected to the fuel chamber of the fuel valve. The conveying pump is arranged in the feed line and supplies fuel to the fuel chamber. A relief line is connected to the fuel chamber of the fuel valve and a first valve is arranged in the relief line.
摘要翻译： 内燃机具有燃料系统，该燃料系统具有带有壳体的燃料阀，其中在壳体中形成燃料室。 燃料泵将燃料从燃料箱泵入燃料室。 输送泵提供强制的燃料输送到燃料系统中。 进料管线连接到燃料阀的燃料室。 输送泵布置在进料管线中并将燃料供应到燃料室。 救生线连接到燃料阀的燃料室，第一阀布置在救生线中。
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84.发明授权Capacitor power supply unit for small electrical loads with a high current requirement 有权具有高电流要求的小型电气负载的电容器电源单元公开(公告)号：US09525360B2
公开(公告)日：2016-12-20
申请号：US14708007
申请日：2015-05-08
摘要： A capacitor power supply unit converts a mains voltage (U) into a lower operating voltage (V1) for a controller and a supply voltage (V2) for an electrical small load. A series circuit including a mains capacitor and a zener diode is connected to the mains voltage (U) whereat the supply voltage (V2) for an electrical small load having a permissible operating voltage is tapped off. The capacitor power supply unit provides for the supply voltage (V2) to be greater than the permissible operating voltage of the electrical small load and for the small load to be connected to the supply voltage (V2) via a buck converter. Here, the buck converter is controlled as a current source having a variable operating frequency.
摘要翻译： 电容器电源单元将电源电压（U）转换为用于控制器的较低工作电压（V1）和用于电小负载的电源电压（V2）。 包括电源电容器和齐纳二极管的串联电路连接到电源电压（U），其中具有允许的工作电压的电气小负载的电源电压（V2）被分接。 电容器电源单元提供电源电压（V2）大于电气小负载的允许工作电压，并通过降压转换器将小负载连接到电源电压（V2）。 这里，降压转换器被控制为具有可变工作频率的电流源。
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公开(公告)号：US09518616B2
公开(公告)日：2016-12-13
申请号：US14669218
申请日：2015-03-26
发明人： Günter Wolf , Marcel Förster
IPC分类号： F16D13/62 , F16D43/18 , B21D28/00 , F16D43/14 , F16D67/02 , B21J5/00 , B27B17/10 , F16D13/64
CPC分类号： F16D13/62 , B21D28/00 , B21J5/00 , B27B17/10 , F16D13/644 , F16D43/14 , F16D43/18 , F16D67/02
摘要： A hand-held power tool is provided with a drive motor and a clutch connected to the drive motor. The drive motor drives a tool member through the clutch. The clutch has a clutch drum with a circumferential wall provided with an end face. A follower member engages a groove in the circumferential wall of the clutch drum and a driven element is connected to the follower member to be driven by the follower member. The groove extends from the end face of the circumferential wall into the circumferential wall and has a groove bottom and two groove sides positioned opposite each other. The circumferential wall has a protrusion located at the groove bottom. The protrusion has a protrusion thickness measured at the groove bottom that amounts to at least approximately 110% of a wall thickness of the circumferential wall measured at the two groove sides.
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公开(公告)号：US09468143B2
公开(公告)日：2016-10-18
申请号：US13903036
申请日：2013-05-28
发明人： Thomas Stark
CPC分类号： A01D34/73 , B23D61/021 , Y10T83/9319 , Y10T83/936
摘要： A cutting blade for a hand-guided trimmer with a drive motor has a disk-shaped base member with cutting teeth disposed about a circumference of the base member. The base member has a first face and a second face opposite the first face. The cutting teeth each have a tooth face edge, the tooth face edge leading in driving direction of the cutting blade and extending radially, and a tooth back edge extending in the circumferential direction. The tooth face edge and the tooth back edge of the cutting teeth are alternatingly ground on the first face or the second face in the circumferential direction and define together a common cutting tip that is leading in the drive direction. Several of the cutting tips of the cutting teeth that are sequentially arranged in the circumferential direction are positioned in a common plane.
摘要翻译： 具有驱动电动机的手动修剪器的切割刀片具有围绕基部构件的圆周设置的切割齿的盘形基座构件。 基部构件具有与第一面相对的第一面和第二面。 切削齿各自具有齿面边缘，齿面沿着切割刀片的驱动方向前进并且径向延伸，并且沿圆周方向延伸的齿背边缘。 切齿的齿面边缘和齿背缘在圆周方向上在第一面或第二面上交替地研磨，并且在驱动方向上一起形成共同的切割尖端。 沿圆周方向依次布置的切削齿的几个切削尖端位于共同的平面中。
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88.发明授权公开(公告)号：US09322329B2
公开(公告)日：2016-04-26
申请号：US13956088
申请日：2013-07-31
发明人： Tim Gegg , Armin Koelmel , Manuel Dangelmaier
CPC分类号： F02B63/02 , F02D31/009
摘要： A method controls the rpm of a combustion engine in a hand-held work apparatus such as a brushcutter. The engine drives a work tool via a clutch which engages as a function of the engine rpm (n). A spark plug is arranged in the combustion chamber and is driven by an ignition unit. During start of the engine, an rpm lock circuit is active and defines a control variable as a function of the instantaneous rpm (nact) of the engine. According to the magnitude of this control variable, operating parameters of the engine are adapted to change the instantaneous rpm (nact). A control variable is determined for the adaptation of the operating parameters by the rpm lock circuit. The switch-off of the rpm lock circuit is provided when the control variable of the control lies outside a predetermined bandwidth of the absolute magnitude of the control variables.
摘要翻译： 一种方法控制诸如刷子之类的手持式工作装置中的内燃机的转速。 发动机通过作为发动机转速（n）的函数进行啮合的离合器驱动作业工具。 火花塞设置在燃烧室中并由点火单元驱动。 在发动机启动期间，转速锁定电路是有效的，并且根据发动机的瞬时转速（nact）定义控制变量。 根据该控制变量的大小，发动机的运行参数适于改变瞬时转速（nact）。 确定由rpm锁定电路适应操作参数的控制变量。 当控制的控制变量位于控制变量的绝对大小的预定带宽之外时，提供转速锁定电路的关断。
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公开(公告)号：US09320195B2
公开(公告)日：2016-04-26
申请号：US14196048
申请日：2014-03-04
IPC分类号： B26B7/00 , A01D34/416
CPC分类号： A01D34/416 , A01D34/4166
摘要： A trimmer head for a trimmer has a base member having a trimmer line opening. A clamping device arranged in the base member clamps a trimmer line that defines a cutting plane when rotated. The clamping member of the clamping device is rotatably disposed on a pivot bolt having a pivot axis positioned in a plane that is parallel to the cutting plane. The clamping member is spring-loaded by a clamping spring into a clamping position. The trimmer line is secured in the clamping position between a clamping surface and the clamping member. A centrifugal force acting on the trimmer line loads the clamping member in the clamping position. A U-shaped bracket has bracket legs connected by a stay. The clamping member is positioned between the bracket legs. The pivot bolt is supported on the bracket leg ends. The stay of the U-shaped bracket forms the clamping surface.
摘要翻译： 用于修剪器的修剪头具有具有修剪线开口的基部构件。 布置在基部构件中的夹紧装置夹紧在旋转时限定切割平面的修剪线。 夹紧装置的夹紧构件可旋转地设置在枢转螺栓上，该枢转螺栓具有定位在平行于切割平面的平面中的枢转轴线。 夹紧构件通过夹紧弹簧弹簧加载到夹紧位置。 修剪线固定在夹紧位置和夹紧构件之间的夹紧位置。 作用在修剪线上的离心力将夹紧构件装载在夹紧位置。 U形支架具有通过支撑连接的支架腿。 夹紧构件定位在支架腿之间。 枢轴螺栓支撑在支架腿端。 U形支架的支撑形成夹紧表面。
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公开(公告)号：US09306478B2
公开(公告)日：2016-04-05
申请号：US14493896
申请日：2014-09-23
CPC分类号： H02P3/22 , B27B17/083 , H02P3/18
摘要： The invention is directed to a method for braking an electric drive motor having a stator and a rotor. The stator has field coils which have electrical phase connections for three motor phases. To generate an electromagnetic rotating field driving the rotor, the phase connections are connected to a supply voltage via switches actuated by a control unit which closes the switches depending on the rotary position of the rotor. To brake a rotating rotor, a braking current is generated by short-circuiting the phase connections. A phase short circuit is switched in between each two phase connections of the field coils with a preset temporal sequence to brake the rotor. The phase connections short-circuited are each selected corresponding to the rotary position of the rotor so that that field coil is short circuited in which the voltage induced by the magnetic field of the rotating rotor passes through its maximum.
摘要翻译： 本发明涉及一种制动具有定子和转子的电动马达的方法。 定子具有励磁线圈，其具有用于三个电机相位的电相连接。 为了产生驱动转子的电磁旋转场，相位连接通过由控制单元致动的开关连接到电源电压，控制单元根据转子的旋转位置关闭开关。 为了制动旋转的转子，通过短路相位连接来产生制动电流。 相位短路在场线圈的每两相连接之间以预定的时间顺序被切换以制动转子。 对应于转子的旋转位置，相位连接被短路，使得该励磁线圈短路，由旋转转子的磁场引起的电压通过其最大值。
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