公开(公告)号：US06422338B1

公开(公告)日：2002-07-23

申请号：US09586417

申请日：2000-06-01

申请人： Johannes Menzel ,  Bernhard Dürr ,  Gerd Wöllhaf

发明人： Johannes Menzel ,  Bernhard Dürr ,  Gerd Wöllhaf

IPC分类号： F01N300

CPC分类号： F01N13/185 ,  F01N1/083 ,  F01N1/089 ,  F01N3/06 ,  F01N3/2885 ,  F01N13/002 ,  F01N2590/06

摘要： An exhaust gas muffler is provided for an internal combustion engine, especially for two-stroke engines of manually guided implements such as power chain saws, brush cutters or the like. The muffler has a housing that includes two shells. One of the shells is provided with at least one outlet opening for exhaust gas. A cover is provided that guides the exhaust gas, and the cover has at least one discharge opening for the discharge of exhaust gas to the surrounding air. An exhaust gas chamber is formed within the cover. A screen element is disposed in the vicinity of the at least one discharge opening such that the exhaust gas stream is guided through the screen element.

摘要翻译： 为内燃机提供了一种排气消声器，特别是用于诸如动力链锯，刷子等的手动导向工具的二冲程发动机。 消声器具有包括两个壳体的壳体。 其中一个壳体设置有至少一个用于废气的出口。 提供引导废气的盖，并且盖具有至少一个用于将废气排放到周围空气的排出口。 在盖内形成排气室。 屏幕元件设置在至少一个排出口附近，使得废气流被引导通过屏幕元件。

公开(公告)号：US06539911B2

公开(公告)日：2003-04-01

申请号：US09944762

申请日：2001-08-31

申请人： Bernhard Dürr ,  Harald Schliemann ,  Reinhard Friedrich ,  Manfred Rabis

发明人： Bernhard Dürr ,  Harald Schliemann ,  Reinhard Friedrich ,  Manfred Rabis

IPC分类号： F01M100

CPC分类号： F01M9/101 ,  F01M1/04 ,  F01M3/00 ,  F02B2075/027

摘要： A cam drive is provided for a valve-controlled mixture-lubricated internal combustion engine having a cylinder in which is formed a combustion chamber that is delimited by the cylinder wall, a piston and a cylinder head. Disposed in the cylinder head are poppet valves, the respective valve shafts of which are driven via a pivotable rocker arm from a valve control that includes a control cam on the surface of which rests a contact lever that transfers cam lift to one end of the rocker arm. To ensure good lubrication of the cam drive even at high speeds, the control cam is rotatably mounted in the vicinity of the cylinder wall, in which is formed a through-bore. The first open end of the through-bore is disposed in the cylinder bore at the level of the piston in its lower dead center position, while the second open end opens into the cam chamber in the vicinity of the control cam.

公开(公告)号：US06192840B1

公开(公告)日：2001-02-27

申请号：US09362227

申请日：1999-07-28

申请人： Bernhard Dürr ,  Karl-Heinz Klöpfer

发明人： Bernhard Dürr ,  Karl-Heinz Klöpfer

IPC分类号： F01P702

CPC分类号： B27B17/00 ,  F02B63/02 ,  F02B75/16

摘要： The invention relates to a drive unit of a portable handheld work apparatus such a motor-driven chain saw having an internal combustion engine. The crankshaft of the engine drives a tool of the work apparatus and a fan wheel. The fan wheel is held within a fan housing on a drive pin of the crankshaft. A crankcase is rigidly connected to a cylinder of the engine and is made of a metal material. The crankcase is configured of two parts and the axis of the crankshaft lies in the partition plane of the crankcase housing parts which can be connected to each other. A metallic chassis of the drive unit includes a crankcase sump as one of the crankcase halves and has a flange surface lying essentially perpendicularly to the crankshaft axis. The flange surface is at least defined in sections by the free-lying end of the crankcase sump. In this way, the weight and the manufacturing costs of the work apparatus are reduced. The fan housing is made of plastic and is attached to and lies against the flange surface with its housing base.

摘要翻译： 本发明涉及一种便携式手持式工作装置的驱动装置，例如具有内燃机的电动链锯。 发动机的曲轴驱动工作装置的工具和风扇轮。 风扇轮保持在曲轴的驱动销上的风扇壳内。 曲轴箱刚性地连接到发动机的气缸并由金属材料制成。 曲轴箱由两部分构成，曲轴的轴线位于曲轴箱壳体部分的分隔平面中，可以相互连接。 驱动单元的金属底盘包括作为曲轴箱半部之一的曲轴箱底槽，并且具有基本上垂直于曲轴轴线的凸缘表面。 凸缘表面至少由曲轴箱底座的自由端限定。 以这种方式，减轻了作业装置的重量和制造成本。 风扇外壳由塑料制成，并与其外壳底座相连，并与凸缘表面贴合。

公开(公告)号：US07412959B2

公开(公告)日：2008-08-19

申请号：US11168727

申请日：2005-06-28

申请人： Günter Wolf ,  Bernhard Dürr

发明人： Günter Wolf ,  Bernhard Dürr

IPC分类号： F02B75/06 ,  F02B77/04 ,  B25D17/24

CPC分类号： B27B17/0033

摘要： A manually guided implement having a housing that accommodates an internal combustion engine for driving a tool. At least an upper handle extends in a longitudinal direction of the implement on an upper side thereof. A first antivibration element connects the handle to the housing, wherein a longitudinal central axis of the antivibration element is inclined relative to a longitudinal central plane of the implement.

摘要翻译： 一种手动导向工具，其具有容纳用于驱动工具的内燃机的壳体。 至少上手柄在其上侧在工具的纵向方向上延伸。 第一防振元件将手柄连接到壳体，其中防振元件的纵向中心轴线相对于器具的纵向中心平面倾斜。

公开(公告)号：US07168132B2

公开(公告)日：2007-01-30

申请号：US10097587

申请日：2002-03-15

申请人： Bernhard Dürr ,  Michael Tinius ,  Jörg Schlossarczyk ,  Günter Wolf ,  Martin Schif ,  Werner Geyer ,  Michael März ,  Jürgen Häberlein

发明人： Bernhard Dürr ,  Michael Tinius ,  Jörg Schlossarczyk ,  Günter Wolf ,  Martin Schif ,  Werner Geyer ,  Michael März ,  Jürgen Häberlein

IPC分类号： A47B95/02

CPC分类号： B27B17/0008 ,  A47L9/322 ,  B25F5/02 ,  B25F5/026 ,  Y10T16/44 ,  Y10T16/466

摘要： The invention relates to a portable handheld work apparatus including a chain saw, a vacuum/blower apparatus or the like. The work apparatus has a handle (2) for carrying and guiding the work apparatus (1). Thumb supports (4, 5) are provided on both sides with respect to the longitudinal axis (3) of the handle (2).

摘要翻译： 本发明涉及包括链锯，真空/鼓风机装置等的便携式手持式工作装置。 工作装置具有用于承载和引导工作装置（1）的把手（2）。 拇指支撑件（4,5）相对于手柄（2）的纵向轴线（3）设置在两侧。

公开(公告)号：US06314922B1

公开(公告)日：2001-11-13

申请号：US09360107

申请日：1999-07-23

申请人： Helmut Zimmermann ,  Werner Geyer ,  Jörg Schlossarczyk ,  Hans Nickel ,  Harald Schliemann ,  Gunter Stein ,  Peter Stücke ,  Bernhard Dürr ,  Axel Klimmek

发明人： Helmut Zimmermann ,  Werner Geyer ,  Jörg Schlossarczyk ,  Hans Nickel ,  Harald Schliemann ,  Gunter Stein ,  Peter Stücke ,  Bernhard Dürr ,  Axel Klimmek

IPC分类号： F01P704

CPC分类号： F02M35/1017 ,  B25F5/008 ,  B27B17/00 ,  F02B63/02 ,  F02B2075/025 ,  F02M35/10013 ,  F02M35/10262 ,  Y02T10/146

摘要： A hand-held working tool has a housing and an internal combustion engine arranged in the housing and comprising a crankshaft and an air filter. A tool is driven by the crankshaft of the internal combustion engine. A fan housing is attached to the engine housing and has an air inlet. A fan wheel is arranged in the fan housing and is driven by the crankshaft of the internal combustion engine to supply cooling air, sucked in through the air inlet, to the internal combustion engine. The fan housing has a bottom extending radially to the crankshaft. The bottom and a side of the fan wheel facing the bottom define a chamber in the fan housing. The bottom has a combustion air outlet. A combustion air channel is connected to the combustion air outlet and to the air filter. The combustion air outlet is axially supplying combustion air from the chamber through the combustion air channel into the air filter of internal combustion engine. The fan housing has a channel wall having a bottom portion connected to the face of the bottom remote from the fan wheel and covering the bottom partially to form a double-walled bottom. The end face portion of the combustion air channel is defined by the bottom and the bottom portion of the channel wall. In an alternative embodiment the combustion air channel is provided in a hollow beam of a support that supports the drive unit of the working tool.

摘要翻译： 一种手持式工具具有壳体和布置在壳体中的内燃机，包括曲轴和空气过滤器。 工具由内燃机的曲轴驱动。 风扇壳体附接到发动机壳体并具有进气口。 风扇轴设置在风扇壳体中，并由内燃机的曲轴驱动，以将通过空气入口吸入的冷却空气供给到内燃机。 风扇壳体具有径向延伸到曲轴的底部。 风扇轮的底部和面向底部的一侧限定了风扇壳体中的室。 底部有一个燃烧空气出口。 燃烧空气通道连接到燃烧空气出口和空气过滤器。 燃烧空气出口轴向地将来自腔室的燃烧空气通过燃烧空气通道供应到内燃机的空气过滤器中。 风扇壳体具有通道壁，该通道壁的底部连接到远离风扇叶的底部的表面，并部分地覆盖底部以形成双壁底部。 燃烧空气通道的端面部分由通道壁的底部和底部限定。 在替代实施例中，燃烧空气通道设置在支撑工作工具的驱动单元的支撑件的中空梁中。

公开(公告)号：US06851403B2

公开(公告)日：2005-02-08

申请号：US09945230

申请日：2001-08-31

申请人： Bernhard Dürr ,  Bruhns Imke ,  Jürgen Häberlein ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

发明人： Bernhard Dürr ,  Bruhns Imke ,  Jürgen Häberlein ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

IPC分类号： F01L1/12 ,  F01L1/18 ,  F01L1/20 ,  F02B63/02 ,  F02B75/02 ,  F02B75/16

CPC分类号： F02B75/16 ,  F01L1/18 ,  F01L1/20 ,  F02B63/02 ,  F02B2075/027 ,  F02B2275/34

摘要： A valve drive having a rocker arm mounted on a cylinder head is provided. One end of the rocker arm is actuated by a push rod to actuate a valve stem of a poppet valve that engages the other end of the rocker arm, which is pivotably held between its ends on a support pin that extends into the cylinder head, with a spherical mounting being provided between the support pin and the rocker arm. Provided on that side of the rocker arm remote from the cylinder head is a bolt head for adjusting the bearing spacing between the rocker arm and the cylinder head for adjusting valve play. To prevent unintended adjustment of the bolt head, the latter cooperates with a rotation preventing element that has an arresting portion that engages the bolt head, and a support portion that conveys the adjustment moment away.

摘要翻译： 提供具有安装在气缸盖上的摇臂的阀驱动器。 摇臂的一端由推杆致动，以启动提升阀的阀杆，其接合摇臂的另一端，摇臂的另一端可枢转地保持在其端部之间延伸到气缸盖中的支撑销上， 在支撑销和摇臂之间设置有球面安装件。 在靠近气缸盖的摇臂的那一侧设置有用于调节摇臂和气缸盖之间的轴承间距的螺栓头，用于调节阀的游隙。 为了防止螺栓头的意外调整，后者与具有接合螺栓头的止动部分的旋转阻止元件和传递调节力矩的支撑部分配合。

公开(公告)号：US06736240B2

公开(公告)日：2004-05-18

申请号：US09944764

申请日：2001-08-31

申请人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis ,  Jörg Schlossarczyk

发明人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis ,  Jörg Schlossarczyk

IPC分类号： F01M100

CPC分类号： F01M9/10 ,  F01M3/00

摘要： A cam drive is provided for a valve control of a mixture-lubricated internal combustion engine that has a cylinder, and a cylinder head in which is disposed a poppet valve which is actuated by a pivotable rocker arm. Mounted in a cam chamber is a control cam that is driven by the crankshaft of the engine and on the cam path of which rests a drag lever that transfers the cam lift to the rocker arm. To achieve a reliable mixture lubrication, a flow guidance element is disposed in the annular chamber between the peripheral wall of the cam chamber and the maximum diameter of the path of a cam nose. The flow guidance element is provided with a flow edge that is disposed adjacent to the drag lever in the vicinity of the path diameter of the cam nose.

摘要翻译： 提供一种凸轮驱动器，用于具有气缸的混合物润滑的内燃机的阀控制，以及气缸盖，其中设置有由可枢转的摇臂驱动的提升阀。 安装在凸轮室中的是由发动机的曲轴驱动的控制凸轮，并且在其凸轮路径上设有将凸轮升程转移到摇臂的牵引杆。 为了实现可靠的混合润滑，流动引导元件设置在凸轮室的周壁和凸轮鼻的路径的最大直径之间的环形室中。 流动引导元件设置有在靠近凸轮鼻的路径直径附近设置在牵引杆附近的流动边缘。

公开(公告)号：US06715212B2

公开(公告)日：2004-04-06

申请号：US10162906

申请日：2002-06-06

申请人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

发明人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

IPC分类号： F01P102

CPC分类号： F02M35/1017 ,  B27B17/08 ,  F02B63/02 ,  F02B75/16 ,  F02B2075/027 ,  F02M35/024

摘要： A portable handheld work apparatus such as a motor-driven chain saw includes a housing (6) of a drive unit (2). The following are mounted in the housing (6): an internal combustion engine (3), a carburetor (4) for fuel metering and an air filter (5) as well as a fuel tank (8). The air filter (5) is mounted ahead of the carburetor in the flow direction of the fresh air flow. A largest possible filter action is obtained with a compact configuration in that a housing (10) of the air filter (5) lies at least partially in a space between the carburetor (4) and the fuel tank (8).

摘要翻译： 诸如电动链锯的便携式手持式工作装置包括驱动单元（2）的壳体（6）。 以下安装在壳体（6）中：内燃机（3），用于燃料计量的化油器（4）和空气过滤器（5）以及燃料箱（8）。 空气过滤器（5）在新鲜空气流的流动方向上安装在化油器的前面。 通过紧凑的结构获得最大可能的过滤作用，其中空气过滤器（5）的壳体（10）至少部分位于化油器（4）和燃料箱（8）之间的空间中。

公开(公告)号：US06375171B1

公开(公告)日：2002-04-23

申请号：US09658132

申请日：2000-09-08

申请人： Helmut Zimmermann ,  Horst Otterbach ,  Bernhard Dürr ,  Manfred Rabis ,  Karl-Heinz Klöpfer ,  Klaus Martin Uhl ,  Günter Wolf ,  Rebekka Helfen

发明人： Helmut Zimmermann ,  Horst Otterbach ,  Bernhard Dürr ,  Manfred Rabis ,  Karl-Heinz Klöpfer ,  Klaus Martin Uhl ,  Günter Wolf ,  Rebekka Helfen

IPC分类号： F16M100

CPC分类号： B25F5/006 ,  B27B17/0033 ,  F16F1/12 ,  F16F1/122 ,  F16F15/067

摘要： The invention relates to a vibration damper between a housing (4), which holds an internal combustion engine, and a handle (3) fixed on the housing (4). The handle (3) is for holding and guiding the motor-driven chain saw (2) during use thereof. The vibration damper (1) is a coil spring (5) which is fixed at a first end (10) thereof with an attachment element (7) to the handle (3) and, at a second end (20), the coil spring is fixed with a further attachment element (30) to the housing. A part turn of the end (10, 20) of the coil spring (5) is held form-tightly to the attachment element (7, 30) in the direction of its longitudinal center axis (25). To provide a torsion-free assembly of the coil spring, it is provided that the coil spring (5) can be assembled from one of its ends (20) between the handle (3) and the housing (4) and be secured at least at one of its ends (20) to the attachment element (30) against a rotational movement in the peripheral direction.

摘要翻译： 本发明涉及一种在保持内燃机的壳体（4）和固定在壳体（4）上的手柄（3）之间的减振器。 手柄（3）用于在使用时保持和引导电动链锯（2）。 减震器（1）是螺旋弹簧（5），其在其第一端（10）处固定有与把手（3）相连的附接元件（7），并且在第二端（20）处，螺旋弹簧 被固定有另外的附接元件（30）到壳体。 螺旋弹簧（5）的端部（10,20）的一部分转动沿其纵向中心轴线（25）的方向紧密地保持在附接元件（7,30）上。 为了提供螺旋弹簧的无扭转组件，设置螺旋弹簧（5）可以从手柄（3）和壳体（4）之间的端部（20）之一组装并且至少被固定 在其一个端部（20）处连接到附接元件（30），以防止在周向方向上的旋转运动。