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：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：US06393835B1

公开(公告)日：2002-05-28

申请号：US09762048

申请日：2001-04-06

申请人： Gerhard Stoll ,  Wolf Burger ,  Gustav Wölpert ,  Thomas Rieger ,  Ronald Hotz ,  Bernhard Dürr

发明人： Gerhard Stoll ,  Wolf Burger ,  Gustav Wölpert ,  Thomas Rieger ,  Ronald Hotz ,  Bernhard Dürr

IPC分类号： F01N310

CPC分类号： F01N13/002 ,  F01N3/06 ,  F01N3/2053 ,  F01N3/2885 ,  F01N13/1894 ,  F01N2450/20 ,  F01N2450/24 ,  F01N2470/04 ,  F01N2470/06 ,  F01N2470/10 ,  F01N2490/08 ,  F01N2590/06 ,  F02B63/02 ,  F02B2075/025 ,  F02B2075/027

摘要： The invention relates to an exhaust-gas muffler on an internal combustion engine in a motor chain saw. The exhaust-gas muffler includes a housing (1) which is assembled of two housing shells (2, 3). The one housing shell (2) has an exhaust-gas inlet (4) and the other housing shell (3) has an exhaust-gas outlet (5). An inner wall (8) as well as a catalytic converting element (7) are provided in the inner space (6) of the muffler housing (1). The catalytic converting element (7) is mounted between the exhaust-gas inlet (4) and the exhaust-gas outlet (5). In order to ensure an adequate catalytic converting treatment of the exhaust gas at low gas counterpressure, it is provided to divide the entering exhaust-gas flow (10) and to conduct at least one of these component flows (23) in contact with the catalytic converting element (7). The component flows (22, 23) are brought together and mixed with other before exiting from the muffler housing (1).

摘要翻译： 本发明涉及一种电动链锯内燃机上的排气消声器。 排气消声器包括由两个壳体（2,3）组装的壳体（1）。 一个壳体（2）具有废气入口（4），另一个壳体（3）具有废气出口（5）。 在消声器壳体（1）的内部空间（6）中设置内壁（8）以及催化转化元件（7）。 催化转化元件（7）安装在废气入口（4）和废气出口（5）之间。 为了确保在低气体反压下对废气进行适当的催化转化处理，提供了对进入的废气流（10）进行分割，并且使这些组分流（23）中的至少一个与催化剂接触 转换元件（7）。 在从消声器壳体（1）离开之前，将部件流动（22,23）与其它流体（22,23）混合在一起。

公开(公告)号：US06363618B1

公开(公告)日：2002-04-02

申请号：US09518714

申请日：2000-03-03

申请人： Bernhard Dürr

发明人： Bernhard Dürr

IPC分类号： F02F700

CPC分类号： F02B63/02 ,  F02F7/0085 ,  F05C2225/08

摘要： A manually guided, portable implement, especially a power saw, is provided. The implement has a cylinder and a crankshaft that is connected to a piston via a piston rod. The implement has an essentially plastic housing as well as a lower crankcase. A stabilizing plate is nearly entirely embedded in the material of the lower crankcase. The one-piece stabilizing plate is provided with support sockets for bolting the lower crankcase to the cylinder. An overall metallic screw connection can thus be established.

摘要翻译： 提供了一种手动导向的便携式工具，特别是电动锯。 工具具有通过活塞杆连接到活塞的气缸和曲轴。 该工具具有基本上塑料的外壳以及下部的曲轴箱。 稳定板几乎完全嵌入在下曲轴箱的材料中。 一体式稳定板设有用于将下曲轴箱螺栓连接到气缸的支撑插座。 因此可以建立整体的金属螺丝连接。