Abstract: A portable blower having a motor unit that includes a drive motor disposed in an engine housing. The blower has a blower unit that is provided with a blower housing that is separate from the engine housing. The blower unit includes an axial fan that is driven by the drive motor via a drive shaft. During operation the axial fan conveys operating air in the direction of the axis of rotation of the axial fan through a blower tube disposed downstream of the axial fan. An ergonomic operation and a good operating result can be achieved if the motor unit includes a guide tube on which is secured at least one handle. The engine housing is disposed at one end of the guide tube and the blower unit is disposed at the other end of the guide tube. The drive shaft extends through the guide tube. The length of the guide tube between the engine housing and the blower unit corresponds to at least half of the length of the blower tube.

Abstract: A hand-guided portable vacuum/blower device has a blower unit with a blower and a motor unit with a drive motor. The blower unit is rigidly connected to the motor unit. The drive motor is drivingly connected to the blower. A grip part is connected with antivibration elements to the motor unit and the blower unit. The grip part is at least approximately ring-shaped and has a first handle. The grip part is arranged in a plane that is positioned perpendicularly to an axis of rotation of the blower and, when viewed in the direction of the axis of rotation, is located between the motor unit and the blower unit.

Abstract: A portable handheld apparatus such as a brushcutter, blower or the like has a drive motor and a throttle lever (2). The throttle lever (2) is pivotally journalled about a rotational axis (3). The throttle lever (2) acts on an actuating device for controlling the drive motor. In order to make possible a simple adjustment of the actuating device, it is provided that the throttle lever (2) has an operator-controlled lever (6) and an actuating lever (5). The operator-controlled lever (6) can be actuated by the operator. The actuating lever (5) acts on the actuating device. The relative position of the actuating lever (5) relative to the operator-controlled lever (6) is adjustable.

Abstract: A portable blower having a motor unit that includes a drive motor disposed in an engine housing. The blower has a blower unit that is provided with a blower housing that is separate from the engine housing. The blower unit includes an axial fan that is driven by the drive motor via a drive shaft. During operation the axial fan conveys operating air in the direction of the axis of rotation of the axial fan through a blower tube disposed downstream of the axial fan. An ergonomic operation and a good operating result can be achieved if the motor unit includes a guide tube on which is secured at least one handle. The engine housing is disposed at one end of the guide tube and the blower unit is disposed at the other end of the guide tube. The drive shaft extends through the guide tube. The length of the guide tube between the engine housing and the blower unit corresponds to at least half of the length of the blower tube.

Abstract: A hand-held power tool has a housing and a drive motor arranged in the housing. A blower wheel is provided, wherein the housing has at least one area provided with openings allowing passage of air conveyed by the blower wheel. A protective device is arranged on an exterior wall of the housing, wherein the protective device has a damping area and the damping area protects the housing in the area provided with the openings from mechanical impact loads.

Abstract: A blower unit for a portable blower, having a drive shaft that is rotatably driven by a drive motor. Disposed in the blower unit is an axial fan that is provided with at least one fan wheel driven by the drive shaft and at least guide wheel fixedly disposed in the housing. To achieve a simple construction and a simple manufacture, the housing has at least two housing sections and is divided approximately parallel to the axis of rotation of the drive shaft.

Abstract: A hand-guided power tool has a housing having a first housing part and a second housing part. A grip unit has at least one handle for guiding the power tool and forms the first housing part. A motor unit is arranged in the second housing part and has a drive motor. The grip unit and the motor unit are connected to one another by at least one antivibration element. The at least one antivibration element has a first end secured to the first housing part and a second end secured to the second housing part. The first housing part has at least one receptacle extending from an exterior of the first housing part into a housing interior of the housing. The at least one antivibration element has a longitudinal extension and is surrounded over at least a portion of the longitudinal extension by the at least one receptacle.

Abstract: A two-cycle engine in a portable, manually-guided implement, such as a power chain saw, a cut-off machine, a brush cutter, or the like, is provided. The cylinder has a combustion chamber that is delimited by a reciprocating piston that via a connecting rod drives a crankshaft that is mounted in a crankcase so as to be rotatable about a crankshaft axis. The cylinder has an outlet for conveying exhaust gases out of the combustion chamber, with the outlet having an axis of the channel thereof. The cylinder also has an inlet for supplying a fuel/air mixture to the crankcase. By means of at least two transfer channels, the fuel/air mixture is conveyed out of the crankcase and into the combustion chamber, with the transfer channels being disposed symmetrically relative to the axis of the channel of the outlet.

Abstract: A hand-guided portable vacuum/blower device has a blower unit with a blower and a motor unit with a drive motor. The blower unit is rigidly connected to the motor unit. The drive motor is drivingly connected to the blower. A grip part is connected with antivibration elements to the motor unit and the blower unit. The grip part is at least approximately ring-shaped and has a first handle. The grip part is arranged in a plane that is positioned perpendicularly to an axis of rotation of the blower and, when viewed in the direction of the axis of rotation, is located between the motor unit and the blower unit.

Abstract: A portable handheld suction/blower apparatus includes a motor-driven blower (1) and at least one air guide tube (3) connected to the blower (1) at a connecting location (2) to conduct flow. The connecting location (2) is configured at least as a double-winding connection (9) which has pairs of outer thread sections (4) of an outer winding (5) and inner thread sections (7) of an inner winding (8). The pairs are distributed about the periphery of the threaded connection. The periphery of the connecting location (2) is subdivided by the number of pairs of thread sections (4, 7) into a corresponding number of angle segments (10). The sum of angle extents (?, ?) of a pair of individual thread sections (4, 7) is in total less than an angle extent (?) of the corresponding angle segment (10).

Abstract: An arrangement for decanting liquids includes a tubular-shaped support (1) having a flow channel (2). The flow channel (2) is blocked by a valve plate (3) which is coupled via axial connecting elements (4, 4?) to the relative movement of an inner sleeve (5) and an outer sleeve (6) of the support (1). The outer sleeve (6) lies in overlapment and the axial connecting elements (4, 4?) extend into the interior of the support. The valve plate (3) can be lifted from its valve seat against a spring force engaging at the inner sleeve (5) and at the outer sleeve (6). A radial flange collar (13) is formed on the outer sleeve (6). To ensure an accurate metering at the highest possible volume flow of the discharged liquid at low manufacturing costs, the valve plate (3) is mounted at a free end (9) of the support (1) and the axial connecting elements are configured as tension rods (4, 4?) and are arranged next to an edge of the valve plate (3).

Abstract: A portable handheld work apparatus such as a blower or brushcutter or the like has an actuating device for controlling the drive motor of the work apparatus. A throttle lever (2) is provided which acts on the actuating device. A fixing device (35) is provided for the throttle lever (2). In order to obtain a simple, reliable fixing of the throttle lever (2), the fixing device (35) includes blocking elements which fix the throttle lever (2) in a latching position (21) of the fixing device (35) in at least one pregiven position and which enable the throttle lever (2) in the operation-disabled position (20) of the fixing device (35).

Abstract: 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.

Abstract: A portable handheld apparatus such as a brushcutter, blower or the like has a drive motor and a throttle lever (2). The throttle lever (2) is pivotally journalled about a rotational axis (3). The throttle lever (2) acts on an actuating device for controlling the drive motor. In order to make possible a simple adjustment of the actuating device, it is provided that the throttle lever (2) has an operator-controlled lever (6) and an actuating lever (5). The operator-controlled lever (6) can be actuated by the operator. The actuating lever (5) acts on the actuating device. The relative position of the actuating lever (5) relative to the operator-controlled lever (6) is adjustable.

Abstract: A portable handheld work apparatus such as a blower or brushcutter or the like has an actuating device for controlling the drive motor of the work apparatus. A throttle lever (2) is provided which acts on the actuating device. A fixing device (35) is provided for the throttle lever (2). In order to obtain a simple, reliable fixing of the throttle lever (2), the fixing device (35) includes blocking elements which fix the throttle lever (2) in a latching position (21) of the fixing device (35) in at least one pregiven position and which enable the throttle lever (2) in the operation-disabled position (20) of the fixing device (35).

Abstract: A method is provided for producing a crank arm for a crankshaft of an internal combustion engine, wherein the crankshaft is composed of separately produced parts. The crank arm is stamped out of a semifinished part and has a central recess for receiving a shaft journal of the crankshaft, and has an eccentrically disposed recess for receiving a crankshaft pin. A peripheral contour of the stamped part delimits a flywheel member of the crank arm. A recessed surface portion is formed or stamped in the crank arm in an area surrounding the central recess.

Abstract: 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.

Abstract: 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).

Abstract: An arrangement for decanting liquids includes a tubular-shaped support (1) having a flow channel (2). The flow channel (2) is blocked by a valve plate (3) which is coupled via axial connecting elements (4, 4′) to the relative movement of an inner sleeve (5) and an outer sleeve (6) of the support (1). The outer sleeve (6) lies in overlapment and the axial connecting elements (4, 4′) extend into the interior of the support. The valve plate (3) can be lifted from its valve seat against a spring force engaging at the inner sleeve (5) and at the outer sleeve (6). A radial flange collar (13) is formed on the outer sleeve (6). To ensure an accurate metering at the highest possible volume flow of the discharged liquid at low manufacturing costs, the valve plate (3) is mounted at a free end (9) of the support (1) and the axial connecting elements are configured as tension rods (4, 4′) and are arranged next to an edge of the valve plate (3).

Abstract: A carburetor arrangement for an internal combustion engine including a two-stroke engine in a portable handheld work apparatus includes an intake channel section (2) which is formed in the carburetor housing (34). A throttle flap (3) is arranged in the intake channel section and is rotatably held by a throttle flap shaft (4). Fuel-conducting channels open into the intake channel section (2) in the region of the throttle flap. A choke flap (5) is mounted upstream of the throttle flap (3) in the intake channel section (2). The choke flap (5) is held by a choke shaft (6) so as to be rotatable. The throttle flap (3) is displaced in a closing direction from an opening position into a closed position and in an opening direction from the closed position into the open position. The same applies to the choke flap (5). The choke flap (5) and the throttle flap (3) are mechanically coupled. The choke shaft (6) is actuable by an operator-controlled element.