Andreas Stihl Ag Co. Kg

Andreas Stihl Ag & Co.

Goldhofer Ag

W. Zimmermann Gmbh & Co. Kg

Georg Maier

Wolfgang Layher

Heinrich Leufen

Eberhard Schieber

Fritz Kiesewetter

Harald Mang

Uwe Gaese

Thomas Lux

Philipp Neumann

Mohamed Abou-Aly

G&uuml;nter Wolf

Arno Kinnen

Felix Mayer

Andreas Bähner

Ralf Tuckermann

Michael Schneider

Patrick Levien

Daniel Herbst

Markus Zwimpfer

Martin Benholz

Franz Mandl

Thomas Frei

Alexander Erkert

Alexander Klein

Klaus-Martin Uhl

Heiko Rosskamp

Volker Reber

Jörg Schlossarczyk

Claus Naegele

Maximilian Eberhardt

Klaus Langhans

Friedrich Hollmeier

Axel Klimmek

Tommy Roitsch

Ernst Gorenflo

Sebastian Hanussek

Tim Gegg

Tobias Deigendesch

Andreas Lingen

Lukas Zürcher

Rolf Walter

Heiko Roβkamp

Martin Rieber

Horst Häfele

Erik Andresen

Stanislaw Cichon

Rebekka Helfen

Jens Peter Ramler

Andreas B&auml;hner

Thomas Neumaier

Dirk Schweinberger

Ina Weimer

Hiroyuki Oka

Frank Berbig

Hideki Watanabe

Tobias Grams

Tobias Flämig-Vetter

Simon Steinmayer

Bertil Stapel

Martin Völk

Norbert Althoff

Marcus Saak

Helmut Visel

Dieter Bächle

Robert Nusko

Andreas Krups

Mario Haefele

Uwe Theimer

Jens Reimer

Marc Mildner

Christine Halle

Christine Hallé

Rolf Erhardt

Jochen Keinath

Sebastian Gembardt

Michael Hermann

Marco Deuchert

Leo Kieβling

Takumi Nonaka

Herbert Swoboda

Jürgen Redecker

Adi Parzl

Sebastian HANUßEK

A saw chain includes connecting links and drive links that are mutually connected by rivets in an articulated manner about rivet axes. The rivets project through at least one rivet opening of one connecting link and through a rivet opening of a drive link. At least one rivet has, on one end face thereof, a depression having a depression edge and a depression base surrounded by the depression edge. The distance of the depression edge from a central plane of the saw chain increases at an increasing radial distance from the rivet axis. The distance (e) of the base from the central plane does not increase at any point of the base at an increasing radial distance from the rivet axis. A greatest distance (a) of the base from the rivet axis corresponds to 50% to 100% of half the core diameter (d) of the rivet.

Saw chain

A plug connector for electrically connecting a tag connector to an electrical line of a motor-driven garden and/or forestry working apparatus includes a tag connector receptacle portion and a line receptacle portion. The tag connector receptacle portion has a first surface-clamping leg, a second surface-clamping leg, a first peripheral guiding blade and a second peripheral guiding blade, wherein the surface-clamping legs are disposed so as to be opposite one another and wherein the peripheral guiding blades are disposed so as to be opposite one another. The tag connector receptacle portion is configured for elastically enlarging a leg spacing between the surface-clamping legs and for plastically enlarging a blade spacing between the peripheral guiding blades by interaction between the peripheral guiding blades and the tag connector for receiving the tag connector and for contacting and for impinging with a clamping force opposite surfaces of the received tag connector by the surface-clamping legs, and for contacting opposite peripheries of the received tag connector by the peripheral guiding blades for securing the received tag connector against being released from the tag connector receptacle portion and for electrical contacting. The line receptacle portion is electrically connected to the tag connector receptacle portion. The line receptacle portion is configured for receiving the electrical line and for securing the received line against being released from the line receptacle portion and for electrical contacting.

Plug connector for electrically connecting a tag connector to an electrical line of a motor-driven garden and/or forestry working apparatus, and motor-driven garden and/or forestry working apparatus

The invention relates to an axle assembly of a heavy goods vehicle, comprising a pivot bearing steering rotational axis (X), a wheel support comprising at least one wheel that is mounted thereon so as to be rotatable about a wheel rotational axis (Z), the wheel rotational axis (Z) being arranged behind the steering rotational axis (X), in the travel direction (V), in every deflection state of the axle assembly, during straight travel, and a unit that is adjustable about the steering rotational axis (X) when the wheel support is rotated, the adjustable unit being adjustable between two operating states, specifically a forwards travel operating state in which it damps the rotational movement of the wheel support about the steering rotational axis (X), and a reverse travel operating state in which it introduces a steering force, which steers the axle assembly, into the axle assembly.

Axle assembly for a heavy goods vehicle, heavy goods vehicle comprising at least one axle assembly of this kind, and hydraulic arrangement, in particular for adjusting an adjustable unit that is formed as a cylinder-piston arrangement

The disclosure relates to a file for filing a saw tooth of a saw chain. The file includes a file body defining a circumferential direction and a circumference. The file body, in a cross section, has an unhewn guide surface and a file surface adjoining the unhewn guide surface in the circumferential direction. The unhewn guide surface extends over at least &#x2159; of the circumference in the cross section.

File for filing the cutting tooth of a saw chain

A handheld work apparatus has a tool and a brake assembly for the tool. The brake assembly has an actuating element which acts on a brake element of the brake assembly. The actuating element is movable between a fixed position wherein the tool is not braked, and a released position, wherein the brake element brakes the tool. To fix the actuating element in the fixed position, an electromagnet is provided. The electromagnet interacts with an anchor on the actuating element. The anchor is mounted via a pivot joint on an anchor pin to be pivotable about a pivot axis. A guide includes a guide part connected to the anchor and a guide part connected to the yoke, wherein, in the fixed position of the actuating element, the guide parts guide the anchor relative to the yoke in a transverse direction of an outrigger of the apparatus.

Handheld work apparatus having a work tool and a brake assembly for the work tool

An electromagnetic valve has a valve chamber which has an inflow opening for supplying a liquid and an outlet for discharging the liquid. The valve includes a valve seat and a valve member that is assigned to the valve seat. The fluidic connection between the inflow opening and the outlet of the valve is interrupted when a valve seat is closed by the valve member. The valve member is held on an armature plate which is moved by an electromagnetic drive unit toward an end stop which is formed by a first stop surface. In order for the operative capability of the valve to be guaranteed in the case of wear on the end stop, the armature plate is assigned a second stop surface which upon a predefined wear on the first stop surface forms a downstream end stop.

Electromagnetic valve

The invention relates to an ignition device for triggering an ignition spark at a spark plug by way of an ignition generator. The latter includes a magnet wheel, which has two permanent magnets arranged at a spacing from each other in the peripheral direction and a magnetic yoke. The magnetic yoke carries a charging coil which charges an ignition capacitor, a primary coil and a secondary coil connected to the spark plug. During every passing of a permanent magnet, a voltage is induced in the coils, wherein, in order to trigger the ignition spark, the ignition capacitor is discharged via a switch element. In order to avoid an unwanted ignition at the bottom dead center of the piston, a device for reducing the voltage that occurs at the spark plug is provided.

Ignition device for a two-stroke engine

An electromagnetic fuel valve has a valve chamber, a valve element and a valve seat assigned to the valve element. The valve chamber is delimited by an electromagnetic drive which moves the valve element relative to the valve seat. The drive includes a receiving housing for a coil carrier with an electrical coil. A magnet core is inserted into the coil carrier and has an end section facing the valve element. At an open sealing end facing toward the valve chamber, a sealing element is arranged between the end section of the magnet core and the receiving housing. To achieve good sealing, that end section of the magnet core situated in the sealing element expands the sealing element and compresses the material thereof radially against the edge of the sealing end of the receiving housing to seal the valve chamber to the interior space of the receiving housing.

Electromagnetic fuel valve

The invention relates to a heavy-duty trailer () in which at least one of the wheels () has a MacPherson independent wheel suspension (). The wheel () can be a steered wheel, wherein the steering cylinders () of the steering device () enclose an angle (a) with the longitudinal direction (L) of the trailer. The transverse control arms () can also be articulated onto the trailer frame at least in the longitudinal center plane (E) of the trailer ().

Heavy-duty trailer with MacPherson independent wheel suspension

A handheld work apparatus has a combustion engine which drives a tool of the work apparatus via a centrifugal clutch. The centrifugal clutch couples in an engagement rotational speed range (n) which extends between a lower engagement rotational speed (n) and an upper engagement rotational speed (n). The engine has a fuel supply device, an ignition device, a control device and a device for detecting the rotational speed (n) of the engine. A method for operating the handheld work apparatus makes provision for the rotational speed profile of the combustion engine to be monitored in the engagement rotational speed range (n) and for the power (P) output for driving the tool to be increased from an operating power (P) to an increased power (P, P) when the rotational speed profile corresponds with a predetermined rotational speed profile over a predetermined period of time (&#x394;t).

Method for operating a handheld work apparatus having a combustion engine

In a power tool, an internal combustion engine is coupled by a clutch to a tool member. An ignition control device is provided that for each engine speed of the internal combustion engine specifies at least one ignition timing. For each engine speed of a first engine speed range a correlated first ignition timing is specified, wherein each first ignition timing is an ignition timing of a first ignition timing range. For each engine speed of a second engine speed range, adjoining the first engine speed range, a correlated second ignition timing is specified, wherein each second ignition timing is an ignition timing of a second ignition timing range. The first ignition timing is retarded by at least 5&#xb0; crank angle relative to the second ignition timing. The first engine speed range extends at least from the coupling engine speed range to the limit engine speed of approximately 7,000 RPM.

Method for operating an internal combustion engine of a hand-guided power tool

The invention relates to a portable hand-guided work apparatus having an internal combustion engine () for driving a work tool (). A combustion chamber () is formed in a cylinder () of the engine () and is delimited by a piston () which drives a crankshaft () in rotation. A spark plug () is held in the cylinder () and is driven by an ignition module () to ignite a compressed air/fuel mixture in the combustion chamber () to drive the piston (). A short circuit line () is provided on the ignition module () for switching off the ignition. The short circuit line () is configured as a bus line () in order to make available, in a simple manner, a plurality of further operating parameters to the ignition module. An external control apparatus () and/or sensors () are connected to the bus line (). The ignition module (), as master, controls data traffic on the bus line () and permits a data communication on the bus line () only when a minimum crankshaft angular distance (A, B) is present at an ignition time point (Z, Z) of the ignition module ().

Ignition module having a bus line

A spark plug socket has an elastic base member and a contact element secured in the base member. The base member has a spark plug receptacle for a spark plug and the contact element has a contact receptacle for a terminal of the spark plug. The spark plug socket is removable in a removing direction from the spark plug. In an unloaded state of the spark plug socket arranged on the spark plug, a section of the contact receptacle engages behind the terminal of the spark plug in the removing direction of the spark plug socket. A longitudinal center axis of the contact receptacle is slanted relative to a longitudinal center axis of the spark plug receptacle. The contact element is adjustable against an elasticity of the base member such that an angle between the longitudinal center axis of the contact receptacle and the longitudinal center axis of the spark plug receptacle is reduced.

Spark plug socket

An exhaust gas muffler for an internal combustion engine, especially the engine of a manually-guided implement such as a power saw, a cut-off machine, or the like. The muffler has a housing having an inlet for exhaust gases and an outlet out of the housing. The housing has an outer wall over which the exhaust gases from the outlet flow. To achieve an adequate cooling of the exhaust gas muffler and the discharging exhaust gases, the exhaust gases out of the outlet draw in atmospheric air between the exhaust gases and the outer wall of the housing.

Exhaust gas muffler

Growing community of inventors

Kernen, Germany

Georg Maier