Andreas Stihl Ag Co. Kg

Andreas Stihl Ag & Co.

Markus Keller

Johannes Menzel

Helmut Lux

Helmut Zimmermann

Günter Wolf

Jörg Schlossarczyk

Roland Adam

Reinhard Friedrich

Stefan Kummermehr

Andreas Guip

Christoph Von Hiller

Jens Knauβ

Jens Kern

Ralf-Rainer Kemmler

Uwe Janoske

J&uuml;rgen Steinmaier

Heiko Pinkawa

A hand-held power tool has at least one operating medium tank having at least one opening. At least one connecting conduit is arranged external to the operating medium tank. At least one connecting member is inserted into the opening, wherein the at least one connecting conduit is connected to the at least one connecting member. Securing devices that secure a rotational position of the at least one connecting member in the opening are provided.

Hand-held power tool

A starter device () for an internal combustion engine has a starter drum () which acts upon a spring housing () when starting. An intermediate spring () is arranged in the spring housing (). One end of the intermediate spring () is fixed to the spring housing () and the other end of the intermediate spring () can be coupled to the crankshaft () of the engine via a first catch (). The spring housing () and the starter drum () are journalled on a shaft () held at one end. The center of gravity (S) of the spring housing () lies in the region of the support of the spring housing () in order to reduce the acting bearing forces and to increase the service life of the starter device.

Starter device for an internal combustion engine

An antivibration device is mounted between a motor unit () having an internal combustion engine () and a vibration-insulated unit () of a portable handheld work apparatus () such as a motor-driven chain saw, cutoff machine, suction/blower apparatus or the like. The antivibration device () includes a vibration damper () made of foamed elastic material ().

Antivibration device

A muffler arrangement includes an exhaust-gas muffler, which is subdivided into an inlet space and an outlet space. An exhaust-gas stub of an internal combustion engine opens into the inlet space. Exhaust gas is conducted from the outlet space into an air channel via an exhaust-gas outlet. The air channel is formed between the housing of the exhaust-gas muffler and an outer cover and extends along a side of the exhaust-gas muffler. A cooling-air component flow is branched from a cooling-air flow of a cooling-air blower and enters at a first end of the air channel. The cooling-air component flow exits again at the second end of the air channel. In order to reduce the discharge temperature of the exhaust gas (especially with the arrangement of a catalytic converter), it is provided that the exhaust-gas jet is conducted in the air channel in spaced relationship to the air channel walls and is essentially surrounded on its path to the air channel outlet window by the supplied cooling-air component flow so that the exhaust-gas jet forms a core flow and the cooling-air component flow forms a cover flow surrounding the core flow.

Muffler arrangement for an internal combustion engine

A portable work apparatus, especially a motor-driven chain saw ( ), has a drive unit which is provided with a handle housing ( ). The handle housing ( ) includes an extension ( ) which extends in the longitudinal direction of the work apparatus from a rearward handle ( ) on the side facing away in the longitudinal direction from a guide bar ( ) forward to the side facing toward the guide bar ( ). The handle housing ( ) is connected via antivibration elements to the drive unit. The work apparatus has a forward handle tube ( ), which extends over the work apparatus transversely to the longitudinal direction and is attached with an end ( ) to the free end of the extension ( ) and with the other end ( ) in the area of the rearward handle ( ). At least one of the ends ( ) of the handle tube ( ) is fixed via an antivibration element ( ).

Portable work apparatus

Growing community of inventors

Leutenbach, Germany

Markus Keller