Andreas Stihl Ag Co. Kg

Helmut Schlessmann

Werner Geyer

Johannes Menzel

Günter Wolf

Reinhard Friedrich

Oliver Gerstenberger

Michael Joos

Ralf Blechschmidt

Andreas Guip

Olaf Schmidt

Mark Reichler

Jens Kern

Robert Köhli

Ralf-Rainer Kemmler

Evelyn Kullik

Harald Decker

Christoph V Hiller

Guilherme Pizzato Sieben

A closure cap for an operating medium tank is provided with a closure device projecting into a fill socket of the operating medium tank. The closure device has a first cap element, a second cap element, and a sealing ring arranged between the first and second cap elements. A lifting assembly axially moves by an axial travel the first and second cap elements relative to each other for opening and closing the fill socket. The lifting assembly has a pressure member acting axially on one of the first and second cap elements. A grip member is provided that is rotatable about a hub and actuates the lifting assembly. A cover disk covering at least partially the fill socket relative to an exterior is connected fixedly to the pressure member of the lifting assembly. The cover disk rotates, together with the pressure member, about the hub.

Closure cap for an operating medium tank

An engine has a cylinder wherein a reciprocating piston is mounted. The piston drives, via a connecting rod (), a crankshaft () pivotably mounted in a crankcase. The connecting rod is connected to the piston via a piston pin. An inlet window for combustion air is provided and controlled by the piston. The piston separates a combustion chamber from the crankcase interior space and has a piston base the underside of which is oriented toward the crankcase. To achieve good cooling of the piston and of the piston pin bearing, a first flow-guide element is provided within the crankcase interior space adjacent to the inlet window. The first flow-guide element redirects the combustion air flowing in through the inlet window in the direction of the underside of the piston base.

Two-stroke engine

An internal combustion engine of a manually operated implement, having an elastic connecting duct between the engine and an air filter for vibration-decoupled bridging of a vibration gap between engine and the air filter. The elastic connecting duct has a first conduit for fuel/air mixture and a second conduit for largely fuel-free air. The first and second conduits are separate tubes having respective bores that are separated from one another over their entire lengths, the inlet of the engine is operatively connected to the air filter via the first conduit, and an air duct window of the engine is operatively connected to the air filter via the second conduit.

Internal combustion engine having an elastic connecting duct

The invention is directed to an exhaust-gas muffler () of a handheld work apparatus driven by an internal combustion engine. The exhaust-gas muffler () includes a muffler housing () which includes an engine-end wall () having an inlet window () as well as an outlet (). Attachment means () for fixing the exhaust-gas muffler () on the internal combustion engine are provided on the engine-end wall () in the region of the inlet window (). The engine-end wall () is provided with a reinforcing sheet metal piece () on the inner side of the exhaust-gas muffler () in the region of the attachment device (). A discharge channel (), which leads to the outlet (), is formed at least between a part region of the reinforcing sheet metal piece () and the adjoining region of the muffler housing ().

Exhaust-gas muffler

A tubular handle for a manually guided implement, especially a power chain saw or the like, is provided. The handle has an essentially circular cross-section and at least one mounting portion for fixing the handle to the implement. In the area of the mounting portion, the circular cross-section is flattened to form an at least approximately planar abutment portion, beyond which a circular cross-sectional portion is retained. The abutment portion is provided for fixing the tubular handle to the implement.

Tubular handle for a manually guided implement

The invention relates to an attachment pin () for fixing an exhaust-gas muffler () in an apparatus part () of a portable handheld work apparatus () driven by an internal combustion engine. The exhaust-gas muffler () includes especially an exhaust-gas catalytic converter (). An at least partially exposed region () is provided with a cooling surface () and is on the attachment pin () between the exhaust-gas muffler () and the apparatus part ().

Attachment pin for an exhaust-gas muffler

Growing community of inventors

Prüm, Germany

Helmut Schlessmann