Andreas Stihl Ag Co. Kg

Andreas Stihl Ag & Co.

Ralf Blechschmidt

Johannes Menzel

Jörg Schlossarczyk

Friedrich Hollmeier

Igor Klaric

Andreas Bähner

Konrad Knaus

Peter Pretzsch

Philipp Neumann

Helmut Schlessmann

Andreas Schulz

Erik Andresen

Matthias Hehnke

Claus-Peter Hamisch

Tobias Wurster

Matthias Harer

Guilherme Pizzato Sieben

Christian Brüning

Rolf Sattelmaier

Jörg Jacubzig

A work apparatus has a first and a second assembly. The second assembly is mounted movably in relation to the first assembly via at least one antivibration element. Formed between the first assembly and the second assembly is a vibration gap, which is bridged by the antivibration element. The work apparatus has a switch, for actuation by an operator, which includes a first contact element and a second contact element. When the switch is closed, the first contact element and the second contact element contact each other. When the switch is open, the first and second contact element do not establish an electrically conductive contact. The second contact element is part of the second assembly. The first contact element is part of the first assembly and, when the switch is closed, the first contact element and the second contact element bridge the vibration gap between the first and second assembly.

Handheld work apparatus

A handheld work apparatus has a housing with a guide bar affixed thereto. A saw chain is driven along the guide bar which defines a central plane. A drive element for the chain is in a sprocket wheel space delimited by a sprocket wheel cover. The cover has a longitudinal edge which delimits the space adjacent to a first side of the saw chain. The longitudinal edge has a length from an entry region to a discharge opening. Over at least 50% of this length, the longitudinal edge is at a distance (L) to the housing. The distance (L) corresponds to the chain width (a). The distance of the longitudinal edge of the cover increases at the discharge opening in the running direction of the first side. The largest distance (b) of the longitudinal edge to the central plane is at least 110% of the smallest distance (c).

A housing cover arrangement of a hand-held power tool has a cover having a cover edge and a lateral surface delimited by the cover edge. At least one spring clip is provided that removably connects the cover to a part of the power tool. The at least one spring clip is disposed, when securing the cover to the part, on the lateral surface in the area of the cover edge and is oriented in a clamping direction that extends transversely to the cover edge. At least two supports are disposed along the cover edge and act in the clamping direction. The at least one spring clip is arranged between the at least two supports.

Cover arrangement for a housing of a hand-held power tool

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 method is provided for producing a cylinder in a two-cycle engine. The cylinder bore is first machined as a preparation for the provision of a coating. The thereby resulting window edges that surround an inlet window are then at least partially chamfered. The cylinder bore is consequently provided with the coating, which at least partially overlaps the chamfered window edge. There thereby results in the region of the window edge a location of least spacing relative to the axis of the transfer channel. The piston liner or gliding surface is finally machined to a finished dimension such that in the region of the chamfered and coated window edge or corner there is formed a coating edge having a wall spacing relative to the location of least spacing, which such wall spacing having a maximum value of 0.7 mm.

Method of producing a cylinder in a two-cycle engine

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Kernen, Germany

Ralf Blechschmidt