Andreas Stihl Ag Co. Kg

Alexander Fuchs

Jochen Buchholtz

Oliver Gerstenberger

Berthold Schell

Matthias Schulz

Jan Föhrenbach

Klaus-Martin Uhl

Norbert Apfel

Jonas Lank

Helmar Amend

Matthias Müller

Thomas Lux

Markus Oesterle

Markus Pfeifer

Jonathan Seiz

Christoph Von Hiller

David Mitrega

Jan Foehrenbach

Thomas Voigt

Bernd Hein

Ruediger Ludwig

Klaus Dussler

Christine Rominger

Michael Leiter

Maureen Wittig

A hand-held suction system includes: a hand-held suction device, a tube unit and a bag unit, wherein the tube unit has a suction tube and a tube connecting part, and wherein the bag unit has a collecting bag and a bag connecting part. The tube connecting part and the bag connecting part are designed to form a mechanical connection to one another in order to hold the bag unit by way of the tube unit. The tube connecting part is arranged in such a way on a circumference of the suction tube, in an upper half of the circumference in a circumferential direction, in a correct operating position of the suction system, and the suction system is designed in such a way that the bag unit held by the tube unit extends downwards in the circumferential direction along the suction tube, on the upper half of the circumference.

Hand-held suction system

A guide bar () for the saw chain () of a motor-driven chain saw includes a longitudinal bar base body () of solid material having a reversal section () and a mounting section (). A weight recess () is formed in a flat side () of the bar base body (). The weight recess () extends essentially along the bar base body () and is closed by a cover plate (). A light-weight, torsion-resistant guide bar is produced in that a longitudinal rib () supporting the cover plate () is arranged in the weight recess () and extends in the longitudinal direction () of the guide bar ().

Weight-reduced guide bar of solid material

The invention relates to a chipper chain () for a motor-driven chain saw () as well as a chain saw having such a chipper chain (). The chipper chain () includes drive links (), connecting links (), and cutting links (). The drive links () each have a drive projection (). The cutting links () each have an upper cutting blade () and a depth limiter () which leads the upper cutting blade (). The chipper chain () has a maximum width (A) which is defined by the upper cutting blades (), a maximum height (C) which is measured perpendicularly to its longitudinal axis and extends from the drive projection () to the upper cutting blade (), and an average divide (T) predetermined by the average distance of adjacent pivot pins (). The product of the maximum width (A), the maximum height (C), and the average divide (T) is &#x2264;450 mm. The driving power of the motor-driven chain saw () is &#x2264;1.0 kW.

Chipper chain and motor-driven chain saw having a chipper chain

A guide bar for a saw chain includes an elongate, flat base body made of a basic material. The base body extends along a longitudinal center axis and, in order to guide a saw chain, has a running surface formed on an outer periphery thereof and a guide groove formed in the outer periphery of the base body. The guide groove has a groove base. A direction-reversing section for the saw chain is provided at one end of the base body. The direction-reversing section includes at least one add-on component having a running surface made of more wear-resistant material than the basic material of the base body. The add-on component is secured to the base body of the guide bar by at least one weld seam. The weld seam extends between the add-on component and the base body and is located spatially beneath the groove base.

Guide bar for a saw chain having a reduced-wear direction-reversing section

A cutting assembly of a chainsaw includes a saw chain and a guide bar () for guiding the saw chain () along a peripheral edge () of the guide bar. The saw chain () has drive links () having drive bases () which with their side surfaces (') are slidingly guided between the side walls () of a guide groove () of the guide bar () with the formation of a friction pairing. Lubricant pockets () are formed in the side surface (). The lubricant pockets () are only open toward the corresponding side wall () of the guide groove () and are otherwise closed. Offside the lubricant pockets (), the side surface () has a flat sliding surface () which slides on the side wall () of the guide groove (). The lubricant pocket () has a mean diameter and a maximum depth. The ratio of the mean diameter to the maximum depth lies in a range of 5.0 up to and including 25.0.

Cutting assembly of a chainsaw and saw chain

A guide bar for a chain saw has an elongate main body of steel. The main body has flat sides and upper and lower peripheries defining a guide groove for a saw chain. An elongate window is formed in the main body between the peripheries and is filled with an insert made of a fiber composite material made up of resin and fibers. The fibers are in the direction of the longitudinal axis of the main body. The insert includes a plurality of fiber layers that are bonded with resin. A central layer is formed from a fiber layer and the fibers thereof are at an angle to the longitudinal axis. Two fiber layers having fibers oriented in the direction of the longitudinal axis of the main body are on both sides of the central layer. The inner fiber layers are covered outwardly by a woven fabric.

Guide bar having a carbon fiber reinforced plastic insert

Growing community of inventors

Bietigheim-Bissingen, Germany

Alexander Fuchs