Husqvarna Ab

Aktiebolaget Electrolux

Anders Reuterberg

Niklas Sundberg

Anders Köhler

Bengt A Arvidsson

Hans Petersson

Pär Martinsson

Stefan Kullberg

Anders Jakobsson

Mats Lawenius

Bengt Arvidsson

Kenth Gustavsson

Anders Kohler

Niklas Sunberg

A hand-held power tool may include a rotatable work tool with a center, a circumference and a direction of rotation. The power tool may further include a blade guard arrangement arranged to shield a variable part of the rotatable work tool which may include a blade guard and a swiveling cover part attached to the blade guard. In a first position, the swiveling cover part may be positioned such that a first portion of the circumference is covered, following the blade guard, and extending an angular distance after the blade guard, in the direction of rotation. The swiveling cover part may be moveable between the first position and a second position where a cutting operation of the rotatable work tool along the first portion of the circumference occurs. The cover part may be biased towards the first position.

Protection arrangement for a power tool

A portable water tank assembly for a dust emitting construction machine, such as a machine for cutting concrete, stone, ceramic materials and the like may include a water container () and an electric pump () powered by a battery for pumping water from the container () through an outlet to the construction machine. To provide a portable water tank assembly which provides a long service life without changing battery, is easy to handle and carry and that is robust and reliable, the pump is a low pressure pump (), of 0.1-1.5 bar, preferably of 0.3-1.2 bar, that is preferably submersible and placed inside the water container. The assembly has at least 5 liter capacity.

Portable water tank assembly for a dust emitting construction machine

A portable water tank assembly for a dust emitting construction machine, such as a machine for cutting concrete, stone, ceramic materials and the like, said assembly comprising a water container () and an electric pump () powered by a battery for pumping water from the container () through an outlet to the construction machine. To provide a portable water tank assembly which provides a long service life without changing battery, is easy to handle and carry and that is robust and reliable, the pump is a low pressure pump (), of 0.1-1.5 bar, preferably of 0.3-1.2 bar, that is preferably submersible and placed inside the water container (); and said assembly has at least 5 liter capacity. Preferably the hood member () has a first compartment () for a battery for delivering power to the pump () and a battery () located in the compartment (), and it may have a second compartment () for a battery charger () and a third compartment () for a spare battery.

This invention relates to a flexible intake system for a crankcase scavenged two-stroke internal combustion engine () having an additional air supply to its transfer ducts. The intake system comprises a flexible intake duct () connecting a fuel supply unit () e.g. a carburetor with an engine cylinder () and at least one flexible air duct () connecting a valve housing () for additional air with the engine cylinder. The end portion of the flexible intake duct () and at least one air duct () is secured to the cylinder by means of a baffle () made of a stiffer material than the ducts () themselves.

Flexible intake system for a two-stroke internal combustion engine

A portable, hand-held, combustion engine powered working machine comprises a tool unit () including a rotatable working tool (), and a machine unit () including an internal combustion engine (), an assembly () for supplying air and fuel to the engine, and an air cleaning system, which comprises a filter assembly () including at least two filters (), referred to as pre-filter () and main filter (), for cleaning the air that shall be supplied to the engine. The pre-filter is accommodated in an upper filter chamber () between a top cover () and a pre-filter bottom (), and the main filter is accommodated in a lower filter chamber under the pre-filter bottom, said lower filter chamber being defined by the underside of the pre-filter bottom, a second filter bottom () at a distance from the pre-filter bottom, and a closed, circumferential wall () between the pre-filter bottom and the second filter bottom, said closed, circumferential wall forming a downwards directed protrusion on the underside of the upper filter bottom.

Combustion engine powered working machine

Power head with defined rear portion

A portable working machine comprising a tool unit () with a disc guard and a circular tool (), and a machine unit () with a filter system (), an internal combustion engine () with an engine cylinder () with bore () having a centre line (), a crankshaft () and a crankcase (), a fuel tank (), a muffler () with an entrance port () provided in the rear side of the muffler and facing an exhaust port () of the cylinder, handles () controls () and supports () on the underside of the machine unit for allowing upright positioning of the machine on a flat ground. The cylinder bore () is inclined forwards in a direction towards the tool unit, such that the centre line () of the cylinder bore forms a tilt angle larger than zero, in the direction, to a perpendicular to any or both of the following lines: (a) a base line () which is a line coinciding with a horizontal surface on which the machine is resting in an upright position, when the supports on the underside of the machine unit contact the surface, and (b) a tangential line (') extending from a peripheral point of the tool, on the lower part of the tool when the machine has an upright position, to the bottom side of a rear support of the machine unit.

Growing community of inventors

Lerum, Sweden

Anders Reuterberg