Husqvarna Ab

Goran Landen

Emmanuel Legrand

Thomas Engman

Dan Ericsson

Dan Gunnarsson

Arrangement in an internal combustion engine, said arrangement comprises a fan for supplying combustion air to a carburetor. The fan comprises a fan housing () and a fan wheel () provided with a number of wings () extending in substantially radial direction from the axle () of rotation for the fan wheel (). The arrangement further comprises an air inlet () for combustion air to the carburetor arranged at the outer edge of the wings () on the fan wheel (). The outer edge of the wings () is arranged in a direction substantially parallel to the axle () of rotation for the fan wheel(). The side of the air inlet () closest to the outer edge of the wings () on the fan wheel () is arranged at an angle of 10&#xb0; to 60&#xb0; in relation to the outer edge of the wings () on the fan wheel () to reduce the amount of sound generated.

Arrangement in air-cooled internal combustion engine

Cutting filament

A power saw chain comprises a central row of driving links and outer rows of cutting links and side links with each cutting link being laterally aligned with a side link and adjacent a side link longitudinally of the chain. The undersurfaces of said adjacent side links are designed to run on a guide plate surface while the undersurfaces of the cutting links and the laterally aligned side links have clearance from said surface to reduce the vibration effect of the chain.

Growing community of inventors

Huskvarna, Sweden

Goran Landen