Husqvarna Ab

Albin Hagberg

Patrik Melin

Göran Landén

In a combination of a sprocket arrangement () and a saw chain (), a sprocket tooth spacing (TI) between consecutive sprocket teeth () relates to a drive link spacing between consecutive drive links () of the saw chain () such that the guide teeth () of two or more drive links () may enter between a pair of consecutive sprocket teeth ().

Sprocket arrangement, saw chain, and combination of sprocket arrangement and saw chain

A power tool operator protection system comprises a plurality of wearable position sensors configured to be worn by an operator of a handheld power tool; a power tool position sensor configured to detect the position of a handheld power tool; and processing equipment configured to generate a model of the operator based on the mutual positions of the respective wearable sensors relative to each other, the mutual positions defining the operator's posture; associate each of a plurality of limbs (-) of the operator with a respective protection volume (-); and based on the position and/or motion of the power tool in relation to the protection volume (-) indicating an imminent danger that the working implement enters a protection volume (-), generate a protection signal.

Power tool operator protection system and method

A cutting blade for a clearing saw includes a plurality of teeth, with at least some of the teeth having a leading edge, a trailing edge, and a point in between the leading and trailing edges. The trailing edge can be hardened to a depth in the range 0.02-1.5 mm, and the leading edge may be left unhardened to provide a cutting blade with increased durability and efficiency, that can still be filed manually to remain sharp.

Cutting blade and method for producing such a blade

A sprocket arrangement () for a handheld power tool such as a saw, comprising a drive unit configured to rotate a drive shaft and cutting tool configured to be driven by the drive shaft () via the sprocket arrangement. The sprocket arrangement () comprises a gear () and at least one flexible element () arranged such that the drive shaft () in the handheld power tool is resiliently connected to the cutting tool in the handheld power tool. A handheld power tool comprising a drive unit, a drive shaft, driving means, and a sprocket arrangement is also provided.

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Jönköping, Sweden

Albin Hagberg