Aktiebolaget Electrolux

H&aring;kan Larsson

Ove Donnerdal

Dan Nilsson

Ove Donnderdal

A device in connection with a hand-operated working machine with a water flow directed to the working tool comprises a first control which is a control ( ) for a drive motor ( ) for the tool, and a second control which is a control ( ) for the water supply to the tool. A water control valve ( ) in a water supply conduit ( ) can be adjusted to adopt chosen opening positions, and is arranged constantly to be kept open in any chosen opening position when the motor is running the tool under influence of the drive motor control. The chosen opening positions are adjustable, i.e. the through opening of the valve can be increased or decreased by using water supply control ( ).

Device in connection with hand-operated working machine

A submersible fuel filter device ( ) of suctional type is connectable to the end of a fuel inlet hose ( ) in a fuel tank and comprises a filter ( ) consisting of porous plastic with a surrounding outer wall ( ) with an upper border ( ), a lid ( ) provided with an outlet opening ( ) that covers the filter ( ) and is connected to the outer wall's upper border. The filter is embodied like a cup-shaped body and has a through flow thickness, or material thickness, which is considerably smaller than the other dimensions of the body, and its porosity is less than 10 &mgr;m. The inlet suction hose ( ) is connected to said outlet suction opening ( ).

Fuel filter

A device in connection with a cutting machine with an annular saw blade and with a driving mechanism for off-center drive of the blade. The device includes two first rollers arranged to contact and roll against the web of the saw blade on one side of the blade and two second rollers arranged to contact and roll against the web of the blade on the other, opposite side of the blade. The first rollers are mounted on a first shaft, which is movable along a path against the plane of the saw blade, perpendicularly to the centerline of the shaft, for pressing the first rollers with a certain desired force against the blade web under counter force by the second rollers on the opposite side of the blade.

Device to hold and guide an annular shaped saw blade

A drive wheel for off-center drive of an annular saw blade in a cutting machine, consists of at least two components, which are separable but held together during operation, namely a holding disc and a drive ring, the latter having an encircling drive groove for the inner edge of the saw blade, the drive ring being arranged radially outside a central portion of the holder disc.

Growing community of inventors

Mölndal, Sweden

Håkan Larsson

Growing community of inventors

Mölndal, Sweden

H&aring;kan Larsson

Håkan Larsson