Husqvarna Ab

Besim Mesinovic

Andreas Fogelberg

Oskar Pettersson

A transmission arrangement () comprising a first axle () that is rotatable about a first axis () and is connected to a first pulley () that is arranged to drive an endless power transferring means () that further is adapted to drive a second pulley () that is rotatable about a second axis (), where the transmission arrangement () comprises a first idle pulley () and a second idle pulley () which both are adapted to guide the endless power transferring means (), where the first idle pulley () is rotatable around a first idle pulley axis () and the second idle pulley () is rotatable around a second idle pulley axis (), where the distance between the idle pulley axes () is fixed and where the idle pulley axes () are pivotable around a common pivot axis (), wherein the first pulley () is positioned between the idle pulleys () and the second pulley () such that a distance between any one of the idle pulley axes () and the second axis () exceeds a distance between any one of the idle pulley axes () and the first axis ().

Transmission arrangement for a floor surfacing machine comprising a first and second idle pulley, both pivotable around a common pivot axis

A hose device may include a flexible hose device body having a first end configured to be attached to a cyclone and a second end with a free opening. The hose device may also include a plurality of weights affixed between the first end and the second end. When subjected to suction forces from a vacuum of the cyclone, the second end may be sucked upwards such that the plurality of weights hingedly swing toward the first end and the hose device body is in a retracted configuration. When released from the suction forces of the cyclone, the plurality of weights hingedly swing away from the first end and the hose device body extends downwards into an extended configuration by the gravity forces acting upon the weights, in the absence of the suction forces, to expand a size of the free opening.

Relief valve and a hose device for dust collectors, a dust collector and a method for operating a dust collector

The invention relates to a relief valve () for portable, industrial dust collectors. It has actuating means () for actuating the valve () between a closed position and an open position. According to the invention, the valve further includes retaining means () for maintaining the valve in the open position. The invention also relates to a hose device for a cleaner of a dust collector a dust collector. The hose device is arranged such that it covers the bottom of the grid means in the cleaner when the dust collector operates and falls down when the vacuum in the dust collector is released. The invention further relates to a cleaner, to a dust collector, to a grinding machine and to a method for operating a dust collector. These are in conjunction with the relief valve and/or the hose device. The invention also relates to a dust collector with cleaner means (), a relief valve () and an inlet valve () and synchronization means arranged to govern that the actuation of the inlet valve () is synchronized with actuation of the relief valve ().

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Gothenburg, Sweden

Besim Mesinovic