Importance

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Abstract

Propulsion device for boats or device or energy production comprising: a first track a second track; driving wheels each having a peripheral surface comprising a friction device rotatably arranged in at least one frame, wherein the first track is arranged in contact with the friction devices at a first set of driving wheels, the second track is arranged in contact with the friction devices at a second set of driving wheels, such that the tracks move with the same speed as the peripheral surface of the rotatable driving wheels where the track is in contact with the friction devices when the driving wheels rotate; a plurality of shovel rollers each comprising a first and a second end and between the ends a device with an outer periphery, wherein the first ends of the shovel rollers are arranged in the first track and the second ends of the shovel rollers are arranged in the second track such that the shovel rollers move with the tracks in relation to the structure when the driving wheels rotate, wherein the device further comprises a flat continuous carpet-like device with side-ends which is arranged between the first and second sets of driving wheels and abutting the outer periphery of the shovel rollers; that the carpet-like device forms a shovel surface between two of the shovel rollers, and that the formed shovel moves in relation to the frame when the shovel rollers move in relation to the frame.

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First Claim