Device for levelling a layer of sand
OwnerJukka Tapani Tuusineninventor
Life of this patent
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Abstract
A device for levelling a sand layer (1) at the landing place of various jumping events, which device includes rails (2) on either side of the sand layer and a trolley (3) travelling back and forwards on them, which in turn includes at least a rake member (4) for loosening the sand layer, a sand-moving member (5.1, 5.2) for filling pits, and a levelling member (6) for levelling the loosened sand layer, as well as devices for moving these in a vertical direction. The sand-moving member consists of several parallel V-ploughs (5.1) pointed in the opposite direction to the levelling direction and a transverse bar (5.2) or similar together with support devices, moving after the rake member (4).
Claims7
A device for levelling a sand layer at the landing place of various jumping events, the device including rails on either side of the sand layer and a trolley travelling back and forwards on the rails, the trolley including a rake member for loosening the sand layer, a sand-moving member for filling pits, and a levelling member for levelling the loosened sand layer, as well as devices for moving said rake, sand moving and levelling members in a vertical direction, characterized in that the sand-moving member comprises several laterally spaced V-ploughs pointed in the opposite direction to the levelling direction and a transverse bar together with support devices, moving after the rake member.
Dependencies are inferred from the claim text.