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1. WO2006092138 - APPARATUS FOR GRINDING A SURFACE COMPRISING TWO MOVABLY ARRANGED HOODS

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[ EN ]

CLAIMS

1. An apparatus (1) preferably for grinding a surface, including at least one grinding unit, a screen (2, 3) and a guide member (5), where the grinding unit is a rotatable and preferably horizontally arranged grinding cylinder, which at a cylinder surface is provided with a number of preferably replaceable grinding elements, where the screen (2, 3) entirely or partly encloses the grinding unit, and where the guide member (5) is connected with the screen (2), characterised in that the screen includes an outer screen (2) and an inner screen (3) which are mutually movably connected, and where the inner screen (3) includes a first suction screen (11) and a second screen (12) which are mutually movably connected.

2. Apparatus (1) according to claim 1, characterised in that the guide member (5) includes an internal duct and a pipe connection (8), where the internal duct connects the suction screen (11) and the pipe connection (8) which is adapted for connecting a suction unit.

3. Apparatus according to claim 1, characterised in that the outer screen (2) is provided with a pipe connection adapted for connecting to a suction unit.

4. Apparatus according to claim 1, characterised in that the first suction screen (11) and the second screen (12) are provided with brushes along a lower edge.

5. Apparatus (1) according to any of claims 1-4, characterised in that the grinding elements are arranged radially in the surface and in parallel in the longitudinal direction of the grinding cylinder.

6. Apparatus (1) according to claim 5, characterised in that the grinding elements include at least one piece of abrasive paper.

7. Apparatus (1) according to any of claims 1 -6, characterised in that the apparatus (1) includes a motor (J) which is drivingly connected with the grinding cylinder.

8. Apparatus according to any of claims 1-7, characterised in that the grinding cylinder includes a drum motor.