E - Fixed Constructions – 01 – H
Patent
E - Fixed Constructions
01
H
E01H 1/00 (2006.01) E01H 12/00 (2006.01) E02B 3/02 (2006.01) E02F 5/28 (2006.01)
Patent
CA 2048041
To remove a surface layer (54) from an underwater bed (50), without disturbance of the environment, the device (1) to carry out this process is characterised in that it comprises flexible edge means (5) along virtually completely the whole length of its outer (34) for bottom edge (3) for interacting in a sealing manner with the underwater bed (50). In this way, the process of removing the surface layer (54) is carried out within a safely confined area (52). Said edge means (5) can comprise a suspended, relatively thin loose fitting flexible web-like means, the lower edge of which is preferably weightened. To decrease or eliminate the occurence of eddies in the water during raising and lowering of the device (1), closable holes (14) can be provided in the screen (2). These holes (14) can be shut off by panels (15) which can be moved virtually parallel to the screen (2). Removing of surface layer (52) can be carried out using e.g. water jets, cutter means, screw type means, brushes etc.
Hollandsche Beton Groep N.v.
Mccarthy Tetrault Llp
LandOfFree
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