Method and device for progressively producing an underwater laying-out channel
OwnerRudolf Harmstorfinventor
Life of this patent
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Abstract
A method for progressively producing an underwater laying-out channel (3) for an object (53) to be laid out, like a cable or the like, in an underwater ground by flushing and by mechanically loosening ground formations (7) which are resistive against flushing, by means of a mechanical loosening device (31) having a given maximum working depth, characterized by lowering the mechanical loosening device (31) to the ground formation (7) which is resistive against flushing, and advancing, in an advancing direction, the mechanical loosening device through the ground formation which is resistive against flushing, with the working depth being effective from the surface of that ground formation.
Claims9
An apparatus for progressively producing an underwater channel in which an object such as a cable or the like is to be laid out and buried in an underwater ground comprised of a base layer of a formation solid enough to resist the formation of a channel by a flushing operation and requiring a mechanical loosening operation to form the channel, said apparatus comprising a flushing device movable through any flushable ground area of the underwater ground above the base layer, and a mechanical loosening device arranged in the lower end area and to the rear of the flushing device in the direction of travel along the channel being formed, said loosening device being supported at least in part on the upper surface of the base layer by said flushing device.
Dependencies are inferred from the claim text.