Ihc Holland Ie B.v.

Johannes Louis Leonardus Hessels

Boudewijn Casper Jung

Jan Albert Westerbeek

Arris Van Duijvenboden

Robert Jan Van Foeken

The invention relates to an assembly for centring a first elongate tubular element and a second elongate tubular element, such as an underwater pile accommodated within a noise mitigation screen, at a common central longitudinal axis along which axis both the first and second element extend, and wherein the centre system is provided with first coupling element for fixedly coupling the centre system with one of the first and second tubular elements, and second coupling element for engaging the other tubular element for centring the other tubular element at the central axis.

Centre system

The invention relates to a system for installing or removing foundation elements, such as piles, anchors, and conductors, in a subsea ground formation, comprising an impact weight, an hydraulic circuit in turn comprising an hydraulic cylinder for lifting and/or accelerating the impact weight respectively away from and towards the element, the cylinder comprising a piston connected to the impact weight, and wherein a pump for generating an underpressure in the hydraulic cylinder such as to lift and/or accelerate the impact weight by means of this underpressure.

System for and method of installing foundation elements in a subsea ground formation

An arrangement for installing building elements, such as piles and tunnel sections, into a ground formation, where a building element is provided. Two or more impact drivers for delivering blows to the element are mounted on or operatively connected to the element. Accordingly, large elements, such as monopiles for wind turbines, which may comprise a steel tube having a diameter in excess of 5 meters, or even tunnel sections, can be installed by utilizing a number of relatively small impact drivers.

Growing community of inventors

Mierlo, Netherlands

Johannes Louis Leonardus Hessels