for immobilising, e.g. using wedges or clamping rings

Full Title

Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs ; Construction methods therefor (; anchoring floating platforms B63B21/00; floating platforms, e.g. anchored, B63B35/44; ) > Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction (platform lifts in general B66F7/00) > for immobilising, e.g. using wedges or clamping rings