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US4691661: Self-adjusting breakwater for artificial harbors

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Filing Information

Inventor(s) Salvatore Deiana ·
Assignee(s) DEIANA SALVATORE ·
Attorney/Agent(s) Antonelli, Terry & Wands ·
Primary Examiner Peters, Jr.; Joseph F. ·
Assistant Examiner Bartz; C. T. ·
Application Number US6654900
Filing date 09/27/1984
Issue date 09/08/1987
Predicted expiration date 09/08/2004
U.S. Classifications 114/267  · 114/266  ·
International Classifications E02B 306  ·
Kind CodeA
International Classifications 114266;267 ·
Related U.S. Application DataThis is a continuation-in-part of U.S. patent application Ser. No. 378,174 filed May 14th, 1982, now U.S. Pat. No. 4,487,151, issued Dec. 11, 1984.
Foreign Priority CA377683 - 05/15/1981 ·
6 Claims, No Drawings


Abstract

An artificial breakwater which dynamically changes shape and thus absorbs both surface and undersurface wave energy with varying wave height. The breakwater elements are flexible and extensible walled bags of which a major part is to be submerged below the surface of the sea. At least one anchor is fixed by a cable to the bottom of the bag. The bag is filled mostly with water and partly by air, whereby at least part of the air filled portion extends above the surface of the sea. The flexibility and extensibility of the bag is such that in the presence of waves its vertical dimension increases or reduces, thereby impeding transmission of wave energy at and below the surface.

Independent Claims | See all claims (6)

  1. 1. For use in a artificial breakwater an extensible and flexible walled sealed bag of which a major part is to be submerged below the surface of the sea, at least one anchor fixed by a cable to the bottom of the bag, the bag being filled mostly with water and partly by air, whereby at least a part of the air filled portion extends above the surface of the sea, the extensibility of the bag being such that in the presence of waves or troughs between waves its vertical dimension dynamically can increase or reduce thereby impeding transmission of wave energy at and below the surface therethrough, the bag being divided into a plurality of sealed compartments isolated from each other by impermeable extensible and flexible walls, and a plurality of anchors are fixed by separate cables to the bottom of the bag, whereby the bag, when deployed, takes the form of a wedge in cross section.
  2. 5. An artificial sea wave breakwater comprising a plurality of rows of floating flexible sealed walled bags, the bags of successive rows being located opposite the gaps betwen the bags of preceding rows, each bag being formed of water-tight compartments separated by flexible bellows shaped walls, a valve extending into the top of each compartment for introducing air therein, each compartment being filled partly with air and mostly with water, anchors fixed by cables along and to the bottom of each bag, whereby each bag partly floats in a vertically elongated shape above the associated anchors, the flexibility of the bags and the walls being such that the vertical elongation of the bags changes with wave motion, elongating vertically in the presence of a wave and shortening vertically in the presence of a trough between waves, thus dynamically varying its vertical size with wave height, the plurality of bags thereby absorbing wave energy both at and below the surface of the sea.

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
CA1198940 DEIANA SALVATORE DEIANA SALVATORE Jan 1986
US4691661 DEIANA SALVATORE Salvatore Deiana Sep 1987