Block for absorbing water flow energy

Claim 1

A BLOCK FOR USE AS A MEMBER FOR RESISTING AND DISSIPATING THE KINETIC FORCES OF WATER, SAID BLOCK COMPRISING A FLAT SUBSTANTIALLY RECTANGULAR BODY MEMBER HAVING TWO FLAT FACES ON OPPOSITE SIDES OF THE BLOCK AND FOUR EDGE FACES AROUND THE PERIPHERY OF SAID BLOCK, SAID BLOCK HAVING A CENTRAL APERTURE THERETHROUGH FROM ONE FLAT FACE TO THE OTHER FLAT FACE, LEGS AT CORRESPONDING POSITIONS ON EACH CORNER OF EACH FLAT FACE OF SAID BODY MEMBER, SAID LEGS BEING CONGRUENT AND EACH HAVING A SUBSTANTIALLY SQUARE CROSS SECTION AND PROJECTING FROM SAID FLAT FACES, SAID LEGS ON EACH PAIR OF ADJACENT CORNERS OF SAID BODY MEMBER HAVING THE A BASES THEREOF AT THE SAID FLAT FACES SPACED FROM EACH OTHER A DISTANCE WHICH IS AT LEAST SLIGHTLY GREATER THAN THE TOTAL DIMENSION OF THE TERMINAL ENDS OF THE LEGS REMOTE FROM THE FLAT FACES IN THE DIRECTION IN WHICH THEY ARE SPACED, THE SPACING OF SAID LEGS ON ADJACENT CORNERS IN ANY PLANE PARALLEL TO SAID RESPECTIVE FLAT FACES AND LYING BETWEEN THE BASE OF SAID LEGS AND THE TERMINAL ENDS THEREOF BEING AT LEAST AS GREAT AS SAID DISTANCE, SAID RECTANGULAR BODY MEMBER EXTENDING AT LEAST PART WAY INTO THE SPACE BETWEEN EACH PAIR OF ADJACENT LEGS.