Patent ID: 6135837
Filing Date: 2000-10-24
Classification: B63B,F15B

Abstract:
A water sports board for use in supporting a person riding along on the top surface of the water comprising:an elongated buoyant board having a length L1, a width W1, and a thickness T1; said buoyant board having a top surface, an interior, a bottom surface, a front end, a rear end, a left edge and a right edge;at least one elongated fin having a front end, a rear end, a top edge and a bottom edge;an elongated slot in said bottom surface of said buoyant board for each of said fins for reciprocally receiving said fins when they are raised up into said interior of said buoyant board;mechanical means for reciprocally moving said fin between an upper position inside said slot in said buoyant board and a lower position in which a predetermined portion of said fin extends below said bottom surface of said buoyant board; andhydraulic means for actuating said mechanical means; said hydraulic means having a resilient compressible bladder in a closed fluid system that is squeezed or released to instantaneously on demand move said fin between said upper and lower positions.