Patent ID: 6217256
Filing Date: 2001-04-17
Classification: E04H

Abstract:
A device for producing waves in a body of water comprising:a single hollow shell having substantially vertical side walls, said shell being at least partially filled with water,means suspending said shell in said body of water with said side walls being laterally unrestrained,means for vertically moving the shell periodically upwards and downwards within the body of water to produce waves in said body of water,said shell having an opening through which water can enter the shell when the shell is moved downwards within the body of water and from which the water can exit the shell when the shell is moved upwards within the body of water,said means for vertically moving the shell periodically comprising a drive means for developing an upward force to raise the shell within the body of water, said suspending means comprising a flexible linking means connecting the drive means and said shell.