Tidal power generation

F - Mech Eng,Light,Heat,Weapons – 03 – B

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F03B 13/18 (2006.01) F03B 13/26 (2006.01)

Patent

CA 2420998

A method and apparatus is provided for obtaining energy from vertical tidal motion, comprising hollow containers which rise and fall with the tide. The containers axe rotatably connected to a drive shaft such that the rising or falling motion of the containers causes rotation of the drive shaft. The containers can be empty or filled with water, so that the buoyancy force can be maximized as the empty containers are raised by the tide and the weight of the filled containers maximizes the force as the containers are lowered with the receding tide. The motion of the containers are preferably caused to lag the vertical tidal motion, with the extent of the lag timed to coincide with the "slack tide" period of the tidal cycle, thereby always providing at least one container to be in motion in the up or down direction.

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