Disclosed is rocking lever assembly for harnessing energy from surface waves. A rocking lever (303), connecting a floating body (301) and a dense solid body (302) with the flexible links (306/307) at the opposite arms (304/305) and a freewheeling mechanism (308/309) in between, rocks to rotate a line shaft (310/311) with the descending waves underneath floating body (301), in bearings mounted on a frame (320) held above waves. Sets of similar rocking levers (303), installed side by side, rotate said line shaft (310) uniformly. Another parallel line shaft (311), with similar accessories, mounted on the same frame to rotate oppositely, counters the overturning of said frame (320). These line shafts rotate one common shaft (315) unidirectional which being used as prime mover.
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