Patent ID: 7304399
Filing Date: 2007-12-04
Classification: F03B,Y02E

Abstract:
1. A wave power assembly comprising; a hull; a linear electric generator having a rotor and a stator, said rotor being connected to said hull so that lifting force is transferred from said hull to said rotor, said stator being adapted to be anchored to a sea/lake bottom; and spring means configured to exert a force on said rotor, which force, during at least a part of the motion of said rotor, counter-directs the lifting force exerted on said rotor by said hull as a consequence of the motion of said hull and the force exerted by said spring means, said rotor being configured to execute a reciprocating motion between two end positions defining the length of stroke of said rotor, said rotor having a predetermined fixed maximum length of stroke; said spring means being configured to, at a motion amplitude corresponding to about 50% of the maximum length of stroke of said rotor, exert a force, the size of which varies by a factor of 2.5 as a maximum.