NOVELTY - The unit has a conversion module (2a) converting external forces (F) into rotating axle movements. A restriction device (3) is arranged to forward the external forces into a reciprocating movement over the conversion module. A central unit (1a) encloses the conversion module. The reciprocating movement is a reciprocating movement of a fluid (FL) within an enclosed volume and/or a reciprocating movement of a mechanical arrangement to transmit the external forces into reciprocating movements over the conversion module. A compliance chamber is connected to surroundings by a one-way valve.    USE - Energy transforming unit for converting external forces into rotating axle movements on a force transmitting axle in an energy transforming system (claimed) i.e. wave power plant.    ADVANTAGE - The central unit is provided with latch valves adapted to transform a free reciprocating fluid flow into a closed flow so as to prevent the movements of a reciprocating volume, so that an energy extraction from the wave movements can be optimized, and the reciprocating movements can be transformed into movements providing an effective translation of mechanical work into production of electric power in an effective way. The fluid pressure in the conversion modules with mechanical transmissions can be set to a service volume pressure when internal compliance volumes and service volumes are used so as to create pressure relief in the conversion modules that reduce separation forces within the central unit, thus making a construction lighter, cost-effective and easier.    DETAILED DESCRIPTION - The mechanical arrangement is selected from a gear rack, a chain, a timing belt, a cord, a steel band, a wire and a rope. An INDEPENDENT CLAIM is also included for an energy transforming system comprising a point absorber.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of an energy transforming unit.    External forces (F)    Fluid (FL)    Central unit (1a)    Conversion module (2a)    Restriction device (3)