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1. (WO2019003070) ELECTROMECHANICAL DRIVE SYSTEM
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Claims

1. An electromechanical drive system (1, la) for a mechanical power load (2), the electromechanical drive system (1, la) comprising:

- at least one electric motor (3) connec table to an electric power source (4) and provided with a shaft,

- a first switch (5) for switching the electromechanical drive system (1, la) on/off,

- at least a first transmission (6) connected at one side with a first end of the shaft (7) of the electric motor and connectable at the other end with a load (2),

- at least one electric power generator (8, 8a), and

- at least one second transmission (9),

characterized in that

- the second transmission (9) is connected at one side with a second end (10) of the shaft of the electric motor, which extends in a direction opposite to that of the first end (7) of the shaft of the electric motor (3), and which is connected at the other side with the electric power generator (8, 8a),

wherein the electric power generator (8, 8a) is electrically connectable via a second switch (11) with an electric power source (4) and the electric motor (3), such that the electric current from the power generator (8, 8a) can be directed to the electric motor (3) and/or to the electric power source (4).

2. Electromechanical drive system (1, la) according to claim 1, characterized in that the electric conductor between the electric power generator (8) and the electric motor (3) and the electric conductor between the electric motor (3) and the electric power source (4) is provided with a semiconductor diode (16).

3. Electromechanical drive system (1, la) according to any preceding claim, characterized in that the electric power source (4) is selected among an electric supply network, a battery, and a rechargeable battery pack.

4. Electromechanical drive system (1, la) according to any preceding claim, characterized by further comprising a control system.

5. Electromechanical drive system (1, la) according to any preceding claim, characterized in that the first and the second transmissions (6, 9) are selected among a stiff transmission system, belt transmission, gear transmission, clutch, mechanical switch, chain transmission, pneumatic transmission, hydraulic transmission, and magnetic transmission.

6. Electromechanical drive system (1, la) according to any preceding claim, characterized in that the electric motor (3) is selected among an AC or a DC, a single-phase or a multi-phase, a synchronous or an asynchronous, a brush or a brushless electric motor, an electric motor with water or air cooling, with permanent magnets or electromagnets.

7. Electromechanical drive system (1, la) according to any preceding claim, characterized in that the electric power generator (8) is selected among an AC or a DC, a single-phase or a multi-phase, a synchronous or an asynchronous, a brush or a brushless generator, a generator with water or air cooling, with permanent magnets or electromagnets.

8. Electromechanical drive system (la) according to any preceding claim, characterized in that a rotor (13) of the electric power generator is formed as a socket able to receive a second transmission (9) and at least one portion of the electric motor (3), preferably a predominant part of the electric motor (3), wherein the rotor (13) of the electric power generator accommodates circumferentially arranged magnets (14), and wherein on the part of the electric motor (3), beyond which the rotor (13) of the electric power generator does not project, a stator (15) of the electric power generator is circumferentially arranged and stiffly connected with it, wherein the circumferential part of the stator (15) of the electric power generator extending circumferentially around a part of the rotor (13) of the electric power generator with magnets, accommodates coils for inducing electric current, wherein the shell of the electric motor is circumferentially coated with an electromagnetically insulating layer (12) that prevents mutual electromagnetic influence between the electric motor (3) and the electric power generator (8a).

9. Electromechanical drive system (la) according to claim 8, characterized by comprising a cooling device for cooling the electromechanical drive system.