• Ball screw variator 

  DULGHERU, Valeriu; CIOBANU, Radu; CIOBANU, Oleg; SLOBODEANIUC, Stanislav (Romanian Inventors Forum, 2025)

  The invention relates to the construction of machines, in particular, to transmissions with a variable transmission ratio. The technical result of the invention consists of the following: The execution of the inner bush ...
• Wind-solar hybrid modular system 

  BOSTAN, Viorel; BOSTAN, Ion; DULGHERU, Valeriu; CIOBANU, Radu; CIOBANU, Oleg; RABEI, Ivan; GUȚU, Marin (Romanian Inventors Forum, 2025)

  The invention relates to renewable energy conversion systems, in particular to wind-solar hybrid systems. The modular hybrid wind-solar system includes a cubeshaped housing (1), on the upper face of which the support (2) ...
• Hybrid propulsion system for a boat 

  DULGHERU, Valeriu; DUMITRESCU, Cătălin; DUMITRESCU, Liliana; RĂDOI, Radu; CRISTESCU, Corneliu; CIOBANU, Ion; CIOBANU, Radu; CIOBANU, Oleg (Romanian Inventors Forum, 2025)

  The invention relates to electrically powered boats, namely, to boats powered by renewable energy. Hybrid propulsion system for a boat, consisting of the boat body (1) installed on two floating bodies (2, 3), two wind ...
• Micro-hydropower plant with individual blade orientation 

  DULGHERU, Valeriu; RABEI, Iva; GUȚU, Marin; CIOBANU, Radu; CIOBANU, Oleg (Romanian Inventors Forum, 2025)

  The invention can be used in hydropower and relates to a micro-flow hydropower plant containing a low-power hydraulic turbine, intended for the production of electrical or mechanical energy in individual households, villages, ...
• Precessional gear transmission 

  BOSTAN, Viorel; BOSTAN, Ion; VACULENCO, Maxim; BODNARIUC, Ion; VENGHER, Dumitru; CIOBANU, Radu; CIOBANU, Oleg (Romanian Inventors Forum, 2025)

  The invention relates to the mechanical engineering, namely to mechanical transmissions. The transmission comprises a body (1), a satellite wheel (2) with two bevel gear rings (3) and (4) driven by a crankshaft (5) in ...

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