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1 “GoldDrive” is an infinite variable, bi-directional drive consisting of hydraulic fixed displacement pumps and motors. As a matter of fact “GoldDrive” is the hydraulic equivalent of the mechanical differential. The idea behind the development of “GoldDrive” is to overcome the limitation of starting torque. According to the traditional equation, torque is equal to power over speed and as a result, we need an infinite amount of torque to start a load at zero output speed. The solution is Slippage, slippage of electrical, mechanical, hydraulic and pneumatic transmissions. “GoldDrive” enables us to achieve maximum efficiency and starting torque at zero output speed without slippage.