Patent ID: 8905893

Claim:
Automatic toothed variable-speed gearbox, comprising: a driving gear, a driven gear, gears of a planetary mechanism configured to transfer power from the driving gear to the driven gear through at least a first power-transfer flow and a second power-transfer flow flowing from the driving gear to the driven gear, characterized in that the first power-transfer flow comprises at least one gear of a planetary mechanism, the second power-transfer flow engages with said at least one gear, the first power-transfer flow and the second power-transfer flow are configured to apply forces equal in terms of magnitude and opposite in terms of orientation to said at least one gear, to stop said at least one gear, thus stopping power transfer via the first power-transfer flow and re-distributing power transfer to the second power-transfer flow, and wherein a carrier gear of a first stage is integrated with an internal sun gear of a second stage, and an external sun gear of a first stage is integrated with a carrier gear of a second stage.