A weight-bearing device includes a single wheel, a frame attached to the wheel, and an electric motor attached to the frame. The electric motor is configured to rotate a first gear, connected to a second gear with a chain. The second gear is connected to the wheel. The second gear and the first gear may have a gear ratio of greater than 8:1.
MOTORIZED WEIGHT-BEARING DEVICE
APPAREIL D`APPUI MOTORISE
2020-01-20
Patent
Electronic Resource
English