| 摘要 |
PROBLEM TO BE SOLVED: To provide a front-left wheel with an operation shaft to make it freely maneuverable, and enable a front-right wheel to follow its movements. SOLUTION: In this wheeled chair, only a rear-left wheel is electrically driven and a rear-right wheel is free. The front-left wheel is operable with the operation shaft provided, and the front-right wheel follows its movements. The wheeled chair advances by the rotation of a reduction bevel gear via a bevel pinion and transmits the rotation instantly to a meter which indicates the twist angle of the front-left wheel. A user advances the wheeled chair by watching the meter and turning a circular handle. COPYRIGHT: (C)2004,JPO
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