发明授权
US5984333A Wheelchair which is provided with a swivel castor 失效
配有旋转脚轮的轮椅

Wheelchair which is provided with a swivel castor
摘要:
A wheelchair with adjustable swivel castors is described. The wheelchair includes a mechanism to limit the swivel range of the castors. The swivel range may be limited manually or automatically as a function of the terrain or the speed of the chair.
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