Invention Grant
US09248066B2 Wheelchair and combined bed 有权
轮椅和组合床

Wheelchair and combined bed
Abstract:
A wheelchair includes a first link that supports a first bottom, a second link that supports a second bottom, a third link that supports a third bottom, a fourth link that supports a fourth bottom, a first base portion that supports a fifth bottom, and a first drive link. The first drive link has a first roller and a second roller. The second link and the third link are provided with rail portions respectively. The wheelchair has wheelchair link portion allows the first roller to slide in the rail portion of the second link, and allows the second roller to slide in the rail portion of the third link.
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