发明名称 |
Extendible and elevating footrest for wheelchair |
摘要 |
The device is a footrest support structure for attachment to the frame of a wheelchair. A footrest is carried on the end of a telescoping leg pivotally engaged to a wheelchair frame. The telescoping leg automatically extends as it is elevated, by means of a folding link that engages the two parts of the leg. The link is engaged as well by a lever lock that permits the first arm to slide freely in a first direction but not in a second direction until the lock is actuated. The first arm of the folding link is pivotally engaged to the upper leg at a first pivot point intermediate the ends of the first arm and the leg, respectively, for pivoting the arm in a generally vertical plane. The second arm is pivotally engaged at its lower end to the lower leg at a second pivot point. The distance between said first and second pivot points extends as the footrest support structure is elevated, thus causing the leg to elongate.
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申请公布号 |
US5711580(A) |
申请公布日期 |
1998.01.27 |
申请号 |
US19960713695 |
申请日期 |
1996.09.13 |
申请人 |
ADVANCED MOBILITY SYSTEMS CORPORATION |
发明人 |
BARCLAY, HUGH WALTER;CHRISTY, DAVID MILLARD |
分类号 |
A47C7/50;A61G5/12;(IPC1-7):A47C7/50 |
主分类号 |
A47C7/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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