|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B60K-001/02 B60K-001/00 A61G-005/06 A61G-005/04 A61G-005/10|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 14 인용 특허 : 246|
Wheeled vehicles, such as wheelchairs, that are adapted to traverse obstacles are provided. The wheeled vehicles include a frame, drive wheels, front anti-tip wheels positioned in front of the drive wheels and rear anti-tip wheels positioned behind the drive wheels. One exemplary vehicle includes front anti-tip wheels supported by rigid arms that are fixed to the frame and drive assemblies that are independently suspended from the frame. Another exemplary vehicle includes a linkage that links the front and rear anti-tip wheels, such that movement of one ...
1. A wheelchair comprising: a frame;a seat supported by the frame;a first drive assembly comprising a first motor and a first drive wheel that is driven by the first motor;a first suspension assembly that couples the first drive assembly to the frame such that the first drive assembly is moveable relative to the frame;a second drive assembly comprising a second motor and a second drive wheel that is driven by the second motor;a second suspension assembly that couples the second drive assembly to the frame such that the second drive assembly is moveable r...