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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0248405 (1981-03-27) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 108 인용 특허 : 1 |
A mobile self-propelled chair includes a frame having at its top a pivotally mounted passenger seat and captively mounting for rotation about various possible axes a relatively large sphere, which supports the principal weight of the chair and user. Auxiliary support is provided by casters surroundi
A compact mobile self-propelled chair including a frame carrying a passenger seat and a prime mover and characterized by a spherical body for carrying at least in part the weight of said chair and passenger and providing frictional rolling engagement with a support surface, means for captively mount
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