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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0309928 (1981-10-09) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 22 인용 특허 : 1 |
The coaster includes a wheeled foot platform, the steerable wheel of which is rotatable on a swiveled axle for effecting a steering action. The swiveled axle extends through aligned horizontal slots in vertical axle guides where are spherically curved. Each axle guide has at least one axially extend
A coaster comprising a foot platform, front and rear platform supporting wheels mounted on said platform for rotation about their respective rotational axes, one of said wheels further being mounted on said platform for pivotal steering movement, a foot steerable member supported on said platform fo
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