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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0729587 (1985-05-02) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 14 인용 특허 : 3 |
First and second pads are connected by a member which is wider at the bottom than at the top. Each pad has a ground engaging element associated therewith. A generally semi-spherical bearing is provided between each ground engaging element and its associated pad so that the pads may tilt and/or rotat
An amusement and/or exercising device comprising first and second pads spaced from each other, each pad being adapted to support one leg of a person, connecting means integral with the pads and having a ribbed cross section which resists twisting and which rigidly interconnects said pads, a discrete
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