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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0172900 (1993-12-27) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 7 인용 특허 : 0 |
A foldable bed includes four posts each having two or more holes, a block slidably engaged on each of the posts, four rods coupled between the blocks and the blocks, a disc slidably received in each of the blocks, a shaft extended through each of the discs and having one end engagable with the holes
A foldable bed comprising an upper frame including four first bars each having a first joint provided in a middle portion and having end portions coupled together by four second joints, a lower frame including four beams each having a third joint provided in a middle portion and having end portions
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