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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0072635 (1979-09-06) |
우선권정보 | NO-0003089 (1978-09-13) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 17 인용 특허 : 1 |
In a vertical telescopic device having an inner tube which carries a load such as from the seat of a chair and is adjustably mounted in an outer tube and adapted to be locked to the same by rolling elements releasably spring loaded from below and wedged between the outer tube and downwardly tapering
Ajustable telesocpic device designed for substantially vertical mounting, in which an inner tube is slidably inserted in an outer tube and projects upwards from the same and is adapted to carry a load, for example from a chair seat, and to be locked at its lower end to the outer tube by frictional a
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