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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0682085 (1976-04-30) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 26 인용 특허 : 3 |
A high speed ground transportation system, is suspended in an underground vacuum tube by a frictionless magnetic suspension system and propelled by gravity. The tubes are suspended inside deep underground tunnels from anchor points near each adjacent station and follow smooth catenary curves similar
A rapid transit system comprising: a plurality of stations; an underground tube which slopes downwardly along a smooth curve between a pair of adjacent stations of said system; means for evacuating and maintaining vacuum in the tube; a vehicle in the tube; means for levitating said vehicle by a magn
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