发明名称 Device for the accelerated launching of light sails
摘要 Device for accelerating the launching of light sails comprising a set of smooth rings encircling the furled sail at intervals along its length and an elastic spacing line extending between the rings and between the uppermost ring and the top of the sail.
申请公布号 US4270477(A) 申请公布日期 1981.06.02
申请号 US19780940166 申请日期 1978.09.07
申请人 FRETWELL, JR., JACK W. 发明人 FRETWELL, JR., JACK W.
分类号 B63H9/10;(IPC1-7):B63H9/10 主分类号 B63H9/10
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