发明名称 Water funnel
摘要 A diving bell having a first funnel-shaped member which has a cone-shaped portion with a cylindrical portion projecting from an apex-most portion of the cone-shaped portion. A lid for sealing and unsealing egress and passage of air and water through opposite ends of the cylindrical portion of the first funnel-shaped member. A second funnel-shaped member having a cone-shaped portion with a cylindrical portion projects from an apex-most portion of the cone-shaped portion. The second funnel-shaped member being held about the first funnel-shaped member with a space between the first and second funnel-shaped members for receiving sand or the like.
申请公布号 US5639186(A) 申请公布日期 1997.06.17
申请号 US19930088666 申请日期 1993.07.06
申请人 FERRARI, LORENZO;FERRARI, RENZO 发明人 FERRARI, LORENZO;FERRARI, RENZO
分类号 B63C11/34;E02D29/00;(IPC1-7):B63C11/38 主分类号 B63C11/34
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