发明名称 Buoy with self-ejecting weight
摘要 A surface buoy. The buoy includes top and bottom flotation members of hemispherical configuration and a reel member positioned between them. An elongate flexible cord is coiled about the reel member and has a first end secured thereto. A second end of the cord is secured to a weight member. The top flotation member has a nest-like recess formed therein into which the weight member is positioned when the buoy is not in use. When the buoy is tossed into a body of water, the bobbing action of the buoy throws the weight out of its nest and into the water. As the weight sinks, it uncoils the cord from the reel member until it reaches the bottom of the body of water, at which time further uncoiling of the cord stops.
申请公布号 US4976641(A) 申请公布日期 1990.12.11
申请号 US19900491031 申请日期 1990.03.09
申请人 D'AMICO, DENNIS 发明人 D'AMICO, DENNIS
分类号 B63B22/00 主分类号 B63B22/00
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