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2. 发明授权

US4925417A Underwater viewing paddle board 失效
标题翻译：水下观察板
公开(公告)号：US4925417A
公开(公告)日：1990-05-15
申请号：US247687
申请日：1988-09-22
申请人： John R. Warren
发明人： John R. Warren
IPC分类号： B63C11/48
CPC分类号： B63C11/49
摘要： An apparatus for underwater surveillance that consists of a floating platform having bow and stern with an aerodynamically true forward cowl formed on the bow end, the forward approximately one-third of the platform. Immediately aft of the cowl there is disposed a viewing assembly placed in a clearance formed centrally through the platform, and the viewing assembly is a tightly sealed transparent member having top panel, bottom panel and side panel and defining a volume that is maintained liquid free thereby to enable maximum viewing efficiency at all times.
摘要翻译：一种用于水下监视的装置，包括具有弓形和船尾的浮动平台和在弓形端上形成的空气动力学真正的前罩，前部约为平台的三分之一。立即在整流罩的后方设置一个观察组件，放置在通过平台中心形成的间隙中，并且观察组件是具有顶板，底板和侧板的紧密密封的透明构件，并限定保持无液体的体积以始终保持最大的观看效率。

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