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    • 9. 发明申请
    • Emergency vision apparatus
    • 紧急视力仪器
    • US20010045493A1
    • 2001-11-29
    • US09769754
    • 2001-01-26
    • Bertil R.L. Werjefelt
    • B64D011/00B64D013/00
    • B64D25/00B64C1/1476G02B7/007
    • An emergency supplementary vision device comprises a collapsible tube made of airtight material and having an expanded form and a compact stowed form; first and second clear members disposed at respective first and second ends of the tube to enable the user to see through said tube and observe a source of information at the other end while smoke or other particulate matter is in the environment; and a filter operably associated with the tube to filter the ambient atmosphere and fill the interior of said tube with clear air when said tube is expanded to its expanded form.
    • 紧急补充视觉装置包括由气密材料制成并具有膨胀形式和紧凑收纳形式的可折叠管; 第一和第二透明构件设置在管的相应的第一和第二端处,以使得使用者能够透视所述管并且在烟雾或其它颗粒物质处于环境中的同时观察另一端的信息源; 以及与所述管可操作地相关联的过滤器以过滤所述环境大气并且当所述管膨胀到其膨胀形式时用清空的空气填充所述管的内部的过滤器。