Patent ID: 6460804
Filing Date: 2002-10-08
Classification: B64C,B64D,G02B

Abstract:
An emergency supplementary vision device, comprising:a) a collapsible tube made of airtight material and having an expanded form and a compact stowed form; b) first and second clear members disposed at respective first and second ends of said 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; c) a filter operably associated with said 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; and d) a flexible support operably secured to the tube, extending from one end of said tube to the other end, adapted to expand said tube to its expanded form and thereby to draw ambient air through said filter into said tube, and said flexible support being adapted to be collapsible when said tube is collapsed to its compact stowed form.