Invention Grant
- Patent Title: Gas activated emergency vision device
- Patent Title (中): 气体启动应急视觉装置
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Application No.: US12461843Application Date: 2009-08-26
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Publication No.: US08213101B2Publication Date: 2012-07-03
- Inventor: Bertil R. L. Werjefelt
- Applicant: Bertil R. L. Werjefelt
- Agency: Shlesinger, Arkwright & Garvey LLP
- Main IPC: G02B5/00
- IPC: G02B5/00 ; G02B7/00 ; G02B27/00

Abstract:
An emergency vision device, comprises a collapsible tube made of airtight material and having an expanded form and a deflated stowage form; first and second clear members disposed at respective first and second ends of the tube to enable a user to see through the tube and observe a source of information at a distal end of the tube while smoke or other particulate matter is in the environment; and a portable gas cylinder having compressed clear gas and an outlet operably connected to the interior of the tube. The gas cylinder is operable to release the clear gas to fill the interior of the tube to expand the tube to the expanded form.
Public/Granted literature
- US20090316390A1 Gas activated emergency vision device Public/Granted day:2009-12-24
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