Gas activated emergency vision device

• US 7,583,455 B2
• Filed: 03/18/2005
• Issued: 09/01/2009
• Est. Priority Date: 03/18/2005
• Status: Active Grant

• Current Assignee: VisionSafe Corp.
• Original Assignee: Bertil R.L. Werjefelt
• Inventors: Werjefelt, Bertil R. L.
• Primary Examiner(s): Mansen; Michael R
• Assistant Examiner(s): BROOKMAN, STEPHEN A
• Application Number:
  US11/083,091
• Publication Number:
  US 20060209441A1
• Time in Patent Office: 1,628 Days
• Field of Search: 244/118.5, 359/894, 359/895, 91/5, 92/78, 92/89, 92/90, 92/93, 92/94
• US Class Current: 359/894
• CPC Class Codes: A62B 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: G02B 23/20 Collapsible housings G02B23/18 takes precedence
• CPC Class Codes: G02B 27/04 having collapsible parts

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.

Claims

1. An emergency vision device, comprising:

a) a collapsible main tube made of airtight material having an expanded form and a deflated stowage form;

b) first and second clear members disposed at respective first and second ends of said main tube to enable a user to see through said main tube and observe a source of information at a distal end of said tube while smoke or other particulate matter is in the environment;

c) a filter disposed on said main tube to filter the ambient atmosphere and fill the interior of said main tube with clear air when said tube is expanded to its expanded form;

d) a network of tubes attached to said main tube;

e) a portable gas cylinder having compressed gas;

f) a valve assembly connected to said gas cylinder and having an outlet operably connected to the interior of said network of tubes;

g) said valve assembly being operable to release said gas to fill the interior of said network of tubes to expand said main tube to said expanded form, thereby drawing ambient air through said filter into said main tube;

h) a hollow handle operably secured to said main tube; and

i) said cylinder is disposed within said handle.

2. An emergency vision device as in claim 1, wherein said network of tubes is attached to an outside surface of said main tube.

3. An emergency vision device as in claim 1, and further comprising a closable port communicating with inside and outside of said network of tubes, said closable port when open allows the compressed gas within said network of tubes to be exhausted out when said main tube is compacted down to said deflated stowage form.

4. An emergency vision device as in claim 1, wherein said filter is a HEPA filter.

5. An emergency vision device as in claim 1, wherein said main tube is an airtight fabric.

6. An emergency vision device as in claim 1, wherein said clear members are plastic.

7. An emergency vision device as in claim 1, wherein said filter is disposed at one end of said tube.

8. An emergency vision device as in claim 1, wherein said filter is integrated with said main tube.

9. An emergency vision device as in claim 8, wherein said main tube is made of filter material.

10. An emergency vision device as in claim 8, wherein said filter is a HEPA filter.

11. An emergency vision device as in claim 1, wherein:

a) said network of tubes comprises first and second ring tubes disposed around the periphery of said first and second clear members, respectively;

b) a third ring tube disposed around said main tube between said first and second ring tubes; and

c) longitudinal tubes connecting said first, second and third ring tubes.

12. An emergency vision device as in claim 11, wherein said ring and longitudinal tubes are attached to an outside surface of said main tube.

13. An emergency vision device as in claim 11, wherein each of said ring tubes and longitudinal tubes has a cross-sectional area substantially smaller than the cross-sectional area of said main tube.

14. An emergency vision device as in claim 1, wherein said main tube and said network of tubes are made from the same material and integrated together into one unit.

15. An emergency vision device as in claim 1, wherein said main tube is transparent.

16. An emergency vision device as in claim 1, wherein said valve assembly includes a lever.