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 Title: |
US5163422:
Breathing apparatus for providing a source of breathable air in a burning structure
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Burgess, Paul D.; Boca Raton, FL 33432
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| Assignee: |
None
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| Published / Filed: |
1992-11-17
/ 1991-09-30
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| Application Number: |
US1991000769186
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| IPC Code: |
Advanced:
A62B 7/12;
A62B 9/00;
Core:
A62B 7/00;
more...
IPC-7:
A61M 15/00;
A62B 17/04;
A62B 18/02;
A62B 23/02;
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| U.S. Class: |
Current:
128/200.24;
128/201.24;
128/201.25;
128/205.25;
Original:
128/200.24;
128/201.24;
128/201.25;
128/205.25;
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| Field of Search: |
128/200.24,201.25,201.26,204.18,204.26,205.12,205.21,205.25,206.12,201.24
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| Priority Number: |
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| Abstract: |
A breathing apparatus for providing a source of breathable air in a burning structure for the firefighters or occupants trapped in the burning structure includes a hollow body member connected to a hollow piercing means for penetrating a wall of the structure. The piercing means provides orifices for receiving breathable air from an interior cavity of the wall. The breathing apparatus can be equipped with a one-way valve for permitting the transfer of air from the wall cavity to the user but prohibiting the back flow of smoke or other contaminated air through the apparatus to the clean air disposed in the wall cavity. The apparatus can also be equipped with a locking thread for securely engaging the apparatus with the pierced wall and providing sealing engagement of an annular sealing ring with the wall.
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| Attorney, Agent or Firm: |
Quarles & Brady ;
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| Primary / Asst. Examiners: |
Burr, Edgar S.; Asher, Kimberly L.
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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| Parent Case: |
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation in part of U.S. patent application, Ser. No. 679,741, filed Apr. 3, 1991, now U.S. Pat. No. 5,109,836.
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| Family: |
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First Claim:
Show all 7 claims |
I claim:
1. A breathing apparatus for retrieving breathable air from a wall cavity in a burning building, said apparatus comprising:
- a hollow body member;
- a hollow piercing means operatively connected to said hollow body, said piercing means including a plurality of orifices for receiving air within the wall cavity into said hollow body, said hollow body providing an outlet port for allowing passage of air out of said hollow body to a user; and
- valve means operatively connected to said outlet port for allowing passage out of said hollow body but prohibiting back flow of smoke and air into said hollow body.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
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