GB801604A - Improvements in or relating to breathing apparatus - Google Patents
Improvements in or relating to breathing apparatusInfo
- Publication number
- GB801604A GB801604A GB1368956A GB1368956A GB801604A GB 801604 A GB801604 A GB 801604A GB 1368956 A GB1368956 A GB 1368956A GB 1368956 A GB1368956 A GB 1368956A GB 801604 A GB801604 A GB 801604A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- oxygen
- altitudes
- air
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
- A62B9/022—Breathing demand regulators
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
801,604. Respiratory appliances. NORMCLAIR, Ltd. April 26, 1957 [May 3, 1956], No. 13689/56. Class 81 (2). In order to avoid loss of oxygen at low altitudes and to admit atmospheric air to an aircraft breathing mask when no oxygen is required a light, flap valve 16 is mounted on the regulator diaphragm 3. This has less flow resistance than the oxygen valve mechanism 12 and opens at low altitudes to pass air through ports 18 to pipe 7 and mask 6. At greater altitudes known mechanism operating on the diaphragm causes oxygen to be supplied at positive pressure, which causes the valve 16 to be held closed continuously. At such altitudes, oxygen passed by valve 11 operates in a venturi arrangement to draw air through an aneroidcontrolled valve 13 in accordance with the proportion necessary. In a second embodiment a non-return valve is fitted into a pipe leading into the flexible pipe 7, so that again air may be freely drawn in at low altitudes, but the valve is held closed by excess pressure at greater heights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1368956A GB801604A (en) | 1956-05-03 | 1956-05-03 | Improvements in or relating to breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1368956A GB801604A (en) | 1956-05-03 | 1956-05-03 | Improvements in or relating to breathing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB801604A true GB801604A (en) | 1958-09-17 |
Family
ID=10027621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1368956A Expired GB801604A (en) | 1956-05-03 | 1956-05-03 | Improvements in or relating to breathing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB801604A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182152A (en) * | 2013-04-03 | 2013-07-03 | 抚顺抚运安仪救生装备有限公司 | Positive pressure air respirator for emergency rescue |
-
1956
- 1956-05-03 GB GB1368956A patent/GB801604A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182152A (en) * | 2013-04-03 | 2013-07-03 | 抚顺抚运安仪救生装备有限公司 | Positive pressure air respirator for emergency rescue |
| CN103182152B (en) * | 2013-04-03 | 2016-01-20 | 抚顺抚运安仪救生装备有限公司 | Emergency management and rescue positive-pressure air respirator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3526241A (en) | Oxygen-air diluter for breathing apparatus | |
| GB944932A (en) | Improvements in or relating to breathing apparatus | |
| GB801604A (en) | Improvements in or relating to breathing apparatus | |
| GB910065A (en) | Improvements in or relating to respiratory valves | |
| US2814290A (en) | Respiratory apparatus | |
| GB897531A (en) | Improvements in or relating to breathing masks | |
| GB1092818A (en) | A respiratory apparatus | |
| GB724801A (en) | Improvements in or relating to protective oxygen respirators providing circulation of the respiration air | |
| GB837355A (en) | Breathing mask construction | |
| GB843586A (en) | Respiratory device | |
| GB992428A (en) | Improvements in or relating to respiratory apparatus for use in closed-circuit respiration | |
| GB912418A (en) | Improvements in or relating to masks | |
| GB907390A (en) | Differential gas supplying apparatus | |
| GB885353A (en) | Pressure regulating system | |
| GB1222989A (en) | Oxygen and air mixer for breathing apparatus | |
| GB814427A (en) | Improvements in volatile anaesthetic vaporising apparatus | |
| ES263100A1 (en) | Improvements in demand regulators for breathing apparatus | |
| GB940581A (en) | A valve assembly for breathing apparatus | |
| GB764111A (en) | Face mask for under-water breathing | |
| GB895373A (en) | Oxygen supply system | |
| GB783434A (en) | Improvements in and relating to breathing apparatus | |
| GB847754A (en) | Improvements in breathing apparatus | |
| GB1286839A (en) | Valve for use in conjunction with a positive pressure flow cut-off respiration system | |
| GB763804A (en) | Improvements in or relating to breathing apparatus | |
| GB981128A (en) | Improvements in or relating to breathing apparatus |