GB671107A - Improvements in or relating to canisters for self-contained breathing apparatus - Google Patents
Improvements in or relating to canisters for self-contained breathing apparatusInfo
- Publication number
- GB671107A GB671107A GB972350A GB972350A GB671107A GB 671107 A GB671107 A GB 671107A GB 972350 A GB972350 A GB 972350A GB 972350 A GB972350 A GB 972350A GB 671107 A GB671107 A GB 671107A
- Authority
- GB
- United Kingdom
- Prior art keywords
- canister
- layers
- tetroxide
- uncatalysed
- catalysed
- 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
- 230000029058 respiratory gaseous exchange Effects 0.000 title abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 2
- 229910052700 potassium Inorganic materials 0.000 abstract 2
- 239000011591 potassium Substances 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 230000000241 respiratory effect Effects 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B21/00—Devices for producing oxygen from chemical substances for respiratory apparatus
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
671,107. Respiratory appliances. MINE SAFETY APPLIANCES CO. April 20, 1950, No. 9723/50. Class 81 (ii). In a regenerating canister containing potassium tetroxide, a catalyst is combined theiewith only in the vicinity of the air inlet, preferably only about one fifth of the total being catalysed. Owing to the reduced rate of oxygen yield by the uncatalysed layers the total is approximately that required in use. In the preferred form of canister, made of copper lined iron, removal of a seal 5 allows two concentric breathing pipes to be attached to the neck 2, the inner exhalation pipe fitting into the mouth 6 of a tube 3 leading to the bottom of the canister. The air then passes through a filter pad 9, a layer 7 of catalysed potassium tetroxide, and through four layers of uncatalysed tetroxide before passing through a second filter pad 13 to the annular outlet and inhalation tube. The various layers are separated by gauze screens 11. U.S.A. Specifications 2,403,981 and 2,405,580 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB972350A GB671107A (en) | 1950-04-20 | 1950-04-20 | Improvements in or relating to canisters for self-contained breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB972350A GB671107A (en) | 1950-04-20 | 1950-04-20 | Improvements in or relating to canisters for self-contained breathing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB671107A true GB671107A (en) | 1952-04-30 |
Family
ID=9877522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB972350A Expired GB671107A (en) | 1950-04-20 | 1950-04-20 | Improvements in or relating to canisters for self-contained breathing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB671107A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1169615B (en) * | 1954-08-27 | 1964-05-06 | Draegerwerk Ag | Device for artificial ventilation, inhalation, anesthesia, etc. |
| FR2521034A1 (en) * | 1982-02-05 | 1983-08-12 | Air Liquide | POTASSIUM SUPEROXIDE COMPOSITIONS AND USES THEREOF |
| FR2544204A1 (en) * | 1983-04-12 | 1984-10-19 | Air Liquide | CHEMICAL OXYGEN BREATHING APPARATUS |
-
1950
- 1950-04-20 GB GB972350A patent/GB671107A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1169615B (en) * | 1954-08-27 | 1964-05-06 | Draegerwerk Ag | Device for artificial ventilation, inhalation, anesthesia, etc. |
| FR2521034A1 (en) * | 1982-02-05 | 1983-08-12 | Air Liquide | POTASSIUM SUPEROXIDE COMPOSITIONS AND USES THEREOF |
| EP0086138A2 (en) * | 1982-02-05 | 1983-08-17 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Potassium superoxide based compositions and their uses |
| EP0086138A3 (en) * | 1982-02-05 | 1983-09-21 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Potassium superoxide based compositions and their uses |
| US4490272A (en) * | 1982-02-05 | 1984-12-25 | Jean Malafosse | Compositions with a potassium superoxide base and their applications _ |
| FR2544204A1 (en) * | 1983-04-12 | 1984-10-19 | Air Liquide | CHEMICAL OXYGEN BREATHING APPARATUS |
| EP0125157A1 (en) * | 1983-04-12 | 1984-11-14 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Chemical oxygen generator for breathing equipment |
| US4717549A (en) * | 1983-04-12 | 1988-01-05 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxygen chemical generation respiration apparatus |
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