GB1092309A - Improvements in or relating to breathing apparatus - Google Patents
Improvements in or relating to breathing apparatusInfo
- Publication number
- GB1092309A GB1092309A GB3605365A GB3605365A GB1092309A GB 1092309 A GB1092309 A GB 1092309A GB 3605365 A GB3605365 A GB 3605365A GB 3605365 A GB3605365 A GB 3605365A GB 1092309 A GB1092309 A GB 1092309A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- mask
- return system
- force component
- alone
- 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
-
- 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
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
1,092,309. Respiratory masks. SOC. DE FABRICATION D'INSTRUMENTS DE MESURE (S.F.I.M.) Aug. 23, 1965 [Dec. 31, 1964], No. 36053/65. Heading A5T. A breathing apparatus for aircrews, as illustrated with reference to the drawings, includes a mask 1 having an exhalation valve 4 and an elastic return system urging the valve towards its closing position, wherein the force which the return system applies to the valve and which must be overcome by the pressure within the mask before the valve opens has a first constant force component given by a spring 35 alone, said spring being independent of any gas pressure, to which first force component, above a predetermined altitude limit, is added a second variable force component directly proportional to the magnitude of the supply excess pressure required in the mask. The second component of the return system may be obtained by providing a chamber with an elastically deformable wall 44 which is connected through a pipe 41, 42 to an excess pressure take-off, i.e. chamber 16 and bellows 17. Figure 2 shows the exhalation valve alone and Figure 1 shows the assembly of mask, exhalation valve and the damping and variableflexibility return device associated with the valve.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR522A FR1427955A (en) | 1964-12-31 | 1964-12-31 | Improvements made to oxygen dispensing devices for flight attendants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1092309A true GB1092309A (en) | 1967-11-22 |
Family
ID=8566985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3605365A Expired GB1092309A (en) | 1964-12-31 | 1965-08-23 | Improvements in or relating to breathing apparatus |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1427955A (en) |
| GB (1) | GB1092309A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415325A (en) * | 2011-02-21 | 2013-11-27 | 联合技术公司 | Aircraft demand regulator and dilution regulation method |
-
1964
- 1964-12-31 FR FR522A patent/FR1427955A/en not_active Expired
-
1965
- 1965-08-23 GB GB3605365A patent/GB1092309A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415325A (en) * | 2011-02-21 | 2013-11-27 | 联合技术公司 | Aircraft demand regulator and dilution regulation method |
| CN103415325B (en) * | 2011-02-21 | 2016-11-16 | 佐迪埃克航空技术公司 | Aircraft flow regulator and dilution control method |
| US10137318B2 (en) | 2011-02-21 | 2018-11-27 | Zodiac Aerotechnics | Aircraft demand regulator and dilution regulation method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1427955A (en) | 1966-02-11 |
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