GB1427400A - Compressed gas breathing apparatus - Google Patents
Compressed gas breathing apparatusInfo
- Publication number
- GB1427400A GB1427400A GB3569073A GB3569073A GB1427400A GB 1427400 A GB1427400 A GB 1427400A GB 3569073 A GB3569073 A GB 3569073A GB 3569073 A GB3569073 A GB 3569073A GB 1427400 A GB1427400 A GB 1427400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- gas
- pressure
- seat
- conduit
- 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
- 239000002184 metal Substances 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
Abstract
1427400 Fluid-pressure servomotor systems MINE SAFETY APPLIANCES CO 26 July 1973 [25 Oct 1972] 35690/73 Heading G3P [Also in Divisions A5 and F2] Breathing apparatus Fig. I, (not shown) wherein gas is normally provided to a facepiece (2) from a compressed gas source (1) via a conduit (4), pressure reducing valve (3), conduit (6), control valve 7, conduit (8), and demand valve (9), is arranged such that an emergency loss of pressure at the gas source 1 communicates via conduit (12) to close valve 7 and the user inhales through an alarm valve 30 which provides a pulse of gas when the gas pressure falls below the predetermined value to signal the user that the control valve has closed. The control valve, Fig. 2, includes a port 17 and seat 18 between the inlet and outlet 26 of the valve, a closure member 22 and closure spring 23, the supply pressure (1) actuating a piston 13 connected with said closure member 22 the spring force being adjustable to alter the critical pressure valve of the supply gas. A stem 15 fixed to the piston 13 and closure member 22 extends through the port 17 and is enclosed by spring 23 which is compressed between the closure member and a collar 24 threaded on to the stem. The alarm valve 30, Fig. 3, includes a valve seat and a valve outlet 36, a diaphragm 37 therebetween and held against the seat by the predetermined gas pressure, a check valve 51 and a seat 53 normally engaging with a flexible valve disc 54 and stem 55 plugged into the check-valve bore 52. Compressed between the front flange 43 of sleeve 42 and the rear wall of the chamber is a coil spring 56 urging sleeve and metal disc 39 to close the valve. When gas pressure falls below the critical value, control valve 7 closes, and inhalation reduces, the pressure in conduits (8) and (32) causing support diaphragm 37 and disc 39 to move rearwardly against the coil spring 56, moving check-valve seat 53, allowing the gas pressure behind diaphragm 45 to drop and admit gas from inlet 35 to the outlet 36.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30146172A | 1972-10-25 | 1972-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1427400A true GB1427400A (en) | 1976-03-10 |
Family
ID=23163471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3569073A Expired GB1427400A (en) | 1972-10-25 | 1973-07-26 | Compressed gas breathing apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3776422A (en) |
| JP (1) | JPS5717541B2 (en) |
| CA (1) | CA971854A (en) |
| FR (1) | FR2204970A5 (en) |
| GB (1) | GB1427400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2201096A (en) * | 1987-02-13 | 1988-08-24 | Sabre Safety Ltd | Emergency escape breathing apparatus |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4199006A (en) * | 1978-02-28 | 1980-04-22 | The United States Of America As Represented By The Secretary Of The Navy | Pneumatic valve |
| US5881725A (en) * | 1997-08-19 | 1999-03-16 | Victor Equipment Company | Pneumatic oxygen conserver |
| AU2000234327A1 (en) * | 2000-03-29 | 2001-10-08 | Martin Nordhorn | Security device for a gas supply device, especially a compressed air supply device, and the use of said security device for configuring a security fitting |
| US6364161B1 (en) | 2000-09-27 | 2002-04-02 | Victor Equipment Company | Oxygen conserver |
| CN103028173A (en) * | 2011-09-29 | 2013-04-10 | 北京航天长峰股份有限公司 | Pneumatic alarm device |
| JP7063805B6 (en) | 2015-10-30 | 2022-06-06 | コーニンクレッカ フィリップス エヌ ヴェ | Breathing training, observation and / or assistive devices |
| CN108472464B (en) | 2015-10-30 | 2021-04-02 | 皇家飞利浦有限公司 | Respiratory training, monitoring and/or assistance device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3524424A (en) * | 1967-05-03 | 1970-08-18 | Automatic Sprinkler Corp | Low pressure alarm |
| US3584596A (en) * | 1968-12-05 | 1971-06-15 | Ato Inc | Low pressure warning device |
| US3594745A (en) * | 1969-05-08 | 1971-07-20 | Norgren Co C A | Valve for signaling three conditions |
-
1972
- 1972-10-25 US US00301461A patent/US3776422A/en not_active Expired - Lifetime
-
1973
- 1973-07-18 CA CA176,749A patent/CA971854A/en not_active Expired
- 1973-07-26 GB GB3569073A patent/GB1427400A/en not_active Expired
- 1973-08-02 JP JP8646873A patent/JPS5717541B2/ja not_active Expired
- 1973-08-23 FR FR7330607A patent/FR2204970A5/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2201096A (en) * | 1987-02-13 | 1988-08-24 | Sabre Safety Ltd | Emergency escape breathing apparatus |
| GB2201096B (en) * | 1987-02-13 | 1990-09-19 | Sabre Safety Ltd | Emergency escape breathing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| US3776422A (en) | 1973-12-04 |
| DE2344150B2 (en) | 1976-02-05 |
| JPS4973892A (en) | 1974-07-17 |
| FR2204970A5 (en) | 1974-05-24 |
| JPS5717541B2 (en) | 1982-04-12 |
| DE2344150A1 (en) | 1974-05-02 |
| CA971854A (en) | 1975-07-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |