GB602187A - Oxygen demand pressure breathing regulator - Google Patents
Oxygen demand pressure breathing regulatorInfo
- Publication number
- GB602187A GB602187A GB24030/45A GB2403045A GB602187A GB 602187 A GB602187 A GB 602187A GB 24030/45 A GB24030/45 A GB 24030/45A GB 2403045 A GB2403045 A GB 2403045A GB 602187 A GB602187 A GB 602187A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- spring
- regulator
- flexible wall
- lever
- 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
602,187. Respiratory apparatus. GARRETT CORPORATION. Sept. 18, 1945, No. 24030. Convention date, Sept. 4, 1944. [Class 81(ii)] [Also in Group XXIX] An oxygen; regulator for aviators' breathing apparatus, shown schematically in Fig. 8, comprises a casing 14 with a flexible wall 17, protected by an apertured cover plate 18, an oxygen inlet valve 20 opened by the inward movement of the wall 17, an opening communicating with the mask, an exhalation valve 63, and a leverage system 66, 68, 70 transmitting pressure exerted by spring 78 to move the flexible wall inwardly and to close the exhalation valve, the distances between the points of application of forces F, F2 and F, F3 being inversely proportional to the areas of the flexible wall and exhalation valve respectively, whereby the latter are co-ordinated throughout the range of adjustment. This adjustment is altered by variation of the tension of spring 78. The following figures show the actual construction of the regulator. In Fig. 4, spring 78 is connected at one end to the arm 80 of an adjusting knob 82 formed with a spring- pressed detent member 83, and at the other to a pivoted arm 75 bearing through adjusting screw 77 onto the bell crank lever 70 of the leverage system. The oxygen inlet valve assembly, Figs. 5 and 7, comprises a chamber 24 communicating through passages 37 in valve seat 36 with the interior of the regulator casing, and a front spring-urged valve member 32 and gasket 34. A rear valve member 28, seating against gasket 31 screws into member 32 and is frictionally held by fingers 40. Valve stem 43 is engaged by lever 44, Fig. 5. actuated by pin 56 disposed in the stem 54 connected to diaphragm 17, the lever 44 being pivoted in a bracket 48 adjusted by means of screw 52.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US602187XA | 1944-09-04 | 1944-09-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB602187A true GB602187A (en) | 1948-05-21 |
Family
ID=22028102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24030/45A Expired GB602187A (en) | 1944-09-04 | 1945-09-18 | Oxygen demand pressure breathing regulator |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB602187A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0254548A2 (en) * | 1986-07-23 | 1988-01-27 | Helmets Limited | Improvements in gaseous fluid flow valves |
EP0814872A1 (en) * | 1995-03-23 | 1998-01-07 | Safety Equipment Australia Pty. Ltd. | Powered air-purifying respirator management system |
-
1945
- 1945-09-18 GB GB24030/45A patent/GB602187A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0254548A2 (en) * | 1986-07-23 | 1988-01-27 | Helmets Limited | Improvements in gaseous fluid flow valves |
GB2192794A (en) * | 1986-07-23 | 1988-01-27 | Helmets Ltd | Improvements in gaseous fluid flow valves |
EP0254548A3 (en) * | 1986-07-23 | 1989-04-26 | Helmets Limited | Improvements in gaseous fluid flow valves |
GB2192794B (en) * | 1986-07-23 | 1990-05-16 | Helmets Ltd | Improvements in gaseous fluid flow valves |
EP0814872A1 (en) * | 1995-03-23 | 1998-01-07 | Safety Equipment Australia Pty. Ltd. | Powered air-purifying respirator management system |
EP0814872A4 (en) * | 1995-03-23 | 2001-07-11 | Safety Equipment Sweden Ab | Powered air-purifying respirator management system |
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