GB550860A - Means for breathing mixtures of gases at low temperatures - Google Patents
Means for breathing mixtures of gases at low temperaturesInfo
- Publication number
- GB550860A GB550860A GB5692/40A GB569240A GB550860A GB 550860 A GB550860 A GB 550860A GB 5692/40 A GB5692/40 A GB 5692/40A GB 569240 A GB569240 A GB 569240A GB 550860 A GB550860 A GB 550860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sponge rubber
- mask
- face
- gases
- low temperatures
- 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
- A62B7/00—Respiratory apparatus
- A62B7/12—Respiratory apparatus with fresh-air hose
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
550,860. Respiratory appliances. BOOTHBY, W. M. March 29, 1940, No. 5692. Convention date, Dec. 14, 1939. [Class 81 (ii)] A mask adapted for the breathing of mixtures of gases and for use in low temperatures, e.g. an oxygen mask, is provided with an opening communicating with the atmosphere occluded by a body of porous non-conducting material e.g. sponge rubber. A layer of sponge rubber may also be attached at the face engaging parts of the mask 20 that it is interposed between the mask body and the face. In a construction shown in Figs. 1 and 7 a body of sponge rubber 35 is disposed in a turret-like extension 32 below which is a tube 23 carrying a rebreathing bag 26 into which extends an oxygen supply pipe 41. In a form shown in Fig. 10 the outlet to atmosphere is constituted by perforations 54, in a tube 53, which are surrounded by a sponge rubber sleeve 55. A sheet of sponge rubber 106 may be provided as shown in Fig. 1 to provide a non-conducting bearing surface for the face of the wearer. Specifications 551,608 and 551,609 are referred to
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US550860XA | 1939-12-14 | 1939-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB550860A true GB550860A (en) | 1943-01-28 |
Family
ID=21995490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5692/40A Expired GB550860A (en) | 1939-12-14 | 1940-03-29 | Means for breathing mixtures of gases at low temperatures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB550860A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008114235A1 (en) * | 2007-03-16 | 2008-09-25 | Catesby Olivia | Oxygen mask |
| CN110559566A (en) * | 2018-06-06 | 2019-12-13 | 郑贞大 | Dust-proof mask |
-
1940
- 1940-03-29 GB GB5692/40A patent/GB550860A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008114235A1 (en) * | 2007-03-16 | 2008-09-25 | Catesby Olivia | Oxygen mask |
| GB2463172A (en) * | 2007-03-16 | 2010-03-10 | Ian Edward Atkins | Oxygen mask |
| CN110559566A (en) * | 2018-06-06 | 2019-12-13 | 郑贞大 | Dust-proof mask |
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