GB215326A - Improvements in respiratory appliances for personal use - Google Patents
Improvements in respiratory appliances for personal useInfo
- Publication number
- GB215326A GB215326A GB7488/24A GB748824A GB215326A GB 215326 A GB215326 A GB 215326A GB 7488/24 A GB7488/24 A GB 7488/24A GB 748824 A GB748824 A GB 748824A GB 215326 A GB215326 A GB 215326A
- Authority
- GB
- United Kingdom
- Prior art keywords
- absorbent materials
- filtering
- air
- container
- strainer
- 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
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
215,326. Soc d'Etudes et de Construction de MatÚriel de Protection. May 1, 1923, [Convention date]. Respirators. - In a respiratory apparatus in which the air to be breathed is purified by passage through filtering and. absorbent materials, the layer of filtering material has a corrugated or pleated shape, and the outlet passages which conduct the purified air to the mask are so arranged as to compel the air to follow a sinuous path through the filtering and absorbent materials. To the bottom of the container 1 is secured an inner container 3 made of corrugated metal netting to the outside of which the filtering material 5 is attached, being firmly held by flanges 6, 6<1>. A strainer 7 protected with cotton gauze is fixed at the centre of the container 3, the strainer having a number of holes 9 the diameter of which increases from the top downwards. The absorbent materials 10 are held between the strainer 7 and the wall of the container 3, and are kept in place by springs 11. The absorbent materials may comprise a mixture of activated carbon and basic granulated materials or these may be used separately, being separated by a perforated longitudinal partition (not shown). Dust from the absorbent materials is prevented from reaching the tubes 17, 18 leading to the mask by a filtering layer 15. The tubes 17, 18 are connected by a readily closable union so that air is inhaled directly when the union is open, and through the container 3 when the union is closed. In the latter case air is drawn through the inlets 2 and passes through the filtering layer 5 and absorbent materials 10 to the strainer 7 and tube 17 by way of the holes 7 and tube 17 by way of the holes 9. These holes being of varying diameter, as described above, the air follows a curved downward path, as shown by the arrow f<1>, while passing through the filtering and absorbent materials.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR215326X | 1923-05-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB215326A true GB215326A (en) | 1924-12-18 |
Family
ID=8881160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7488/24A Expired GB215326A (en) | 1923-05-01 | 1924-03-24 | Improvements in respiratory appliances for personal use |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB215326A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4218945A1 (en) * | 2022-01-28 | 2023-08-02 | MANN+HUMMEL Vokes Air GmbH & Co. OHG | Filter element for a breathing apparatus, filter device, breathing apparatus, and use of a filter element |
-
1924
- 1924-03-24 GB GB7488/24A patent/GB215326A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4218945A1 (en) * | 2022-01-28 | 2023-08-02 | MANN+HUMMEL Vokes Air GmbH & Co. OHG | Filter element for a breathing apparatus, filter device, breathing apparatus, and use of a filter element |
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