GB428259A - Improvements in or relating to respiratory and gas masks - Google Patents
Improvements in or relating to respiratory and gas masksInfo
- Publication number
- GB428259A GB428259A GB22102/34A GB2210234A GB428259A GB 428259 A GB428259 A GB 428259A GB 22102/34 A GB22102/34 A GB 22102/34A GB 2210234 A GB2210234 A GB 2210234A GB 428259 A GB428259 A GB 428259A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mask
- secured
- sealing element
- edge
- wall
- 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
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
428,259. Respiratory masks. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. July 28, 1934, No. 22102. Convention date, Aug. 23, 1933. [Class 81 (ii)] A gas-mask or airman's mask 1, covering the whole of the face and secured by straps 8, is characterized by a pneumatic sealing element 5 projecting inwardly from the wall of the mask and adapted to enclose and seal off the nose and mouth. The mask may be of leather, rubber, rubberized fabric, transparent sheet material or metal and may be provided with glass or celluloid windows 5 in which case the edge of the mask is formed with an additional seal 2 of smooth soft rubber strip. Alternatively the mask may be open opposite the eyes, the edge in this case being cushioned by a lining of sponge rubber or by being rolled inwardly. The pneumatic sealing element may be made inflatable and deflatable by the provision of an inflating bulb with a manually operable leak valve, and may be secured to or moulded into the wall of the mask.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT428259X | 1933-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB428259A true GB428259A (en) | 1935-05-09 |
Family
ID=11254465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22102/34A Expired GB428259A (en) | 1933-08-23 | 1934-07-28 | Improvements in or relating to respiratory and gas masks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB428259A (en) |
-
1934
- 1934-07-28 GB GB22102/34A patent/GB428259A/en not_active Expired
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