GB764111A - Face mask for under-water breathing - Google Patents
Face mask for under-water breathingInfo
- Publication number
- GB764111A GB764111A GB568/55A GB56855A GB764111A GB 764111 A GB764111 A GB 764111A GB 568/55 A GB568/55 A GB 568/55A GB 56855 A GB56855 A GB 56855A GB 764111 A GB764111 A GB 764111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mask
- air
- face
- breathing
- jan
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/18—Air supply
- B63C11/22—Air supply carried by diver
- B63C11/2227—Second-stage regulators
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
764,111. Respiratory appliances. SVENSKA AKTIEBOLAGET GASACCUMULATOR. Jan. 7, 1955 [Jan. 7, 1954], No. 568/55. Class 81(2) [Also in Group XXIX] An under-water breathing mask is formed as an outer mask 10, enclosing the front of the face and having a single flat window 15, which is provided with an inner mask 22 to fit closely around the nose and mouth and connected directly to the breathing equipment through a tube 21 and connecting piece 16. Small holes 23, 24 are provided in the wall of the inner mask to allow equalization of pressure between the two masks and are so placed that the movement of air into and out of the inner mask during breathing causes a small proportion of air to circulate in the outer mask. A control valve suitable for use with the mask is described with reference to Fig. 3 and comprises a pressure sensitive diaphragm 37, the outer face of which is exposed to the ambient pressure, and which carries the exhalation valve 38 at its centre. This is interconnected by a lever 41 with the inlet valve 40 so that it is impossible for both to be open together. Air is supplied through a connection 44, enclosing a filter 42, and whole assembly is mounted on the face mask by means of a short tubular outlet 30.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE764111X | 1954-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB764111A true GB764111A (en) | 1956-12-19 |
Family
ID=20329947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB568/55A Expired GB764111A (en) | 1954-01-07 | 1955-01-07 | Face mask for under-water breathing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB764111A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716053A (en) * | 1970-03-12 | 1973-02-13 | Aga Ab | Breathing apparatus |
| EP0014290A1 (en) * | 1978-12-13 | 1980-08-20 | Siebe Gorman & Company Limited | Valve assembly and breathing apparatus incorporating this valve assembly |
| GB2169209A (en) * | 1984-11-23 | 1986-07-09 | Gas Serv Offshore Ltd | Secondary life support system |
-
1955
- 1955-01-07 GB GB568/55A patent/GB764111A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716053A (en) * | 1970-03-12 | 1973-02-13 | Aga Ab | Breathing apparatus |
| EP0014290A1 (en) * | 1978-12-13 | 1980-08-20 | Siebe Gorman & Company Limited | Valve assembly and breathing apparatus incorporating this valve assembly |
| GB2169209A (en) * | 1984-11-23 | 1986-07-09 | Gas Serv Offshore Ltd | Secondary life support system |
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