GB857661A - Breathing apparatus - Google Patents
Breathing apparatusInfo
- Publication number
- GB857661A GB857661A GB3311456A GB3311456A GB857661A GB 857661 A GB857661 A GB 857661A GB 3311456 A GB3311456 A GB 3311456A GB 3311456 A GB3311456 A GB 3311456A GB 857661 A GB857661 A GB 857661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supply chamber
- exhalation
- mask
- inhalation
- gas
- 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
- B63C11/2236—Functionally interdependent first/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
857,661. Respiratory appliances. HAMPTON, T. A. Oct. 16, 1957 [Oct. 30, 1956], No. 33114/56. Class 81(2) Breathing apparatus comprises a mask or mouthpiece, a housing 4 divided by a flexible diaphragm 6 into a supply chamber 7, which is connected to a source of compressed gas, and a pressure balance chamber 8, which is connected to an exhalation valve 19 and to an air reservoir 18, and a valve 13 biassed to prevent entry of gas to the supply chamber and operatively connected to the diaphragm. The pressure balance chamber and the gas supply chamber are connected to the mask or mouthpiece by flexible exhalation and inhalation tubes 10, 9 respectively. On inhalation of the wearer, the diaphragm 6 is moved inwardly of the gas supply chamber 7 and moves the element 13 which is pivotally mounted against a spring 15 to allow compressed gas to enter the supply chamber. The air reservoir comprises a corrugated tube, which may be radially expansible and contractible and which is disposed between the mask 1 and the exhalation valve 19 to compensate for fluctuations in pressure due to expansion or contraction of the inhalation and exhalation tubes as the wearer moves his head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3311456A GB857661A (en) | 1956-10-30 | 1956-10-30 | Breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3311456A GB857661A (en) | 1956-10-30 | 1956-10-30 | Breathing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB857661A true GB857661A (en) | 1961-01-04 |
Family
ID=10348742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3311456A Expired GB857661A (en) | 1956-10-30 | 1956-10-30 | Breathing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB857661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467797A (en) * | 1980-12-15 | 1984-08-28 | Franke David M | Breathing effort reduction device for scuba gear |
-
1956
- 1956-10-30 GB GB3311456A patent/GB857661A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467797A (en) * | 1980-12-15 | 1984-08-28 | Franke David M | Breathing effort reduction device for scuba gear |
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