GB1446881A - Diving masks - Google Patents
Diving masksInfo
- Publication number
- GB1446881A GB1446881A GB1270173A GB1270173A GB1446881A GB 1446881 A GB1446881 A GB 1446881A GB 1270173 A GB1270173 A GB 1270173A GB 1270173 A GB1270173 A GB 1270173A GB 1446881 A GB1446881 A GB 1446881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shell
- valve
- diaphragm
- gas
- manifold
- 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
- B63C11/12—Diving masks
- B63C11/14—Diving masks with forced air supply
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/02—Respiratory apparatus with compressed oxygen or air
- A62B7/04—Respiratory apparatus with compressed oxygen or air and lung-controlled oxygen or air valves
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
1446881 Respiratory appliances J W HEISTAND 10 Dec 1973 [16 March 1973] 12701/73 Heading A5T A full facial diving mast comprises a rigid gun-metal shell 10, with a transparent polyvinyl chloride or polycarbonate viewing portion 76, supplied with breathing gas under pressure from a main hose connected to and rotatable through 180‹ with respect to manifold 14, said shell containing a demand valve 24 through whose diaphragm 32 and flap 40 gas is exhausted to ports 34. The valve 24 and diaphragm 32 are located in recess 82 of shell 10 and when the diver inhales, reduced pressure in an oral-nasal mask 42 and hence in the demand valve housing causes diaphragm 32 to move inwards for lever 104 to move seal 94 from nozzle 92 admitting gas from pipe 18 into mask 42. On exhalation, flap 40 opens and gas passes through the centre of the diaphragm and through ports 34 to the outside of the shell. If diaphragm 32 ruptures, the diver seals ports 34 with finger and thumb. Non-return valve 16 prevents evacuation of the mask if the main hose severs. Spigots protruding through holes 114 and 120 secure the manifold 14 to the shell and supply gas respectively via pipe 18 inside the shell to the demand valve 24 and via the free flow valve controlled by knob 26 to a distribution nozzle. A closed cell neoprene hood 48 and an open cell foam ring, through which the diver's face protrudes to be sealed sealed by a neoprene layer 52, is attached to the shell 10 by holes 72 through a rubber strap 70 fittting over posts 66 on a clamp 54, 56 which rests on a flange 64. A hose for a reserve gas supply or to power auxiliary equipment e.g. to inflate underwater lifting devices may be connected to and be rotatable with respect to manifold 14, the flow to or from the manifold controllable by needle valve 22. Water is expelled via valve 36. Communication terminals 46 are provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1270173A GB1446881A (en) | 1973-03-16 | 1973-03-16 | Diving masks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1270173A GB1446881A (en) | 1973-03-16 | 1973-03-16 | Diving masks |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1446881A true GB1446881A (en) | 1976-08-18 |
Family
ID=10009520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1270173A Expired GB1446881A (en) | 1973-03-16 | 1973-03-16 | Diving masks |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1446881A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2137509A (en) * | 1983-04-06 | 1984-10-10 | Figgie Int Inc | Self-contained ventilator/resuscitator |
US4819626A (en) * | 1986-11-14 | 1989-04-11 | The Secretary Of State For Defence In Her Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Contamination prevention device for diver's breathing apparatus |
WO2005068021A2 (en) * | 2004-01-12 | 2005-07-28 | Helmet Integrated Systems Limited | Headgear |
GB2448264A (en) * | 2004-01-12 | 2008-10-08 | Helmet Integrated Syst Ltd | Hood and mask with manifold |
WO2017125628A1 (en) * | 2016-01-19 | 2017-07-27 | Aguilar Zaragozá José Vicente | Face mask for sport diving |
-
1973
- 1973-03-16 GB GB1270173A patent/GB1446881A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2137509A (en) * | 1983-04-06 | 1984-10-10 | Figgie Int Inc | Self-contained ventilator/resuscitator |
US4819626A (en) * | 1986-11-14 | 1989-04-11 | The Secretary Of State For Defence In Her Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Contamination prevention device for diver's breathing apparatus |
WO2005068021A2 (en) * | 2004-01-12 | 2005-07-28 | Helmet Integrated Systems Limited | Headgear |
WO2005068021A3 (en) * | 2004-01-12 | 2005-12-08 | Helmet Integrated Syst Ltd | Headgear |
GB2448264A (en) * | 2004-01-12 | 2008-10-08 | Helmet Integrated Syst Ltd | Hood and mask with manifold |
GB2448264B (en) * | 2004-01-12 | 2009-01-14 | Helmet Integrated Syst Ltd | Headgear |
WO2017125628A1 (en) * | 2016-01-19 | 2017-07-27 | Aguilar Zaragozá José Vicente | Face mask for sport diving |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |