GB719025A - Improvements in or relating to gas regulating apparatus - Google Patents
Improvements in or relating to gas regulating apparatusInfo
- Publication number
- GB719025A GB719025A GB1735/53A GB173553A GB719025A GB 719025 A GB719025 A GB 719025A GB 1735/53 A GB1735/53 A GB 1735/53A GB 173553 A GB173553 A GB 173553A GB 719025 A GB719025 A GB 719025A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- valve
- pressure
- levers
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
- A62B9/022—Breathing demand regulators
-
- 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
- B63C11/2209—First-stage regulators
Landscapes
- Health & Medical Sciences (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
719,025. Fluid-actuated valves. GARRETT CORPORATION. Jan. 21, 1953 [Jan. 28, 1952], No. 1735/53. Class 135. [Also in Group VI] In the demand valve of an underwater respiratory appliance the exhalation valve is mounted on the diaphragm and the inhalation valve is actuated through floating levers engaging the periphery of the diaphragm. Gas or air from a cylinder 16 passes through a filter 25 to the control valve 39 which is held on its seat by a spring 43. A plate member 34, around the valve stem, carries an upstanding. rim 49 which serves as a pivot for three levers 47, the upper ends of which bear on the underside of the diaphragm 13. The upper side of the diaphragm is exposed to the ambient fluid medium through holes 58 in the cover 12. Any reduction in the pressure in chamber 15, which is connected to the breathing mask through a tube 61, below the ambient pressure causes the diaphragm to open the demand valve by means of levers 47 bearing on the head 41 on the valve stem and thus the oxygen breathed is always at the pressure of the surroundings. The outer face of the diaphragm carries a flexible valve member 53 which normally closes ports 56 but, on exhalation, the slightly increased pressure in the chamber 15 thrusts the diaphragm outwards until the centre 54, of valve member 53, abuts against the stop 57 and thereafter lifts the valve member away from the ports 56 to allow the exhaled air to escape.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US719025XA | 1952-01-28 | 1952-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB719025A true GB719025A (en) | 1954-11-24 |
Family
ID=22104330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1735/53A Expired GB719025A (en) | 1952-01-28 | 1953-01-21 | Improvements in or relating to gas regulating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB719025A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2966886A (en) * | 1959-06-12 | 1961-01-03 | Charles M Perkins | Animal waterer |
| AU642481B2 (en) * | 1990-03-29 | 1993-10-21 | F.X.K. Patents Limited | Emergency breathing equipment |
-
1953
- 1953-01-21 GB GB1735/53A patent/GB719025A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2966886A (en) * | 1959-06-12 | 1961-01-03 | Charles M Perkins | Animal waterer |
| AU642481B2 (en) * | 1990-03-29 | 1993-10-21 | F.X.K. Patents Limited | Emergency breathing equipment |
| US5275153A (en) * | 1990-03-29 | 1994-01-04 | F.X.K. Patents Limited | Demand valve having reaction load means and an insertable trigger element |
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