GB555668A - Improvements in respirators - Google Patents
Improvements in respiratorsInfo
- Publication number
- GB555668A GB555668A GB1410141A GB1410141A GB555668A GB 555668 A GB555668 A GB 555668A GB 1410141 A GB1410141 A GB 1410141A GB 1410141 A GB1410141 A GB 1410141A GB 555668 A GB555668 A GB 555668A
- Authority
- GB
- United Kingdom
- Prior art keywords
- canister
- face
- piece
- wearer
- valve
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
555,668. Respiratory appliance. PRATT, J. D., and SADD, J. A. Nov. 1, 1941, No. 14101. [Class 81 (ii)] In a gas mask or respirator having a rubber or like flexible face-piece adapted to be secured upon the head of the wearer and having a purifying or absorbing canister or container secured to and projecting from the face-piece, the canister or container is attached to one side of the face piece so as not to interfere with any essential operations of the wearer. As shown one expiratory valve is seated at the front of the face-piece a and may be protected by perforated plates e and the axis of the canister q is arranged approximately coincident with the axis of the normal to and fro movements of the head of the wearer. The canister may be fitted with a cone h having an aperture and corks may be fitted into this aperture and one within the face-piece above the inlet valve to render the canister watertight. The expiratory valve may be flexible with one or more annular ribs on one or both faces and the ribs may be of rectangular form with the larger dimention at right angles to the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1410141A GB555668A (en) | 1941-11-01 | 1941-11-01 | Improvements in respirators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1410141A GB555668A (en) | 1941-11-01 | 1941-11-01 | Improvements in respirators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB555668A true GB555668A (en) | 1943-09-02 |
Family
ID=10034991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1410141A Expired GB555668A (en) | 1941-11-01 | 1941-11-01 | Improvements in respirators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB555668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2466127A (en) * | 1945-06-28 | 1949-04-05 | Donald P Smith | Outlet valve-diaphragm assembly |
| US5181507A (en) * | 1991-10-25 | 1993-01-26 | Wgm Safety Corp. | Air purifying respirator suspension |
-
1941
- 1941-11-01 GB GB1410141A patent/GB555668A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2466127A (en) * | 1945-06-28 | 1949-04-05 | Donald P Smith | Outlet valve-diaphragm assembly |
| US5181507A (en) * | 1991-10-25 | 1993-01-26 | Wgm Safety Corp. | Air purifying respirator suspension |
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