GB493057A - Masks for the prevention and relief of allergic respiratory complaints - Google Patents
Masks for the prevention and relief of allergic respiratory complaintsInfo
- Publication number
- GB493057A GB493057A GB9044/37A GB904437A GB493057A GB 493057 A GB493057 A GB 493057A GB 9044/37 A GB9044/37 A GB 9044/37A GB 904437 A GB904437 A GB 904437A GB 493057 A GB493057 A GB 493057A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screens
- mask
- substances
- masks
- relief
- 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
493,057. Respiratory appliances. BIEDERMAN, J. B. March 30, 1937, No. 9044. Convention date, April 11, 1936. [Class 81 (ii)] A mask 1 for use in cases of asthma and the like is formed with an inlet aperture 4 having in front of it electric precipitation means for pollen and like particles comprising one or more insulated. screens 11, 12, electrically polarized by connection to the poles of a dry cell 16 ; preferably two screens connected one to each pole are employed. The screens are of fine wire mesh secured in a ring and are mounted in a filter housing 6 provided with internal shoulders 9, 10, and having a screw-on retaining ring 8. Exhaling valves are provided in the upper part of the mask. The Specification as open to inspection under Sect. 91 describes the use, in place of a cell for polarizing the screen or screens, of substances of negative polarization such as aluminium or iron hydroxide, or of positive polarization such as iron sulphide, the substances being applied to screens which may be of fabric or gauze. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US493057XA | 1936-04-11 | 1936-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493057A true GB493057A (en) | 1938-09-30 |
Family
ID=21959122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9044/37A Expired GB493057A (en) | 1936-04-11 | 1937-03-30 | Masks for the prevention and relief of allergic respiratory complaints |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB493057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1040379B (en) * | 1953-03-07 | 1958-10-02 | Ludger Funder Dr Ing | Dust protection mask with electrostatically charged filter plates |
-
1937
- 1937-03-30 GB GB9044/37A patent/GB493057A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1040379B (en) * | 1953-03-07 | 1958-10-02 | Ludger Funder Dr Ing | Dust protection mask with electrostatically charged filter plates |
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