GB735277A - Improvements in or relating to respirators - Google Patents
Improvements in or relating to respiratorsInfo
- Publication number
- GB735277A GB735277A GB2952553A GB2952553A GB735277A GB 735277 A GB735277 A GB 735277A GB 2952553 A GB2952553 A GB 2952553A GB 2952553 A GB2952553 A GB 2952553A GB 735277 A GB735277 A GB 735277A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air filter
- tubular member
- face piece
- flexible
- opening
- 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
- 239000000463 material Substances 0.000 abstract 3
- 239000000428 dust Substances 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 1
- 230000001473 noxious effect Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 230000000241 respiratory effect Effects 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
735,277. Respiratory appliances. MINE SAFETY APPLIANCES CO. Oct. 26, 1953, No. 29525/53. Class 81 (2). A device for connecting an opening in an air filter with an opening in a face piece comprises a tube which extends through both openings and is pressed against the sides of the openings by a tubular member inserted into the tube. The air inlet opening 4 of a face piece 1 is secured to the outlet opening of an air filter 8 by a flexible grommet 14. The flexible grommet 14 is of circular cross-section and is deformed to fit the openings 4, against which it is expanded by a removable rigid tubular member 15 to form a seal, the passage through the tubular member 15 forming an air passage between the air filter 8 and the face piece 1. A flexible flap valve 18 which closes on exhalation is secured to the inner end of the tube 15. The wearer may exhale between the facepiece cushion 2 and the face or outlets covered by flexible exhalation valve discs 6 may be provided. The air filter 8 is provided with material 9 for filtering out noxious gases and a perforated partition 11 spacing the material 9 from the back wall of the air filter 8. The air filter 8 may be readily replaced by a mechanical dust filter (Fig. 6) formed from a case 20 containing a sheet 21 of dust filtering material clamped in place by a perforated cover 22 and provided with an outlet opening 23 by which it is secured to the face piece 1 using the grommet 14 and rigid tubular member 15.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2952553A GB735277A (en) | 1953-10-26 | 1953-10-26 | Improvements in or relating to respirators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2952553A GB735277A (en) | 1953-10-26 | 1953-10-26 | Improvements in or relating to respirators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB735277A true GB735277A (en) | 1955-08-17 |
Family
ID=10292922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2952553A Expired GB735277A (en) | 1953-10-26 | 1953-10-26 | Improvements in or relating to respirators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB735277A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2266247A (en) * | 1992-04-16 | 1993-10-27 | Chen Kuo Jen | Gas mask device |
WO2011037544A1 (en) * | 2009-09-25 | 2011-03-31 | Jcs Group | Respiratory device with filter |
-
1953
- 1953-10-26 GB GB2952553A patent/GB735277A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2266247A (en) * | 1992-04-16 | 1993-10-27 | Chen Kuo Jen | Gas mask device |
GB2266247B (en) * | 1992-04-16 | 1996-07-24 | Chen Kuo Jen | Gas mask device |
WO2011037544A1 (en) * | 2009-09-25 | 2011-03-31 | Jcs Group | Respiratory device with filter |
CN102639193A (en) * | 2009-09-25 | 2012-08-15 | Jcs集团 | Respiratory device with filter |
CN102639193B (en) * | 2009-09-25 | 2015-04-15 | 佳士科技有限公司 | Respiratory device with filter |
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