WO1991005584A1 - Respiratory protection device - Google Patents
Respiratory protection device Download PDFInfo
- Publication number
- WO1991005584A1 WO1991005584A1 PCT/GB1990/001581 GB9001581W WO9105584A1 WO 1991005584 A1 WO1991005584 A1 WO 1991005584A1 GB 9001581 W GB9001581 W GB 9001581W WO 9105584 A1 WO9105584 A1 WO 9105584A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- face mask
- face
- mask
- mouth
- Prior art date
Links
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
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
Definitions
- This invention relates to a respiratory protection device comprising a face mask with a filter.
- the device is intended particularly, but not solely, for the use of cyclists in built-up areas and on roads with high traffic density.
- the invention provides a respiratory protection device comprising a resiliently stretchable face mask of spongy material for covering at least the nose and mouth, the face mask having an air-permeable region for extending over at least the nasal and oral orifices, the face mask including at least one non-return exhalation valve, a disposable flexible air-permeable filter for extending over at least the nasal and oral orifices, the filter being in direct contact with the face when the device is worn, temporary connecting means connecting the exhalation valve to a corresponding aperture in the filter, and means for attaching the face mask to the head so that the filter is sandwiched between the face mask and the face.
- the face mask preferably has a porous fabric (e. g. cotton) lining, so as not to interfere too greatly with perspiration.
- the face mask conveniently has side pieces which carry the attaching means and which can be connected together at the back of the head.
- the rear ends of the side pieces carry respective loops and hooks for connection together; the rear ends are preferably enlarged so that the rear ends can be overlapped to different degrees to accommodate different head sizes.
- the face mask is resiliently stretchable, which facilitates a good fit.
- the face mask may be made, for example, from " Plastazote” or "Evazote” (Trade Marks of BXL Plastics Ltd. for closed-cell cross-linked polyethylene and co-polymer foams ) or expanded neoprene.
- the filter preferably comprises active carbon, preferably in the form of activated charcoal cloth.
- the surface of the cloth which is to contact the face preferably has a lining, such as a particulate lining for the sake of comfort, enhanced strength, improved handling, and increased ability to trap air-borne particulate matter.
- Activated charcoal cloth is woven from charcoal yarn and is non-toxic. It has the ability to physically and chemically trap odours, vapours, bacteria, viruses, acid gases, and dust of a size greater than 0.5 ⁇ m. With respect to vehicle exhaust pollutants, it exhibits excellent adsorption of aromatic hydrocarbons and particulate matter, poor adsorption of carbon monoxide, moderate adsorption of sulphur dioxide, and poor adsorption of nitrogen dioxide.
- Impregnation of the filter with platinum may increase its ability to adsorb carbon monoxide. Impregnation of the filter with copper ' gives it excellent ability to chemisorb nitrogen dioxide and sulphur dioxide.
- a non-woven fabric lining may be impregnated with potassium permanganate to enhance chemisorbtion of acid gases and also to offer an indication, by way of a colour change, when the filter is due for replacement.
- the face mask preferably incorporates one or more nose clips which can be plastically deformed to fit the bridge of the nose in order to minimize leakage round the edge of the filter.
- Figure 1 is an exploded perspective view of a respiratory protection device
- Figure 2 is a side view of an exhalation valve
- Figure 3 is an axial section through the valve, taken on line B-B in Figure 2;
- Figure 4 is a section taken on line C-C in Figure 2.
- Figure 5 is an axial section through an annular connection member.
- the respiratory protection device illustrated comprises a face mask 1 and a filter 2 which fits in the face mask and is in direct contact with the face when the device is worn.
- the face mask 1 is of expanded neoprene sandwiched between knitted fabric coverings. It has a face-covering portion 3, which is to extend vertically from the top of the nose to the chin and horizontally from cheek to cheek, and integral side pieces 4 whose rear ends 6 are enlarged and bear respectively "Velcro" (Registered Trade Mark) hook material 7 and loop material 8.
- the mask has through-holes 9 defining an air-permeable region corresponding to the region of the nasal and oral orifices.
- the mask Near each end of the mouth the mask has an aperture 11 in which a non-return exhalation valve 12 is fixed.
- the valve has a cover 13 with peripheral openings 14, a freely-movable valve disc 16, an annular valve seat 17 which projects into the mask through the aperture 11, and an annular retaining member 18 which clamps the periphery of the aperture 11 to the valve seat 17 and cover 13.
- a plastically deformable nose clip 20 comprising a pressing made from annealed aluminium is incorporated in the face mask 1 in the region of the bridge of the nose.
- the filter 2 has a shape corresponding to that of the face-covering portion 3 of the mask. It comprises an outer layer of particulate non-woven material, a middle layer of activated charcoal cloth, and an inner layer or lining of particulate non-woven material.
- the filter 2 is made in two parts stitched together along a seam 21.
- the filter 2 has two apertures corresponding to the mask apertures 11 and each containing an annular connection member 24 having a flange 26 on the side of the filter adjacent the face, and a tube 28 which projects out through the filter.
- the tube 28 is an interference fit in the bore of the retaining member 18 of the corresponding exhalation valve 12.
- the filter 2 is located in a stable and most effective position and yet is easily removable for replacement.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002067195A CA2067195C (en) | 1989-10-12 | 1990-10-12 | Respiratory protection device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8922951A GB2236681B (en) | 1989-10-12 | 1989-10-12 | Respiratory protection device |
GB8922951.2 | 1989-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991005584A1 true WO1991005584A1 (en) | 1991-05-02 |
Family
ID=10664432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1990/001581 WO1991005584A1 (en) | 1989-10-12 | 1990-10-12 | Respiratory protection device |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0495864A1 (en) |
JP (1) | JP2928381B2 (en) |
AU (1) | AU6602590A (en) |
CA (1) | CA2067195C (en) |
GB (1) | GB2236681B (en) |
WO (1) | WO1991005584A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0557042A1 (en) * | 1992-02-17 | 1993-08-25 | INDENA S.p.A. | Cosmetic and/or pharmaceutical compositions and methods for their use in protecting tissues from contact with heavy metals |
USD746439S1 (en) | 2013-12-30 | 2015-12-29 | Kimberly-Clark Worldwide, Inc. | Combination valve and buckle set for disposable respirators |
US9642403B2 (en) | 2007-08-16 | 2017-05-09 | Kimberly-Clark Worldwide, Inc. | Strap fastening system for a disposable respirator providing improved donning |
EP3178526A3 (en) * | 2015-12-07 | 2017-08-16 | Xiaomi Inc. | Molded breathing mask having a perforated outer cup and replacable inner filter sheet |
US10434341B1 (en) | 2015-06-05 | 2019-10-08 | Steve Gordon Torbenson | Mask apparatuses and approach |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2262891A (en) * | 1991-12-05 | 1993-07-07 | Genevieve * Marsh Teresa | All in one face mask |
CA2061073A1 (en) * | 1992-02-12 | 1993-08-13 | Kuo Huei Liang | Mask with means for passing out the expiration of air |
GB9507718D0 (en) * | 1995-04-13 | 1995-05-31 | Chelsea Systems Ltd | Mask |
US6561191B1 (en) | 1997-02-10 | 2003-05-13 | Resmed Limited | Mask and a vent assembly therefor |
AUPO504597A0 (en) | 1997-02-10 | 1997-03-06 | Resmed Limited | A mask and a vent assembly therefor |
EP1408762A2 (en) | 2000-02-17 | 2004-04-21 | Ecosmart Technologies, Inc. | Plant essential oils containing pediculicidal compositions |
US6581594B1 (en) | 2000-05-15 | 2003-06-24 | Resmed Limited | Respiratory mask having gas washout vent and gas washout vent for respiratory mask |
AU2007202555B2 (en) * | 2001-12-04 | 2011-09-08 | ResMed Pty Ltd | Respiratory Mask Having Gas Washout Vent and Gas Washout Vent Assembly for a Respiratory Mask |
AU2005231520B2 (en) | 2004-04-09 | 2011-07-28 | Resmed Limited | Nasal assembly |
AU2006291134C1 (en) * | 2005-09-12 | 2013-08-15 | Abela Pharmaceuticals, Inc. | Systems for removing dimethyl sulfoxide (DMSO) or related compounds, or odors associated with same |
WO2010070495A1 (en) * | 2008-12-17 | 2010-06-24 | Koninklijke Philips Electronics, N.V. | Respiratory interface device with filtration medium |
US8617295B2 (en) * | 2009-09-30 | 2013-12-31 | 3M Innovative Properties Company | Active-particulate air filter having monolith primary filter and polishing filter |
KR101964732B1 (en) * | 2017-12-05 | 2019-04-02 | 한은빈 | dust mask |
DE102018125228B4 (en) * | 2018-10-11 | 2021-06-24 | Pr-Technik Gmbh | Modular respiratory protection device |
JP2021169666A (en) * | 2020-04-14 | 2021-10-28 | 有限会社トラッド | Air sterilizer by ultraviolet irradiation, and mask and full face mask using the same |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR374693A (en) * | 1907-01-09 | 1907-06-20 | Arthur Touchard | Mouth cover for motorists |
FR870560A (en) * | 1941-03-05 | 1942-03-16 | Use and method of making filter paper washable as an air and gas filter, and manufacture of filter paper respiratory masks | |
GB1092378A (en) * | 1963-09-27 | 1967-11-22 | Chapman & Smith Ltd | Device for filtering air |
GB2176404A (en) * | 1985-06-13 | 1986-12-31 | Od G Univ Im I I Mechnikova | Respirator |
EP0294707A2 (en) * | 1987-06-11 | 1988-12-14 | HELSA-WERKE Helmut Sandler GmbH & Co. KG | Breathing protection mask |
US4856508A (en) * | 1987-04-13 | 1989-08-15 | New England Thermoplastics, Inc. | Face mask |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1075346A (en) * | 1964-06-23 | 1967-07-12 | Martindale Electric Company Lt | Improvements in and relating to sanitary masks |
FR1503573A (en) * | 1966-06-29 | 1967-12-01 | Shell respirator | |
SE7601232L (en) * | 1976-02-05 | 1977-08-06 | Reboprodukter Goran Segersten | FACE MASK WITH REPLACABLE FILTER |
GB2072516A (en) * | 1980-03-31 | 1981-10-07 | Siebe Gorman & Co Ltd | Improvements in and relating to respiratory face masks |
-
1989
- 1989-10-12 GB GB8922951A patent/GB2236681B/en not_active Expired - Lifetime
-
1990
- 1990-10-12 WO PCT/GB1990/001581 patent/WO1991005584A1/en not_active Application Discontinuation
- 1990-10-12 EP EP19900915501 patent/EP0495864A1/en not_active Withdrawn
- 1990-10-12 JP JP2514453A patent/JP2928381B2/en not_active Expired - Lifetime
- 1990-10-12 CA CA002067195A patent/CA2067195C/en not_active Expired - Lifetime
- 1990-10-12 AU AU66025/90A patent/AU6602590A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR374693A (en) * | 1907-01-09 | 1907-06-20 | Arthur Touchard | Mouth cover for motorists |
FR870560A (en) * | 1941-03-05 | 1942-03-16 | Use and method of making filter paper washable as an air and gas filter, and manufacture of filter paper respiratory masks | |
GB1092378A (en) * | 1963-09-27 | 1967-11-22 | Chapman & Smith Ltd | Device for filtering air |
GB2176404A (en) * | 1985-06-13 | 1986-12-31 | Od G Univ Im I I Mechnikova | Respirator |
US4856508A (en) * | 1987-04-13 | 1989-08-15 | New England Thermoplastics, Inc. | Face mask |
EP0294707A2 (en) * | 1987-06-11 | 1988-12-14 | HELSA-WERKE Helmut Sandler GmbH & Co. KG | Breathing protection mask |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0557042A1 (en) * | 1992-02-17 | 1993-08-25 | INDENA S.p.A. | Cosmetic and/or pharmaceutical compositions and methods for their use in protecting tissues from contact with heavy metals |
US9642403B2 (en) | 2007-08-16 | 2017-05-09 | Kimberly-Clark Worldwide, Inc. | Strap fastening system for a disposable respirator providing improved donning |
USD746439S1 (en) | 2013-12-30 | 2015-12-29 | Kimberly-Clark Worldwide, Inc. | Combination valve and buckle set for disposable respirators |
US10434341B1 (en) | 2015-06-05 | 2019-10-08 | Steve Gordon Torbenson | Mask apparatuses and approach |
US11478668B1 (en) | 2015-06-05 | 2022-10-25 | Rz Industries, Llc | Mask apparatuses and approach |
EP3178526A3 (en) * | 2015-12-07 | 2017-08-16 | Xiaomi Inc. | Molded breathing mask having a perforated outer cup and replacable inner filter sheet |
US10798979B2 (en) | 2015-12-07 | 2020-10-13 | Xiaomi Inc. | Mask |
Also Published As
Publication number | Publication date |
---|---|
AU6602590A (en) | 1991-05-16 |
GB2236681A (en) | 1991-04-17 |
EP0495864A1 (en) | 1992-07-29 |
JP2928381B2 (en) | 1999-08-03 |
JPH05500915A (en) | 1993-02-25 |
GB8922951D0 (en) | 1989-11-29 |
GB2236681B (en) | 1992-04-22 |
CA2067195A1 (en) | 1991-04-13 |
CA2067195C (en) | 2003-06-10 |
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