CA1076041A - Filtres pour liquides ou gaz - Google Patents
Filtres pour liquides ou gazInfo
- Publication number
- CA1076041A CA1076041A CA275,513A CA275513A CA1076041A CA 1076041 A CA1076041 A CA 1076041A CA 275513 A CA275513 A CA 275513A CA 1076041 A CA1076041 A CA 1076041A
- Authority
- CA
- Canada
- Prior art keywords
- filter
- sheet
- pleated
- layer
- filter material
- 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
- 239000007789 gas Substances 0.000 title description 6
- 239000007788 liquid Substances 0.000 title description 5
- 239000000463 material Substances 0.000 claims abstract description 57
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000011230 binding agent Substances 0.000 claims abstract description 18
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 13
- 239000000057 synthetic resin Substances 0.000 claims abstract description 13
- 239000005388 borosilicate glass Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 5
- 239000003595 mist Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 8
- 239000002657 fibrous material Substances 0.000 claims description 5
- 239000012229 microporous material Substances 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 12
- 230000035939 shock Effects 0.000 abstract description 6
- 229920001568 phenolic resin Polymers 0.000 abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 239000005011 phenolic resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 239000000975 dye Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- -1 dirt Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000237074 Centris Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 241000428533 Rhis Species 0.000 description 1
- RCTGMCJBQGBLKT-UHFFFAOYSA-N Sudan IV Chemical compound CC1=CC=CC=C1N=NC(C=C1C)=CC=C1N=NC1=C(O)C=CC2=CC=CC=C12 RCTGMCJBQGBLKT-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007706 flame test Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/04—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
- B01D27/06—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
- B01D39/04—Organic material, e.g. cellulose, cotton
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
- B01D39/2024—Glass or glassy material the material being filamentary or fibrous otherwise bonded, e.g. by resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2027—Metallic material
- B01D39/2041—Metallic material the material being filamentary or fibrous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2072—Other inorganic materials, e.g. ceramics the material being particulate or granular
- B01D39/2079—Other inorganic materials, e.g. ceramics the material being particulate or granular otherwise bonded, e.g. by resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2082—Other inorganic materials, e.g. ceramics the material being filamentary or fibrous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0095—Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/064—The fibres being mixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/08—Special characteristics of binders
- B01D2239/086—Binders between particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1208—Porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1225—Fibre length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1233—Fibre diameter
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtration Of Liquid (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13640/76A GB1557821A (en) | 1976-04-05 | 1976-04-05 | Filters for liquids or gases |
| GB1908376 | 1976-05-10 | ||
| GB4696976 | 1976-11-11 | ||
| GB968077 | 1977-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1076041A true CA1076041A (fr) | 1980-04-22 |
Family
ID=27447725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA275,513A Expired CA1076041A (fr) | 1976-04-05 | 1977-04-04 | Filtres pour liquides ou gaz |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS52144868A (fr) |
| AT (1) | AT368401B (fr) |
| AU (1) | AU510129B2 (fr) |
| BR (1) | BR7702120A (fr) |
| CA (1) | CA1076041A (fr) |
| CH (1) | CH619152A5 (fr) |
| DE (1) | DE2715204C2 (fr) |
| DK (1) | DK148952C (fr) |
| ES (1) | ES457536A1 (fr) |
| FR (1) | FR2347081A1 (fr) |
| GR (1) | GR60807B (fr) |
| NL (1) | NL183871C (fr) |
| SE (1) | SE432201B (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5186165A (en) * | 1991-06-05 | 1993-02-16 | Brookdale International Systems Inc. | Filtering canister with deployable hood and mouthpiece |
| US5394867A (en) * | 1991-06-05 | 1995-03-07 | Brookdale International Systems Inc. | Personal disposable emergency breathing system with dual air supply |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2414944B1 (fr) * | 1978-01-23 | 1988-01-08 | Process Scient Innovations | Elements filtrants pour gaz ou liquides et procede de fabrication |
| DE2826237C2 (de) * | 1978-06-15 | 1981-11-19 | Riensch & Held, 2000 Hamburg | Fettfilter, insbesondere für Dunstabzughauben |
| FR2482868A1 (fr) * | 1980-05-22 | 1981-11-27 | Sofrance Sa | Milieu filtrant a base de fibres et procede pour le preparer |
| EP0048310B1 (fr) * | 1980-09-22 | 1986-12-03 | Air-Maze Corporation | Séparateur gaz-liquide |
| JPS57147413A (en) * | 1981-03-10 | 1982-09-11 | Asahi Chem Ind Co Ltd | Filter medium for high-performance air filter and production thereof |
| DE3505792A1 (de) * | 1984-02-24 | 1985-08-29 | Sartorius GmbH, 3400 Göttingen | Auswechselbares filterelement zur filtration von fluiden |
| DK65889A (da) * | 1988-04-02 | 1989-10-03 | Mueller S F & Partner | Filteranlaeg |
| DE3917033C1 (fr) * | 1989-05-26 | 1990-08-02 | Olaf 2000 Hamburg De Ahlers | |
| ATE114992T1 (de) * | 1990-07-05 | 1994-12-15 | Filtrox Werk Ag | Tiefbettfilter, verfahren zur herstellung einer filterschicht und filtermodul. |
| GB9112615D0 (en) * | 1991-06-12 | 1991-07-31 | Domnick Hunter Filters Ltd | Filter |
| JP3308968B2 (ja) * | 2000-09-28 | 2002-07-29 | 株式会社周越テクニカ | 内燃機関用エアフィルタ |
| US6866693B2 (en) | 2002-06-06 | 2005-03-15 | Shuetsutechnica Co., Ltd. | Washable air filter for internal combustion engine |
| CN101039734B (zh) * | 2004-10-15 | 2010-09-08 | 3M创新有限公司 | 褶式多层过滤介质及滤筒 |
| DE102005014360A1 (de) | 2005-03-30 | 2006-10-05 | Hydac Filtertechnik Gmbh | Filterelement |
| DE102005032395A1 (de) * | 2005-07-12 | 2007-01-25 | Mahle International Gmbh | Filtermedium für technische Anwendungen und Verfahren seiner Herstellung |
| PL2663379T3 (pl) | 2011-01-11 | 2018-06-29 | Amazon Filters Spółka z Ograniczoną Odpowiedzialnością | Sposób wytwarzania filtrów plisowanych |
| DE102011119408A1 (de) * | 2011-11-21 | 2013-05-23 | Hydac Filtertechnik Gmbh | Filtermaterial |
| JP5555297B2 (ja) * | 2012-10-04 | 2014-07-23 | 株式会社ウェルシィ | 携行型浄水キット |
| CN110252029B (zh) * | 2019-06-05 | 2022-07-19 | 浙江佳海新材料有限公司 | 一种具有过滤voc气体性能的汽车空调过滤材料及其工艺 |
| DE102019208728A1 (de) * | 2019-06-14 | 2020-12-17 | Filtration Group Gmbh | Entölungseinrichtung mit Entölungsfilter |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3353682A (en) * | 1966-02-28 | 1967-11-21 | Pall Corp | Fluid-permeable fibrous multilayer materials and process of making the same |
| GB1222502A (en) * | 1967-02-04 | 1971-02-17 | Lantor Ltd | Coated non-woven fabrics |
| US3458338A (en) * | 1967-03-14 | 1969-07-29 | Scott Paper Co | Liquid-gas contact pads |
| US3856919A (en) * | 1970-06-08 | 1974-12-24 | Burton Parsons Chemicals Inc | Ophthalmic solution |
| GB1265089A (fr) * | 1969-12-10 | 1972-03-01 | ||
| DE1962527A1 (de) * | 1969-12-12 | 1971-06-16 | Tech Akustik Gmbh & Co | Elastischer Sportbodenbelag |
| GB1330642A (en) * | 1970-09-17 | 1973-09-19 | Balston Ltd W R | Fluid filter |
| DE2102433C3 (de) * | 1971-01-19 | 1978-07-20 | Domnick Hunter (Engineers) Ltd., Washington, Durham (Grossbritannien) | Strömungsmittelfilter mit Farbindikator |
| DE2131236A1 (de) * | 1971-06-24 | 1973-01-11 | Domnick Hunter Holdings | Mikroporoeser faserfilter |
| US3891417A (en) * | 1974-01-28 | 1975-06-24 | King Eng Corp | Filter and sorbent cartridge |
-
1977
- 1977-03-31 GR GR53131A patent/GR60807B/el unknown
- 1977-04-01 CH CH410077A patent/CH619152A5/de not_active IP Right Cessation
- 1977-04-04 AT AT232877A patent/AT368401B/de not_active IP Right Cessation
- 1977-04-04 SE SE7703897A patent/SE432201B/xx not_active IP Right Cessation
- 1977-04-04 DK DK149577A patent/DK148952C/da not_active IP Right Cessation
- 1977-04-04 AU AU23955/77A patent/AU510129B2/en not_active Expired
- 1977-04-04 BR BR7702120A patent/BR7702120A/pt unknown
- 1977-04-04 CA CA275,513A patent/CA1076041A/fr not_active Expired
- 1977-04-05 NL NL7703681A patent/NL183871C/xx not_active IP Right Cessation
- 1977-04-05 DE DE19772715204 patent/DE2715204C2/de not_active Expired
- 1977-04-05 JP JP3896677A patent/JPS52144868A/ja active Granted
- 1977-04-05 ES ES457536A patent/ES457536A1/es not_active Expired
- 1977-04-05 FR FR7710296A patent/FR2347081A1/fr active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5186165A (en) * | 1991-06-05 | 1993-02-16 | Brookdale International Systems Inc. | Filtering canister with deployable hood and mouthpiece |
| US5315987A (en) * | 1991-06-05 | 1994-05-31 | Brookdale International Systems Inc. | Filtering canister with deployable hood and mouthpiece |
| US5394867A (en) * | 1991-06-05 | 1995-03-07 | Brookdale International Systems Inc. | Personal disposable emergency breathing system with dual air supply |
Also Published As
| Publication number | Publication date |
|---|---|
| NL183871C (nl) | 1989-02-16 |
| JPS52144868A (en) | 1977-12-02 |
| DK148952B (da) | 1985-12-02 |
| JPS5626452B2 (fr) | 1981-06-18 |
| ATA232877A (de) | 1982-02-15 |
| DE2715204A1 (de) | 1977-10-27 |
| SE7703897L (sv) | 1977-10-06 |
| AT368401B (de) | 1982-10-11 |
| DE2715204C2 (de) | 1984-03-29 |
| ES457536A1 (es) | 1978-11-16 |
| AU510129B2 (en) | 1980-06-12 |
| SE432201B (sv) | 1984-03-26 |
| FR2347081A1 (fr) | 1977-11-04 |
| AU2395577A (en) | 1978-10-12 |
| GR60807B (en) | 1978-08-30 |
| DK149577A (da) | 1977-10-06 |
| DK148952C (da) | 1986-06-09 |
| NL183871B (nl) | 1988-09-16 |
| FR2347081B1 (fr) | 1982-08-27 |
| NL7703681A (nl) | 1977-10-07 |
| CH619152A5 (en) | 1980-09-15 |
| BR7702120A (pt) | 1977-12-20 |
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