WO1993024181A1 - Unidirectional fluid valve - Google Patents
Unidirectional fluid valve Download PDFInfo
- Publication number
- WO1993024181A1 WO1993024181A1 PCT/US1993/003797 US9303797W WO9324181A1 WO 1993024181 A1 WO1993024181 A1 WO 1993024181A1 US 9303797 W US9303797 W US 9303797W WO 9324181 A1 WO9324181 A1 WO 9324181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flexible flap
- valve
- orifice
- seal ridge
- flap
- Prior art date
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
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/10—Valves
-
- 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
- A62B18/02—Masks
- A62B18/025—Halfmasks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
- Y10T137/0491—Valve or valve element assembling, disassembling, or replacing
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Check Valves (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52032293A JP3359033B2 (en) | 1992-05-29 | 1993-04-21 | Check valve |
BR9306447A BR9306447A (en) | 1992-05-29 | 1993-04-21 | One-way hydraulic valve and filter face mask |
KR1019940704287A KR100258519B1 (en) | 1992-05-29 | 1993-04-21 | Unidirectional fluid valve |
EP19930910731 EP0674535B1 (en) | 1992-05-29 | 1993-04-21 | Unidirectional fluid valve |
DE1993612509 DE69312509T2 (en) | 1992-05-29 | 1993-04-21 | CHECK VALVE |
AU41120/93A AU665082B2 (en) | 1992-05-29 | 1993-04-21 | Unidirectional fluid valve |
CA 2134764 CA2134764C (en) | 1992-05-29 | 1993-04-21 | Unidirectional fluid valve |
NO944559A NO303864B1 (en) | 1992-05-29 | 1994-11-28 | Face Filter Mask |
NO19973171A NO314439B1 (en) | 1992-05-29 | 1997-07-08 | One-way fluid valve |
NO20030186A NO20030186D0 (en) | 1992-05-29 | 2003-01-14 | One-way fluid valve |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89128992A | 1992-05-29 | 1992-05-29 | |
US07/891,289 | 1992-05-29 | ||
US07/981,244 US5325892A (en) | 1992-05-29 | 1992-11-25 | Unidirectional fluid valve |
US07/981,244 | 1992-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993024181A1 true WO1993024181A1 (en) | 1993-12-09 |
Family
ID=27128974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1993/003797 WO1993024181A1 (en) | 1992-05-29 | 1993-04-21 | Unidirectional fluid valve |
Country Status (9)
Country | Link |
---|---|
US (4) | US6854463B2 (en) |
EP (1) | EP0674535B1 (en) |
JP (2) | JP3359033B2 (en) |
AU (1) | AU665082B2 (en) |
BR (1) | BR9306447A (en) |
CA (1) | CA2134764C (en) |
DE (1) | DE69312509T2 (en) |
MX (1) | MX9302879A (en) |
WO (1) | WO1993024181A1 (en) |
Cited By (15)
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US7428903B1 (en) | 1992-05-29 | 2008-09-30 | 3M Innovative Properties Company | Fibrous filtration face mask having a new unidirectional fluid valve |
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US7117868B1 (en) | 1992-05-29 | 2006-10-10 | 3M Innovative Properties Company | Fibrous filtration face mask having a new unidirectional fluid valve |
US7493900B1 (en) | 1992-05-29 | 2009-02-24 | 3M Innovative Properties Company | Fibrous filtration face mask having a new unidirectional fluid valve |
US7428903B1 (en) | 1992-05-29 | 2008-09-30 | 3M Innovative Properties Company | Fibrous filtration face mask having a new unidirectional fluid valve |
US7311104B2 (en) | 1992-05-29 | 2007-12-25 | 3M Innovative Properties Company | Method of making a filtering face mask that has an exhalation valve |
EP0756881A2 (en) * | 1995-08-04 | 1997-02-05 | RACAL HEALTH & SAFETY LIMITED | Uni-directional fluid valve |
EP1203599A3 (en) * | 1995-08-04 | 2003-02-12 | Minnesota Mining And Manufacturing Company | A filter face mask |
GB2304176B (en) * | 1995-08-04 | 1999-08-18 | Racal Health & Safety Ltd | Uni-directional fluid valve |
EP0756881A3 (en) * | 1995-08-04 | 1998-03-11 | RACAL HEALTH & SAFETY LIMITED | Uni-directional fluid valve |
GB2304176A (en) * | 1995-08-04 | 1997-03-12 | Racal Health & Safety Ltd | Uni-directional fluid valve |
USRE43289E1 (en) | 1995-08-04 | 2012-04-03 | 3M Innovative Properties Company | Uni-directional fluid valve |
FR2767482A1 (en) * | 1997-08-20 | 1999-02-26 | Graham Hamilton Millar | Blower for incorporation in anti-dust mask |
WO2002051486A1 (en) * | 2000-12-22 | 2002-07-04 | Resmed Ltd. | Flow regulation vent |
US10220179B2 (en) | 2000-12-22 | 2019-03-05 | Resmed Limited | Flow regulation vent |
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US7849856B2 (en) | 2001-06-25 | 2010-12-14 | 3M Innovative Properties Company | Respirator valve |
US7302951B2 (en) | 2001-06-25 | 2007-12-04 | 3M Innovative Properties Company | Unidirectional respirator valve |
US8820326B2 (en) | 2007-08-31 | 2014-09-02 | 3M Innovative Properties Company | Respirator facepiece with thermoset elastomeric face seal |
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US10065056B2 (en) | 2007-08-31 | 2018-09-04 | 3M Innovative Properties Company | Unitary respirator with molded thermoset elastomeric elements |
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Also Published As
Publication number | Publication date |
---|---|
US20020185133A1 (en) | 2002-12-12 |
US6854463B2 (en) | 2005-02-15 |
MX9302879A (en) | 1993-11-01 |
JPH07506751A (en) | 1995-07-27 |
BR9306447A (en) | 1998-06-30 |
US5509436A (en) | 1996-04-23 |
CA2134764A1 (en) | 1993-12-09 |
CA2134764C (en) | 1999-04-27 |
DE69312509D1 (en) | 1997-08-28 |
US20020170563A1 (en) | 2002-11-21 |
EP0674535A1 (en) | 1995-10-04 |
US7311104B2 (en) | 2007-12-25 |
JP3359033B2 (en) | 2002-12-24 |
JP2002253689A (en) | 2002-09-10 |
US6843248B2 (en) | 2005-01-18 |
US20030084902A1 (en) | 2003-05-08 |
DE69312509T2 (en) | 1998-02-26 |
JP3907500B2 (en) | 2007-04-18 |
EP0674535B1 (en) | 1997-07-23 |
AU4112093A (en) | 1993-12-30 |
AU665082B2 (en) | 1995-12-14 |
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