CA2515268C - Protective ensemble comprising protective garment, face mask mounting respirator, and means for conducting exhaled gases into space within protective garment - Google Patents
Protective ensemble comprising protective garment, face mask mounting respirator, and means for conducting exhaled gases into space within protective garment Download PDFInfo
- Publication number
- CA2515268C CA2515268C CA2515268A CA2515268A CA2515268C CA 2515268 C CA2515268 C CA 2515268C CA 2515268 A CA2515268 A CA 2515268A CA 2515268 A CA2515268 A CA 2515268A CA 2515268 C CA2515268 C CA 2515268C
- Authority
- CA
- Canada
- Prior art keywords
- protective
- space
- protective garment
- respirator
- ensemble
- 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 - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
- A62B17/003—Fire-resistant or fire-fighters' clothes
-
- 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
-
- 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
- A62B18/006—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 with pumps for forced ventilation
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Toxicology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
For a firefighter or for an emergency rescue worker, a protective ensemble comprises a protective garment, such as a protective coat, a face mask, which mounts a respirator having an exhalation valve, a housing member, which is coupled to the exhalation valve, and a flexible conduit, which is coupled to the housing member for conducting exhaled gases from the exhalation valve of the respirator into a space within the protective garment. In one contemplated embodiment, the space within the protective garment is a space between layers of the protective garment. In an alternative embodiment, the space within the protective garment is a space between the protective garment and inner clothes of a wearer of the protective ensemble and between the bare skin of the wearer where said skin is not covered by inner clothes of the wearer.
Description
TITLE OF THE INVENTION
PROTECTIVE ENSEMBLE COMPRISING PROTECTIVE GARMENT, FACE MASK MOUNTING RESPIRATOR, AND MEANS FOR
CONDUCTING EXHALED GASES INTO SPACE WITHIN PROTECTIVE
GARMENT
TECHNICAL FIELD OF THE INVENTION
This invention pertains to a protective ensemble for a firefighter or for an emergency rescue worker, the protective ensemble comprising a protective garment and a face mask, which mounts a respirator having an exhalation valve. This invention contemplates that the protective ensemble is equipped with means for conducting exhaled gases from exhalation valve of the respirator into a space within the protective garment.
BACKGROUND OF THE INVENTION
As disclosed in United States Patent No. 5,572,991, a protective garment for a firefighter is worn with a self-contained breathing apparatus (SCBA) having a air tank and having a face mask, from which exhaled air is delivered to a space between adjacent layers of the protective garment, so as to ventilate the protective garment. The space is vented through openings provided between adjacent layers of the protective garment.
As disclosed in said patent, fresh air from an air tank of the self-contained breathing apparatus or fresh air or another gas, such as carbon dioxide, from a separate cannister can be also delivered to the space, either, via a restricted orifice allowing fresh air to bleed into the space, or rapidly via a valve, which is closed normally but which the firefighter can open, via a pull ring, when the firefighter is exposed to extreme heat.
It is known to provide a protective garment, such as a protective coat, protective trousers, protective overalls, or protective coveralls, equipped with means for maintaining positive gas pressure within a space between the protective garment and inner clothes where worn by the wearer within the protective garment and between the protective garment and bare skin of the wearer where said skin is not covered by inner clothes being worn by the wearer within the protective garment. Positive air pressure maintained within the space not only increases the thermal protective performance of the protective garment but also inhibits ingress of foreign gaseous and particulate materials, which may be potentially hazardous.
In one embodiment, such as described above, if the wearer carries a self-contained breathing apparatus including a supply of compressed air and including a face mask, which is arranged to intake air supplied by the supply for the wearer to breathe and to expel air exhaled by the wearer, the protective garment is equipped with means for directing air supplied by the supply and air exhaled by the wearer so as to maintain positive air pressure within a space between the protective garment and inner clothes where worn by the wearer within the protective garment and between the protective garment and bare skin of the wearer where said skin is not covered by inner clothes being worn by the wearer within the protective garment.
SUMMARY OF THE INVENTION
This invention provided a protective ensemble comprising a protective garment, a face mask, which mounts a respirator having an exhalation valve, and means for conducting exhaled gases from the exhalation valve of the respirator into a space within the protective garment.
Preferably, the conducting means comprises a flexible conduit, which is arranged to conduct exhaled gases from the exhalation valve into the space within the protective garment. Preferably, moreover, the conducting means comprises a housing member, which is coupled to the exhalation valve and to which the flexible conduit is coupled.
Conceivably, the space within the protective garment is a space between layers of the protective garment. Alternatively, the space within the protective garment is a space between the protective garment and inner clothes of a wearer of the protective ensemble and between the bare skin of the wearer where said skin is not covered by inner clothes of the wearer. In either instance, exhaled gases conducted into the space within the protective garment help to ventilate the protective garment.
Whether a powered, air-purifying respirator (PAPR) which has a fan designed to draw air through the respirator into the face mask or a non-powered, air-purifying respirator (APR) which does not have such a fan, a respirator of a protective ensemble embodying this invention is distinguishable from a self-contained breathing apparatus (SCBA) because the respirator does not have an air supply, such as an air tank.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a pictorial view of a firefighter wearing a protective ensemble embodying this invention and comprising a protective garment, a face mask, which mounts a respirator having an exhalation valve, and means for conducting exhaled gases from the exhalation valve of the respirator into a space within the protective garment.
Figure 2, on a larger scale, is a sectional view taken along line 2- -2 of Figure 1, in a direction indicated by arrows, to illustrate elements of the conducting means, namely, a housing member covering the exhalation valve and a flexible conduit coupled to the housing member.
Figure 3, on a similar scale, is a sectional view taken along line 3- - 3 of Figure 1, in a direction indicated by arrows, to illustrate one contemplated embodiment of this invention. Figure 4, on a similar scale, is a sectional view taken similarly to illustrate an alternative embodiment of this invention.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
A protective ensemble 10 worn by a firefighter, as illustrated, or by an emergency rescue worker comprises protective garments, which include a protective coat 20, a face mask 30, which mounts a respirator 40 having an exhalation valve 50, and means for conducting exhaled gases from the exhalation valve 50 into a space within the protective coat 20.
The protective coat 20 comprises an outer shell 12 and a lining system 14, which is illustrated schematically and which may include an intermediate liner providing a moisture barrier and an inner liner providing a thermal barrier.
Preferably, the protective coat conforms to NFPA 1971 "Protective Ensemble for Structural Fire Fighting."
As illustrated, the respirator 40 is a non-powered, air-purifying respirator (APR) which has a filter designed to filter contaminants from air breathed through the respirator by a wearer of the face mask 30. Alternatively, the respirator 40 is a powered, air-purifying respirator (PAPR) which also has a fan designed to draw air through the respirator into the face mask 30. In either instance, the exhalation valve 50 is designed to discharge gases exhaled by a wearer of the face mask 30, from the respirator 40.
As illustrated, the face mask 30 is a full face mask, which is designed to cover the eyes, nose, and mouth of the wearer. Alternatively, the face mask 30 is a half face mask, which is designed to cover the nose and mouth of the wearer but not the eyes of the wearer.
As illustrated, the conducting means comprises a housing member 60, which may be metallic, as illustrated, or polymeric, which if polymeric may be rigid or flexible, and which is secured adhesively, as illustrated, or otherwise suitably to the respirator 40 so as to cover the exhalation valve 50, and a flexible conduit 70, which is coupled to and between the housing member 60 and an aperture 80 in the protective coat 10. The flexible conduit 70, which is coupled to the housing member 60 via a fitting 72, is arranged to conduct exhaled gases from the exhalation valve 50 of the housing member 60, through the aperture 80, into a space within the protective coat 10.
In the embodiment illustrated in Figure 2, the flexible conduit 70 extends through the outer shell 22 of the protective coat 20 and is secured at the aperture 80, via a fitting 82 receiving a locking nut 84, and opens into a space S
between layers of the protective coat 20, i.e., between the outer shell 22 and the lining system 24. United States Patent No. 5,572,991, supra, discloses a similar fitting and a similar locking nut, which are utilized similarly.
In the embodiment illustrated in Figure 3, the flexible conduit 70 extends through the outer shell 22 of the protective coat 20 and through the lining system 14 of the protective coat 20 and is secured at the aperture 80, via a fitting 86 receiving a locking nut 88, and opens into a space SS between the protective coat 20 and inner clothes C of a wearer of the protective ensemble and between the bare skin of the wearer where said skin is not covered by inner clothes C of the wearer.
Whether conducted into the space S in the embodiment illustrated in Figure 2 or into the space SS in the embodiment illustrated in Figure 3, exhaled gases conducted by the conducting means from the exhalation valve 50 of the respirator 40 help to ventilate the protective coat 20.
PROTECTIVE ENSEMBLE COMPRISING PROTECTIVE GARMENT, FACE MASK MOUNTING RESPIRATOR, AND MEANS FOR
CONDUCTING EXHALED GASES INTO SPACE WITHIN PROTECTIVE
GARMENT
TECHNICAL FIELD OF THE INVENTION
This invention pertains to a protective ensemble for a firefighter or for an emergency rescue worker, the protective ensemble comprising a protective garment and a face mask, which mounts a respirator having an exhalation valve. This invention contemplates that the protective ensemble is equipped with means for conducting exhaled gases from exhalation valve of the respirator into a space within the protective garment.
BACKGROUND OF THE INVENTION
As disclosed in United States Patent No. 5,572,991, a protective garment for a firefighter is worn with a self-contained breathing apparatus (SCBA) having a air tank and having a face mask, from which exhaled air is delivered to a space between adjacent layers of the protective garment, so as to ventilate the protective garment. The space is vented through openings provided between adjacent layers of the protective garment.
As disclosed in said patent, fresh air from an air tank of the self-contained breathing apparatus or fresh air or another gas, such as carbon dioxide, from a separate cannister can be also delivered to the space, either, via a restricted orifice allowing fresh air to bleed into the space, or rapidly via a valve, which is closed normally but which the firefighter can open, via a pull ring, when the firefighter is exposed to extreme heat.
It is known to provide a protective garment, such as a protective coat, protective trousers, protective overalls, or protective coveralls, equipped with means for maintaining positive gas pressure within a space between the protective garment and inner clothes where worn by the wearer within the protective garment and between the protective garment and bare skin of the wearer where said skin is not covered by inner clothes being worn by the wearer within the protective garment. Positive air pressure maintained within the space not only increases the thermal protective performance of the protective garment but also inhibits ingress of foreign gaseous and particulate materials, which may be potentially hazardous.
In one embodiment, such as described above, if the wearer carries a self-contained breathing apparatus including a supply of compressed air and including a face mask, which is arranged to intake air supplied by the supply for the wearer to breathe and to expel air exhaled by the wearer, the protective garment is equipped with means for directing air supplied by the supply and air exhaled by the wearer so as to maintain positive air pressure within a space between the protective garment and inner clothes where worn by the wearer within the protective garment and between the protective garment and bare skin of the wearer where said skin is not covered by inner clothes being worn by the wearer within the protective garment.
SUMMARY OF THE INVENTION
This invention provided a protective ensemble comprising a protective garment, a face mask, which mounts a respirator having an exhalation valve, and means for conducting exhaled gases from the exhalation valve of the respirator into a space within the protective garment.
Preferably, the conducting means comprises a flexible conduit, which is arranged to conduct exhaled gases from the exhalation valve into the space within the protective garment. Preferably, moreover, the conducting means comprises a housing member, which is coupled to the exhalation valve and to which the flexible conduit is coupled.
Conceivably, the space within the protective garment is a space between layers of the protective garment. Alternatively, the space within the protective garment is a space between the protective garment and inner clothes of a wearer of the protective ensemble and between the bare skin of the wearer where said skin is not covered by inner clothes of the wearer. In either instance, exhaled gases conducted into the space within the protective garment help to ventilate the protective garment.
Whether a powered, air-purifying respirator (PAPR) which has a fan designed to draw air through the respirator into the face mask or a non-powered, air-purifying respirator (APR) which does not have such a fan, a respirator of a protective ensemble embodying this invention is distinguishable from a self-contained breathing apparatus (SCBA) because the respirator does not have an air supply, such as an air tank.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a pictorial view of a firefighter wearing a protective ensemble embodying this invention and comprising a protective garment, a face mask, which mounts a respirator having an exhalation valve, and means for conducting exhaled gases from the exhalation valve of the respirator into a space within the protective garment.
Figure 2, on a larger scale, is a sectional view taken along line 2- -2 of Figure 1, in a direction indicated by arrows, to illustrate elements of the conducting means, namely, a housing member covering the exhalation valve and a flexible conduit coupled to the housing member.
Figure 3, on a similar scale, is a sectional view taken along line 3- - 3 of Figure 1, in a direction indicated by arrows, to illustrate one contemplated embodiment of this invention. Figure 4, on a similar scale, is a sectional view taken similarly to illustrate an alternative embodiment of this invention.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
A protective ensemble 10 worn by a firefighter, as illustrated, or by an emergency rescue worker comprises protective garments, which include a protective coat 20, a face mask 30, which mounts a respirator 40 having an exhalation valve 50, and means for conducting exhaled gases from the exhalation valve 50 into a space within the protective coat 20.
The protective coat 20 comprises an outer shell 12 and a lining system 14, which is illustrated schematically and which may include an intermediate liner providing a moisture barrier and an inner liner providing a thermal barrier.
Preferably, the protective coat conforms to NFPA 1971 "Protective Ensemble for Structural Fire Fighting."
As illustrated, the respirator 40 is a non-powered, air-purifying respirator (APR) which has a filter designed to filter contaminants from air breathed through the respirator by a wearer of the face mask 30. Alternatively, the respirator 40 is a powered, air-purifying respirator (PAPR) which also has a fan designed to draw air through the respirator into the face mask 30. In either instance, the exhalation valve 50 is designed to discharge gases exhaled by a wearer of the face mask 30, from the respirator 40.
As illustrated, the face mask 30 is a full face mask, which is designed to cover the eyes, nose, and mouth of the wearer. Alternatively, the face mask 30 is a half face mask, which is designed to cover the nose and mouth of the wearer but not the eyes of the wearer.
As illustrated, the conducting means comprises a housing member 60, which may be metallic, as illustrated, or polymeric, which if polymeric may be rigid or flexible, and which is secured adhesively, as illustrated, or otherwise suitably to the respirator 40 so as to cover the exhalation valve 50, and a flexible conduit 70, which is coupled to and between the housing member 60 and an aperture 80 in the protective coat 10. The flexible conduit 70, which is coupled to the housing member 60 via a fitting 72, is arranged to conduct exhaled gases from the exhalation valve 50 of the housing member 60, through the aperture 80, into a space within the protective coat 10.
In the embodiment illustrated in Figure 2, the flexible conduit 70 extends through the outer shell 22 of the protective coat 20 and is secured at the aperture 80, via a fitting 82 receiving a locking nut 84, and opens into a space S
between layers of the protective coat 20, i.e., between the outer shell 22 and the lining system 24. United States Patent No. 5,572,991, supra, discloses a similar fitting and a similar locking nut, which are utilized similarly.
In the embodiment illustrated in Figure 3, the flexible conduit 70 extends through the outer shell 22 of the protective coat 20 and through the lining system 14 of the protective coat 20 and is secured at the aperture 80, via a fitting 86 receiving a locking nut 88, and opens into a space SS between the protective coat 20 and inner clothes C of a wearer of the protective ensemble and between the bare skin of the wearer where said skin is not covered by inner clothes C of the wearer.
Whether conducted into the space S in the embodiment illustrated in Figure 2 or into the space SS in the embodiment illustrated in Figure 3, exhaled gases conducted by the conducting means from the exhalation valve 50 of the respirator 40 help to ventilate the protective coat 20.
Claims (6)
1. A protective ensemble comprising a protective garment, a face mask, which mounts a respirator having an exhalation valve, and means for conducting exhaled gases from the exhalation valve of the respirator into a space within the protective garment;
wherein the conducting means comprises a flexible conduit, which is arranged to conduct exhaled gases from the exhalation valve into the space within the protective garment, and a housing member which is coupled to the exhalation valve and to which the flexible conduit is coupled.
wherein the conducting means comprises a flexible conduit, which is arranged to conduct exhaled gases from the exhalation valve into the space within the protective garment, and a housing member which is coupled to the exhalation valve and to which the flexible conduit is coupled.
2. The protective ensemble of claim 1, wherein the space within the protective garment is a space between layers of the protective garment.
3. The protective ensemble of claim 1, wherein the space within the protective garment is a space between an innermost layer of the protective garment and a wearer of the protective ensemble.
4. A protective ensemble comprising a protective garment, a face mask which mounts a respirator having an exhalation valve, a housing carried on the face mask and surrounding the exhalation valve, and a flexible conduit connected to the housing and arranged to conduct exhaled gases from the exhalation valve into a space within the protective garment.
5. The protective ensemble of claim 4, wherein the space within the protective garment is a space between layers of the protective garment.
6. The protective ensemble of claim 4, wherein the space within the protective garment is a space between an innermost layer of the protective garment and a wearer of the protective ensemble.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/147,085 | 2005-06-07 | ||
US11/147,085 US20060096592A1 (en) | 2004-11-11 | 2005-06-07 | Protective ensemble comprising protective garment, face mask mounting respirator, and means for conducting exhaled gases into space within protective garment |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2515268A1 CA2515268A1 (en) | 2006-12-07 |
CA2515268C true CA2515268C (en) | 2014-04-22 |
Family
ID=37498865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2515268A Expired - Fee Related CA2515268C (en) | 2005-06-07 | 2005-08-05 | Protective ensemble comprising protective garment, face mask mounting respirator, and means for conducting exhaled gases into space within protective garment |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1890776B1 (en) |
AT (1) | ATE465783T1 (en) |
CA (1) | CA2515268C (en) |
DE (1) | DE602005020985D1 (en) |
WO (1) | WO2006132649A2 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1929343A (en) * | 1930-05-16 | 1933-10-03 | Belloni Angelo | Respiratory hood |
US2006373A (en) * | 1933-04-06 | 1935-07-02 | Beriah M Thompson | Ventilated impervious suit |
SE448681B (en) * | 1984-09-21 | 1987-03-16 | Interspiro Ab | RESISTANCE TYPE RESPIRATORY |
FR2646781B1 (en) * | 1989-05-12 | 1994-02-04 | Lemasson Yves | RESPIRATORY DEVICE AND ASSEMBLY, ESPECIALLY FOR BREATHABLE ATMOSPHERE, ESPECIALLY FOR CONTAMINATED MEDIA |
BE1008240A6 (en) * | 1994-05-04 | 1996-02-20 | Moor Urbain Raphael De | Equipment for recovering body heat |
US5572991A (en) * | 1994-09-09 | 1996-11-12 | Morning Pride Mfg. Inc. | Air flush system for a firefighter's garment |
US6371116B1 (en) * | 1999-06-24 | 2002-04-16 | Todd A. Resnick | Method and apparatus for pressurizing a protective hood enclosure with exhaled air |
US6796304B2 (en) * | 2002-04-12 | 2004-09-28 | 3M Innovative Properties Company | Personal containment system with sealed passthrough |
-
2005
- 2005-07-27 DE DE602005020985T patent/DE602005020985D1/en active Active
- 2005-07-27 EP EP05782740A patent/EP1890776B1/en not_active Not-in-force
- 2005-07-27 AT AT05782740T patent/ATE465783T1/en not_active IP Right Cessation
- 2005-07-27 WO PCT/US2005/026538 patent/WO2006132649A2/en active Application Filing
- 2005-08-05 CA CA2515268A patent/CA2515268C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2006132649A2 (en) | 2006-12-14 |
WO2006132649A3 (en) | 2007-12-06 |
EP1890776B1 (en) | 2010-04-28 |
DE602005020985D1 (en) | 2010-06-10 |
ATE465783T1 (en) | 2010-05-15 |
EP1890776A2 (en) | 2008-02-27 |
CA2515268A1 (en) | 2006-12-07 |
EP1890776A4 (en) | 2008-08-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060048777A1 (en) | Apparatus and method for providing breathable air and bodily protection in a contaminated environment | |
EP0070317B1 (en) | Life support system and method of providing fresh air to enclosed areas | |
CA2775755C (en) | Emergency breathing apparatus | |
CN206525621U (en) | A kind of emergency rescue firefighting helmet | |
WO2009102127A2 (en) | Disposable gas mask | |
WO2009149507A1 (en) | Clean air receiving module and personal respiratory protective systems incorporating the module | |
CN205549276U (en) | Positive pressure air respirator and face guard with defrosting function | |
KR102046716B1 (en) | Emergency respiratory equipment or positive surviving attempt during disaster | |
US20060096592A1 (en) | Protective ensemble comprising protective garment, face mask mounting respirator, and means for conducting exhaled gases into space within protective garment | |
CN108785894A (en) | A kind of fire-fighting life-saving breathing equipment | |
KR20100001153U (en) | A mask for preventing scald | |
CN205549275U (en) | Positive pressure air respirator face guard with speech enhancement and defogging function | |
CA2515268C (en) | Protective ensemble comprising protective garment, face mask mounting respirator, and means for conducting exhaled gases into space within protective garment | |
CN106730455A (en) | Gasbag-type smog repeats filtering breathing equipment | |
CN206808757U (en) | A kind of emergency rescue firefighting helmet | |
GB2191950A (en) | Emergency escape breathing apparatus | |
RU195443U1 (en) | RESPONSE PROTECTION NODE FROM EXPOSURE TO HAZARDOUS SUBSTANCES OF CHEMICAL AND BIOLOGICAL NATURE | |
CN206525620U (en) | A kind of emergency rescue firefighting helmet | |
EP2925414B1 (en) | Improved protective breathing apparatus inhalation duct | |
RU196244U1 (en) | PROTECTIVE CAPE FOREST FIRE | |
RU166808U1 (en) | REGENERATIVE INSULATING RESPIRATOR | |
GB2367755A (en) | Emergency escape hood | |
CN214633426U (en) | Fire control self-rescue respirator with high wearing comfort level | |
CN217661163U (en) | Protective mask for fire emergency drilling | |
US11491355B1 (en) | Respiration flow apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20170807 |