WO2006132649A2 - Protective face mask for fire fighters - Google Patents

Protective face mask for fire fighters Download PDF

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Publication number
WO2006132649A2
WO2006132649A2 PCT/US2005/026538 US2005026538W WO2006132649A2 WO 2006132649 A2 WO2006132649 A2 WO 2006132649A2 US 2005026538 W US2005026538 W US 2005026538W WO 2006132649 A2 WO2006132649 A2 WO 2006132649A2
Authority
WO
WIPO (PCT)
Prior art keywords
protective
space
protective garment
wearer
ensemble
Prior art date
Application number
PCT/US2005/026538
Other languages
French (fr)
Other versions
WO2006132649A3 (en
Inventor
William L. Grilliot
Mary I. Grilliot
Original Assignee
Morning Pride Manufacturing, L.L.C.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US11/147,085 external-priority patent/US20060096592A1/en
Application filed by Morning Pride Manufacturing, L.L.C. filed Critical Morning Pride Manufacturing, L.L.C.
Priority to DE602005020985T priority Critical patent/DE602005020985D1/en
Priority to AT05782740T priority patent/ATE465783T1/en
Priority to EP05782740A priority patent/EP1890776B1/en
Publication of WO2006132649A2 publication Critical patent/WO2006132649A2/en
Publication of WO2006132649A3 publication Critical patent/WO2006132649A3/en

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

Definitions

  • 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.
  • 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.
  • SCBA self-contained breathing apparatus
  • the space is vented through openings provided between adjacent layers of the protective garment.
  • 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.
  • a protective garment such as a protective coat, protective trousers, protective overalls, or protective coveralls, is 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.
  • 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.
  • 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.
  • 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.
  • the conducting means comprises a housing member, which is coupled to the exhalation valve and to which the flexible conduit is coupled.
  • the space within the protective garment is a space between layers of the protective garment.
  • 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.
  • 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.
  • SCBA self- contained breathing apparatus
  • 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.
  • 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.
  • the protective coat conforms to NFPA 1971 "Protective Ensemble for Structural Fire Fighting.”
  • 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.
  • the respirator 40 is a powered, air-purifying respirator (PAPR) which also has a fan designed to draw
  • the exhalation valve 50 is designed to discharge gases exhaled by a wearer of the face mask 30, from the respirator 40.
  • the face mask 30 is a full face mask, which is designed to cover the eyes, nose, and mouth of the wearer.
  • 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.
  • 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.
  • the flexible conduit 70 extends through the outer shell 22 of the protective coat 20 and is secured at the aperture
  • 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 10 and between the bare skin of the wearer where said skin is not covered by inner clothes C of the wearer.
  • exhaled gases conducted by the conducting means from the exhalation valve 50 of the respirator 40 help to ventilate the protective coat 20.

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 , the disclosure of which is incorporated herein by reference, 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.
As disclosed in a prior application, a protective garment, such as a protective coat, protective trousers, protective overalls, or protective coveralls, is 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 disclosed in said application, 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
1 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 10 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

Claims
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.
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 the protective garment and inner clothes of a wearer of the protective ensemble and between the protective garment and the bare skin of the wearer where said skin is not covered by inner clothes of the wearer.
4. The protective ensemble of claim 1, 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.
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 the protective garment and inner clothes of a wearer of the protective ensemble and between the protective garment and the bare skin of the wearer where said skin is not covered by inner clothes of the wearer.
7. The protective ensemble of claim 4, wherein the conducting means comprises a housing member, which is coupled to the exhalation valve and to which the flexible conduit is coupled.
8. The pfδteetive ensemble of claim 5, wherein the conducting means comprises a housing member, which is coupled to the exhalation valve and to which the flexible conduit is coupled.
9. The protective ensemble of claim 6, wherein the conducting means comprises a housing member, which is coupled to the exhalation valve and to which the flexible conduit is coupled.
PCT/US2005/026538 2005-06-07 2005-07-27 Protective face mask for fire fighters WO2006132649A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602005020985T DE602005020985D1 (en) 2005-06-07 2005-07-27 PROTECTIVE ARRANGEMENT OF PROTECTIVE CLOTHING, FACIAL MASK WITH A RESISTANCE DEVICE AND MEANS FOR LINE OF EXHAUSTED GASES IN THE SPACE IN PROTECTIVE CLOTHING
AT05782740T ATE465783T1 (en) 2005-06-07 2005-07-27 PROTECTIVE ARRANGEMENT COMPRISING PROTECTIVE CLOTHING, FACE MASK WITH BREATHING APPARATUS AND MEANS FOR CONDUCTING THE EXHALED GASES INTO THE SPACE IN THE PROTECTIVE CLOTHING
EP05782740A EP1890776B1 (en) 2005-06-07 2005-07-27 Protective ensemble comprising protective garment, face mask mounting respirator, and means for conducting exhaled gases into space within protective garment

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
WO2006132649A2 true WO2006132649A2 (en) 2006-12-14
WO2006132649A3 WO2006132649A3 (en) 2007-12-06

Family

ID=37498865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/026538 WO2006132649A2 (en) 2005-06-07 2005-07-27 Protective face mask for fire fighters

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)

* Cited by examiner, † Cited by third party
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of EP1890776A4 *

Also Published As

Publication number Publication date
ATE465783T1 (en) 2010-05-15
EP1890776A4 (en) 2008-08-27
WO2006132649A3 (en) 2007-12-06
CA2515268A1 (en) 2006-12-07
CA2515268C (en) 2014-04-22
EP1890776B1 (en) 2010-04-28
EP1890776A2 (en) 2008-02-27
DE602005020985D1 (en) 2010-06-10

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