U.S. patent application number 13/446180 was filed with the patent office on 2012-10-18 for protective clothing having a thermally reflective liner.
This patent application is currently assigned to GLOBE HOLDING COMPANY, LLC. Invention is credited to Mark Mordecai.
Application Number | 20120260396 13/446180 |
Document ID | / |
Family ID | 47005242 |
Filed Date | 2012-10-18 |
United States Patent
Application |
20120260396 |
Kind Code |
A1 |
Mordecai; Mark |
October 18, 2012 |
PROTECTIVE CLOTHING HAVING A THERMALLY REFLECTIVE LINER
Abstract
Protective clothing for environments having high radiant heat
loads and/or high conductive heat loads is described. Protective
clothing including, but not limited to, coats and pants and methods
of making such protective clothing are provided. Protective
clothing may include a thermally reflective liner positioned
internal to an outer layer or shell, the thermally reflective liner
having a reflective surface facing the outer layer or shell.
Inventors: |
Mordecai; Mark; (Hampton,
NH) |
Assignee: |
GLOBE HOLDING COMPANY, LLC
Pittsfield
NH
|
Family ID: |
47005242 |
Appl. No.: |
13/446180 |
Filed: |
April 13, 2012 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61475774 |
Apr 15, 2011 |
|
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|
Current U.S.
Class: |
2/97 ; 2/227;
2/272 |
Current CPC
Class: |
A41D 27/02 20130101;
A41D 31/085 20190201; A41D 31/06 20190201; A41D 31/08 20190201 |
Class at
Publication: |
2/97 ; 2/227;
2/272 |
International
Class: |
A41D 3/02 20060101
A41D003/02; A41D 27/02 20060101 A41D027/02; A41D 1/06 20060101
A41D001/06 |
Claims
1. A thermally resistant coat for protecting a responder against
thermal hazards, the coat comprising: a) a flame and abrasion
resistant outer shell, the resistant outer shell comprising a torso
portion and two sleeve portions; and b) a thermally reflective
liner positioned in the thermally resistant coat internal to the
outer shell and comprising a thermally reflective surface facing
the resistant outer shell.
2. The thermally resistant coat of claim 1, wherein the thermally
reflective liner further comprises two sleeve portions.
3. The thermally resistant coat of claim 1, further comprising a
means for connecting the thermally reflective liner to the
coat.
4. The thermally resistant coat of claim 3, wherein the means for
connecting the thermally reflective liner to the coat comprises a
means for connecting the thermally reflective liner to the outer
shell.
5. (canceled)
6. The thermally resistant coat of claim 4, wherein the thermally
reflective liner is connected to the resistant outer shell at a
sleeve region of each.
7. The thermally resistant coat of claim 1, wherein the thermally
reflective surface comprises a metalized surface.
8-12. (canceled)
13. The thermally resistant coat of claim 1, wherein the thermally
reflective liner comprises at least one vent.
14. The thermally resistant coat of claim 1, wherein the thermally
reflective surface is positioned throughout the torso of the
thermally reflective liner.
15. The thermally resistant coat of claim 1, wherein the thermally
reflective surface is positioned throughout the torso and sleeves
of the thermally reflective liner.
16. The thermally resistant coat of claim 1, wherein the thermally
reflective liner is removably connected to the resistant outer
shell.
17. (canceled)
18. The thermally resistant coat of claim 1, further comprising an
insulating liner.
19-20. (canceled)
21. The thermally resistant coat of claim 1, further comprising a
moisture barrier liner.
22. The thermally resistant coat of claim 21, wherein the moisture
barrier liner is positioned in the thermally resistant coat
internal to the thermally reflective liner.
23. (canceled)
24. The thermally resistant coat of claim 4, wherein the means for
connecting the thermally reflective liner to the resistant outer
shell is a means for removably connecting the reflective liner to
the outer shell.
25. (canceled)
26. The thermally resistant coat of claim 4, wherein the means for
connecting is hook and loop, zipper, buttons, adhesive, stitching,
bonding, or snaps.
27. An emergency responder's ensemble that complies with at least
one of NFPA Standards Meeting Section 7.1 Protective Garment
Elements Performance Requirements for Both Ensembles, Section 7.3
Additional Performance Requirements for Proximity Fire Fighting
Protective Garment Elements Only, the ensemble comprising the
thermally resistant coat of claim 1.
28. A thermally resistant pair of pants for protecting a responder
against thermal hazards, the pair of pants comprising a pair of
full length pants legs each having a long dimension extending from
the top to the bottom of the leg, each pair of pants comprising: a)
a flame and abrasion resistant outer shell, and b) a thermally
reflective liner, wherein the thermally reflective liner is
positioned in the pair of pants internal to the outer shell and
comprises a thermally reflective surface facing the resistant outer
shell.
29-51. (canceled)
52. A thermally reflective liner for use as part of an emergency
responder's clothing article, the liner comprising a metalized
thermally reflective surface; wherein the liner is constructed in a
manner to be positioned in the clothing article internal to a flame
and abrasion resistant outer shell with the thermally reflective
surface facing the outer shell, and wherein the liner comprises a
fastener for removably connecting the liner to the outer shell.
53-55. (canceled)
56. The thermally reflective liner of claim 52, wherein the
clothing article is a coat and the thermally reflective liner
comprises a thermally reflective surface comprising a torso portion
and two sleeve portions; and the liner is constructed in a manner
to be positioned in the coat internal to a flame and abrasion
resistant outer shell with the thermally reflective surface facing
the resistant outer shell.
57-77. (canceled)
78. An emergency responder's ensemble that complies with at least
one of NFPA Standards Meeting Section 7.1 Protective Garment
Elements Performance Requirements for Both Ensembles, Section 7.3
Additional Performance Requirements for Proximity Fire Fighting
Protective Garment Elements Only, the ensemble comprising the
thermally reflective liner of claim 52.
79-109. (canceled)
Description
RELATED APPLICATION
[0001] This application claims the benefit under 35 U.S.C.
.sctn.119(e) of U.S. application Ser. No. 61/475,774 filed Apr. 15,
2011, the entire content of which is incorporated herein by
reference.
FIELD OF THE INVENTION
[0002] The invention relates to protective clothing and, in
particular, to thermally reflective clothing for use in
environments where high radiant heat loads and/or high conductive
heat loads may be encountered.
BACKGROUND
[0003] Firefighters and other emergency responders can be exposed
to a variety of hazardous conditions such as flame, smoke, and high
heat. Clothing used by these professionals may be designed to
protect against one or more of these specific conditions.
[0004] Clothing, such as pants and coats may also be specifically
designed and can be, for example, abrasion resistant, flame
resistant, thermally resistant, waterproof, and/or fire resistant.
As one example, gear designed for use in proximity firefighting
must be able to withstand extreme heat and should be capable of
protecting the responder as provided in NFPA 1971: "Standard on
Protective Ensembles for Structural Fire Fighting and Proximity
Fire Fighting."
SUMMARY OF THE INVENTION
[0005] According to an aspect of the invention, a thermally
resistant coat for protecting a responder against thermal hazards
is provided. The coat includes a) a flame and abrasion resistant
outer shell, that may include a torso portion and two sleeve
portions; and b) a thermally reflective liner positioned in the
thermally resistant coat internal to the resistant outer shell, and
that includes a thermally reflective surface facing the resistant
outer shell. In some embodiments, the thermally reflective liner
also includes two sleeve portions. In certain embodiments, the coat
further includes a means for connecting the thermally reflective
liner to the coat. In some embodiments, the means for connecting
the thermally reflective liner to the coat includes a means for
connecting the thermally reflective liner to the resistant outer
shell. In some embodiments, the means for connecting the thermally
reflective liner to the resistant outer shell is a means for
connecting one or more regions of the thermally reflective liner to
one or more regions of the resistant outer shell. In certain
embodiments, the thermally reflective liner is connected to the
resistant outer shell at a sleeve region of each. In some
embodiments, the thermally reflective surface includes a metalized
surface. In some embodiments, the metalized surface is an
aluminized surface. In certain embodiments, the thermally
reflective liner further includes a knit, woven, or non-woven
substrate. In some embodiments, the thermally reflective liner
further includes a knit substrate. In some embodiments, the
substrate includes polybenzimidazole and poly-paraphenylene
terephthalamide. In certain embodiments, the substrate weighs
between 2 and 8 ounces per square yard. In some embodiments, the
thermally reflective liner includes at least one vent. In some
embodiments, the thermally reflective surface is positioned
throughout the torso of the thermally reflective liner. In some
embodiments, the thermally reflective surface is positioned
throughout the torso and sleeves of the thermally reflective liner.
In certain embodiments, the thermally reflective liner is removably
connected to the resistant outer shell. In some embodiments, the
thermally reflective liner is waterproof. In some embodiments, the
coat further includes an insulating liner. In some embodiments, the
insulating liner is positioned in the thermally resistant coat
internal to the thermally reflective liner. In certain embodiments,
the insulating liner is a removable insulating liner. In some
embodiments, the coat also includes a moisture barrier liner. In
some embodiments, the moisture barrier liner is positioned in the
thermally resistant coat internal to the thermally reflective
liner. In some embodiments, the moisture barrier liner is a
removable moisture barrier liner. In certain embodiments, the means
for connecting the thermally reflective liner to the resistant
outer shell is a means for removably connecting the reflective
liner to the resistant outer shell. In some embodiments, the
thermally reflective liner includes a front left panel, a front
right panel, a back panel, and sleeves. In some embodiments, the
means for connecting includes hook and loop, zipper, buttons,
adhesive, stitching, bonding, or snaps. In certain embodiments, two
or more of the same or different types of fasteners are
included.
[0006] According to another aspect of the invention, an emergency
responder's ensemble is provided and the ensemble complies with at
least one of NFPA Standards Meeting Section 7.1 Protective Garment
Elements Performance Requirements for Both Ensembles, Section 7.3
Additional Performance Requirements for Proximity Fire Fighting
Protective Garment Elements Only, and the ensemble includes
aforementioned embodiment of a thermally resistant pair of
coat.
[0007] According to yet another aspect of the invention, a
thermally resistant pair of pants for protecting a responder
against thermal hazards is provided. The pair of pants includes a
pair of full length pants legs each having a long dimension
extending from the top to the bottom of the leg, each pair of pants
including a) a flame and abrasion resistant outer shell, and b) a
thermally reflective liner, wherein the thermally reflective liner
is positioned in the pair of pants internal to the resistant outer
shell and includes a thermally reflective surface facing the
resistant outer shell. In some embodiments, the pair of pants also
includes a means for connecting the thermally reflective liner to
the pair of pants. In some embodiments, the means for connecting is
hook and loop, zipper, buttons, adhesive, stitching, bonding, or
snaps. In some embodiments, two or more of the same or different
types of fasteners are included. In certain embodiments, the pair
of pants also includes a means for connecting the thermally
reflective liner to the resistant outer shell of the pair of pants.
In some embodiments, the thermally reflective surface includes a
metalized surface. In some embodiments, the metalized surface is an
aluminized surface. In certain embodiments, the thermally
reflective liner includes a knit, wove, or non-woven substrate. In
some embodiments, the substrate includes polybenzimidazole and
poly-paraphenylene terephthalamide. In some embodiments, the
substrate weighs up to 8 ounces per square yard. In certain
embodiments, the substrate weighs between 2 and 8 ounces per square
yard. In some embodiments, the thermally reflective liner includes
at least one vent. In some embodiments, the thermally reflective
surface is positioned throughout the pair of pants. In some
embodiments, the thermally reflective liner is removably connected
to the resistant outer shell. In certain embodiments, the thermally
reflective liner is waterproof. In some embodiments, the pair of
pants also includes an insulating liner. In some embodiments, the
insulating liner is positioned in the pair of pants internal to the
thermally reflective liner. In some embodiments, the insulating
liner is a removable insulating liner. In certain embodiments, the
pair of pants also includes a moisture barrier liner. In some
embodiments, the moisture barrier liner is positioned in the pair
of pants internal to the thermally reflective liner. In some
embodiments, the moisture barrier liner is a removable moisture
barrier liner. In some embodiments, the means for connecting the
thermally reflective liner to the resistant outer shell is a means
for removably connecting the reflective liner to the resistant
outer shell. In certain embodiments, the pair of pants also
includes a torso-covering portion. In some embodiments, the
torso-covering portion includes a flame and abrasion resistant
outer shell and a thermally reflective liner, wherein the thermally
reflective liner is positioned inside the torso-covering resistant
outer shell and has a thermally reflective surface facing the
resistant outer shell.
[0008] According to another aspect of the invention, an emergency
responder's ensemble is provided and the ensemble complies with at
least one of NFPA Standards Meeting Section 7.1 Protective Garment
Elements Performance Requirements for Both Ensembles, Section 7.3
Additional Performance Requirements for Proximity Fire Fighting
Protective Garment Elements Only, and the ensemble includes any
aforementioned embodiment of a thermally resistant pair of
pants.
[0009] According to yet another aspect of the invention, a
thermally reflective liner for use as part of an emergency
responder's clothing article is provided. The liner includes a
thermally reflective surface; wherein the liner is constructed in a
manner to be positioned in the clothing article internal to a flame
and abrasion resistant outer shell with the thermally reflective
surface facing the resistant outer shell, and wherein the clothing
article is a coat or a pair of pants. In some embodiments, the
thermally reflective liner is constructed in a manner to be
connected to the clothing article. In certain embodiments, the
thermally reflective liner is constructed in a manner to be
connected to the resistant outer shell of the clothing article. In
some embodiments, the connection is a removable connection. In some
embodiments, the clothing article is a coat and the thermally
reflective liner includes a thermally reflective surface that
includes a torso portion and two sleeve portions; and the liner is
constructed in a manner to be positioned in the coat internal to a
flame and abrasion resistant outer shell with the thermally
reflective surface facing the resistant outer shell. In certain
embodiments, the thermally reflective liner is constructed in a
manner to be connected to the coat. In some embodiments, the
thermally reflective liner is constructed in a manner to be
connected to the resistant outer shell of the coat. In some
embodiments, the connection of the reflective liner with the outer
shell of the coat is between one or more regions of the reflective
liner and the outer shell of the coat. In some embodiments, the
connection is a removable connection. In certain embodiments, the
thermally reflective liner includes a front left panel, a front
right panel, a back panel, and sleeves. In some embodiments, the
connection is by means of a fastener. In some embodiments, the
fastener is hook and loop, zipper, buttons, adhesive, stitching,
bonding, or snaps. In some embodiments, two or more of the same or
different types of fasteners are included. In certain embodiments,
the thermally reflective surface is positioned throughout the torso
and sleeves of the thermally reflective liner. In some embodiments,
the thermally reflective surface is positioned throughout the
thermally reflective liner. In some embodiments, the clothing
article is a pair of pants. In certain embodiments, the pair of
pants further includes a torso-covering portion. In some
embodiments, the torso-covering portion includes a flame and
abrasion resistant outer shell and a thermally reflective liner,
wherein the thermally reflective liner is positioned in the pair of
pants and the torso portion internal to the resistant outer shell
and has a thermally reflective surface facing the resistant outer
shell. In some embodiments, the thermally reflective surface
includes a metalized surface. In some embodiments, the metalized
surface is an aluminized surface. In certain embodiments, the
thermally reflective liner also includes a knit, woven, or
non-woven substrate. In some embodiments, the substrate includes
polybenzimidazole and poly-paraphenylene terephthalamide. In some
embodiments, the substrate weights between 2 and 8 ounces per
square yard. In certain embodiments, the substrate weighs up to 7
ounces per square yard. In some embodiments, the thermally
reflective liner includes at least one vent. In some embodiments,
the thermally reflective liner is removably connected to the
resistant outer shell. In some embodiments, the thermally
reflective liner is waterproof.
[0010] According to another aspect of the invention, an emergency
responder's ensemble is provided and the ensemble complies with at
least one of NFPA Standards Meeting Section 7.1 Protective Garment
Elements Performance Requirements for Both Ensembles, Section 7.3
Additional Performance Requirements for Proximity Fire Fighting
Protective Garment Elements Only, and includes any aforementioned
embodiment of a thermally reflective liner.
[0011] According to yet another aspect of the invention, methods of
making a thermally resistant clothing article for protecting a
responder against thermal hazards are provided. The methods include
positioning a thermally reflective liner in the clothing article
internal to a flame and abrasion resistant outer shell, wherein the
thermally reflective liner includes a thermally reflective surface
that faces the resistant outer shell, and wherein the clothing
article is a pair of pants or a coat for protecting the responder.
In some embodiments, the methods also include connecting the
thermally reflective liner to the clothing article. In certain
embodiments, the methods also include connecting the thermally
reflective liner to the flame and abrasion resistant outer shell.
In some embodiments, the clothing article is a coat and the thermal
reflective surface includes a torso portion and two sleeve
portions. In some embodiments, connecting the thermally reflective
liner to the resistant outer shell includes connecting a portion of
the thermally reflective liner to a portion of the resistant outer
shell. In certain embodiments, the thermally reflective liner is
connected to the resistant outer shell at one or more regions of
each. In some embodiments, connecting the thermally reflective
liner to the resistant outer shell is removably connecting the
thermally reflective liner to the resistant outer shell. In some
embodiments, the thermally reflective liner includes a front left
panel and a front right panel. In some embodiments, the connection
between the thermally reflective liner and the resistant outer
shell includes a fastener. In certain embodiments, the fastener is
hook and loop, zipper, buttons, adhesive, stitching, bonding, or
snaps. In some embodiments, two or more of the same or different
types of fasteners are included. In certain embodiments, the
thermally reflective surface is positioned throughout the torso and
sleeves of the thermally reflective liner. In some embodiments, the
thermally reflective surface is positioned throughout the thermally
reflective liner. In some embodiments, the clothing article is a
pair of pants. In certain embodiments, the pair of pants also
includes a torso-covering portion, which may also include
arm-covering portions. In some embodiments the pair of pants is
part of a pair of overalls. In some embodiments, the torso-covering
portion includes a flame and abrasion resistant outer shell and a
thermally reflective liner, wherein the thermally reflective liner
is positioned in the pair of pants and in the torso portion
internal to the resistant outer shell and has a thermally
reflective surface facing the resistant outer shell. In some
embodiments, the thermally reflective surface includes a metalized
surface. In some embodiments, the metalized surface is an
aluminized surface. In certain embodiments, the thermally
reflective liner also includes a knit, woven, or non-woven
substrate. In some embodiments, the substrate includes
polybenzimidazole and poly-paraphenylene terephthalamide. In some
embodiments, the substrate weights up to 8 ounces per square yard.
In certain embodiments, the substrate weighs between 2 and 8 ounces
per square yard. In some embodiments, the thermally reflective
liner includes at least one vent. In some embodiments, the method
also includes positioning an insulating liner in the clothing
article, internal to the resistant outer shell. In some
embodiments, the insulating liner is positioned in the clothing
article internal to the thermally reflective liner. In certain
embodiments, the insulating liner is a removable insulating liner.
In some embodiments, the method also includes positioning a
moisture barrier liner in the clothing article, internal to the
resistant outer shell. In some embodiments, the moisture barrier
liner is positioned in the clothing article internal to the
thermally reflective liner. In some embodiments, the moisture
barrier liner is a removable moisture barrier liner. In certain
embodiments, the thermally reflective liner is removably connected
to the resistant outer shell. In some embodiments, the thermally
reflective liner is waterproof.
[0012] According to another aspect of the invention, an emergency
responder's ensemble is provided that complies with at least one of
NFPA Meeting Section 7.1 Protective Garment Elements Performance
Requirements for Both Ensembles, Section 7.3 Additional Performance
Requirements for Proximity Fire Fighting Protective Garment
Elements Only, and the ensemble includes a thermally resistant
clothing article made with the method of any aforementioned
embodiment.
[0013] The subject matter of this application may involve, in some
cases, interrelated products, alternative solutions to a particular
problem, and/or a plurality of different uses of a single system or
article.
[0014] The present invention is not intended to be limited to a
system or method that must satisfy one or more of any stated
objects or features of the invention. It is also important to note
that the present invention is not limited to the exemplary or
primary embodiments described herein. Modifications and
substitutions by one of ordinary skill in the art are considered to
be within the scope of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 shows a front view of one embodiment of a thermally
resistant coat of the invention.
[0016] FIG. 2 shows a front view of one embodiment of a thermally
reflective coat liner of the invention. The thermally reflective
surface 116 is external to substrate 118, which is shown in a
cutaway view.
[0017] FIG. 3 shows an exploded and cutaway front view of one
embodiment of a thermally resistant pair of pants of the
invention.
[0018] FIG. 4 shows an exploded and cutaway front view of one
embodiment of a thermally reflective pair of pants liner of the
invention.
[0019] FIG. 5 shows a section of thermally reflective liner
materials according to one embodiment of the invention.
[0020] FIG. 6 shows a section of thermally reflective liner
materials having vents according to one embodiment of the
invention.
[0021] FIG. 7 shows views of layers of materials of the invention.
FIG. 7A shows an exploded view of an outer layer or shell, an inner
liner, and a thermally reflective liner according to one embodiment
of the invention. FIG. 7B shows an outer layer, an inner liner, and
a thermally reflective liner in contact with one another according
to one embodiment of the invention.
DETAILED DESCRIPTION
[0022] There are two major types of thermally protective clothing
worn by emergency responders such as firefighters and other
personnel working near fires: proximity protective clothing and
structurally protective clothing. Proximity protective clothing is
designed to be worn by responders working close to large open flame
fires such as those caused by aviation fuel fires. Proximity
protective clothing requires specialized thermal protection due to
the high radiant heat loads that can be encountered. Structural
protective clothing is the most commonly utilized thermally
protective clothing and is utilized by responders to make entry
into burning buildings. Structural protective clothing provides
limited thermal protection, provides a moderate level of physical
hazard protection, and may clothing with an outer layer (also
referred to herein as a "shell") that is flame and abrasion
resistant.
[0023] In a conventional construction, proximity protective
clothing of the type satisfying NFPA 1971 has a metalized external
surface to reflect radiant heat away from the responder. The
metalized surface may be mechanically less durable than other
materials used on the exterior of protecting clothing, such as
abrasion-resistant materials, and may be more susceptible to
punctures, cuts, and abrasions thus resulting in a shorter useful
life for the protective clothing. Also, the external metalized
surface can be difficult to keep clean because scrubbing the
material can cause extensive wear and degradation of the surface.
Unfortunately, when the metalized surface is damaged and/or becomes
dirty, it loses its ability to reflect heat, and the responder's
life and physical safety is put at greater risk. In addition,
clothing having a metalized exterior surface may be less favored by
responders when given a choice of a coat or pants with a flame and
abrasion-resistant outer surface or a coat or pants with a
metalized outer surface.
[0024] Structural protective clothing, such as pants and coats, may
have an external surface made of a flame and abrasion-resistant
material. Compared to metalized materials, the external materials
used in structural protective clothing such as pants and coats can
be durable, easy to clean, and may be more comfortable to wear than
clothing having a metalized outer surface. Structural protective
clothing is generally better at withstanding many of the mechanical
hazards encountered by responders that might otherwise damage a
metalized outer surface on proximity protective clothing.
[0025] The thermally resistant protective clothing described
herein, a coat or pair of pants for example, may be used by any
person exposed to, or potentially exposed to, a heat source.
Protective clothing of the invention may be worn by a responder or
firefighter while extinguishing or controlling a fire or while
performing a rescue from a burning structure or location. The
clothing may also be used by an industrial worker, for example a
kiln operator or maintenance person, to provide protection from
intense heat and/or flame. As another example, thermally resistant
clothing of the invention may be used by military servicemen
exposed to a fire in the line of duty.
[0026] In one aspect of the invention, a protective clothing
article is disclosed that has a thermally reflective liner located
internal to an outer shell layer of the clothing, and not as the
outermost layer of the clothing. The thermally reflective liner
comprises a reflective surface that faces the outer shell layer of
the clothing. The protective clothing of the invention may be any
type of clothing such as a coat, jacket, pants, or overalls. Thus,
a thermally resistant coat, jacket, pants, overalls, etc. of the
invention includes a thermally reflective liner that is internal to
an outer shell layer of the clothing, and the thermally reflective
liner's thermally reflective surface is not the external surface of
the coat, jacket, pants, or overalls, etc. To an observer, the
clothing may appear to be conventional structural turnout gear.
Much of the description herein is directed to a thermally
reflective liner and it is understood that the liner may be
removably included with other layers such as a substantially
non-reflective outer shell and/or an inner thermal liner to provide
a coat or pants suitable for use by firefighters, emergency
responders, or others in a high-heat environment. A coat and/or
pants of the invention may be part of a clothing ensemble that
includes, for example, coat, pants, boots, and/or gloves for
protection of the wearer. For example, an ensemble may include
pants (also referred to as trousers) such as those described in
U.S. patent application Ser. No. 11/615,262, entitled PROTECTIVE
APPAREL FOR FIREFIGHTERS AND EMERGENCY RESPONDERS, but that include
an internal, thermally reflective liner.
[0027] In an embodiment of the invention, a thermally protective
coat or pair of pants can be a structural protective coat or pair
of pants that includes a thermally reflective liner inside a
substantially non-reflective external shell, wherein the thermally
reflective liner has a metalized, reflective surface facing the
outer shell of the coat or pair of pants. A structural protective
coat or pair of pants having an internal, thermally reflective
liner, can be durable and easy to clean, and can provide a
responder, firefighter, or other wearer with the proper fit and
capacity for ease of movement. The gear can be surprisingly
reflective even though the reflective layer is not the outermost
layer. A protective coat or pair of pants of the invention can
satisfy the requirements of NFPA 1971 (2007) for proximity
firefighting.
Overview of Coat Features
[0028] In one aspect of the invention, a thermally resistant coat
for protecting a responder against thermal hazards comprises (a) a
flame and abrasion resistant outer shell having a torso portion and
two sleeve portions; and (b) a thermally reflective liner having a
thermally reflective surface. The thermally reflective liner may
comprise a torso portion and two sleeve portions. The sleeve
portion may be open and unfitted at the wrist or may be configured
to be closed or closable around the wrist, for example with
elastic, snaps or any suitable alternative means. The torso portion
of a thermally reflective liner of the invention may comprise a
front left panel, a front right panel and a back panel. In some
embodiments of the invention, the coat can be donned as a
pullover.
[0029] A thermally resistant coat of the invention may have a
thermally reflective liner positioned in the coat internal to an
abrasion resistant outer shell in a manner wherein the thermally
reflective surface of the thermally reflective liner faces the
outer shell of the coat. In some embodiments of the invention, the
thermally reflective surface may be positioned throughout the torso
and/or sleeves of the thermally reflective liner. In other
embodiments of the invention, the thermally reflective surface may
be positioned only in portions of the torso and/or sleeves of the
thermally reflective liner. In some embodiments of the invention,
the thermally reflective liner is positioned in one or more
specific sections of the coat and is not positioned in all sections
of the interior of the coat. In certain embodiments the thermally
reflective liner is positioned throughout all sections of the
interior of the coat, providing a barrier between the body and the
exterior.
[0030] A thermally resistant coat of the invention may also include
a means for connecting the thermally reflective liner to the coat,
which may be a means for connecting the thermally reflective liner
to the abrasion resistant outer shell or may be a means for
connecting the thermally reflective liner to an alternative layer
of the coat, such as an insulating liner and/or a
moisture-resistant liner, and/or another liner.
[0031] In some embodiments, the portion of the thermally reflective
liner that faces inwardly and contacts the wearer's skin may
include a material chosen for comfort, e.g., synthetic fleece or
other fabric, woven or non-woven, chosen to avoid irritation and to
be comfortable. In some embodiments, there is only one point of
attachment between the thermally reflective liner and the coat or
outer shell, with the rest of the thermally reflective liner
remaining unattached. If desired, the thermally reflective liner
may be donned by the responder prior to donning the outer shell,
and the shell may be removed by the responder without removing the
thermally reflective liner.
[0032] In other embodiments, the thermally reflective liner may be
attached to the outer shell at least at the sleeves or other
region. Other regions where the thermally reflective liner may be
attached to the outer shell include, but are not limited to at the
back of the torso, at the neck, at the front of the torso, etc. For
example, a thermally reflective liner can be permanently (e.g.,
sewn) or temporarily (e.g., zippered, buttoned, hook-and-looped,
snapped, etc.) attached to the sleeve or other region of a coat. An
attachment to a sleeve of a coat can be an attachment to one or
both sleeves of the coat's outer shell. Attachment of a thermally
reflective liner at the sleeves may or may not be accompanied by
attachment at another region of the coat. If permanently attached
at the sleeves or other region, the thermally reflective liner is
not considered to be a removable thermally reflective liner. In
such cases, the thermally reflective liner and the outer shell to
which the thermally reflective liner is permanently attached may
function as a single garment and may be donned and removed as
one.
[0033] A thermally reflective liner of a coat of the invention may
alternatively or additionally be connected to one or more liners
that are within the outer shell of the coat. Examples of additional
layers include, but are not limited to, an insulating layer, a
moisture-resistant layer, etc.
[0034] A thermally resistant coat of the invention may include a
hood that is comprised of a thermally reflective layer. Such a hood
may be permanently attached (integral) to the torso portion of a
thermally reflective liner or may be attached via a reversible
fastener (modular). When not deployed, the hood may be stored in
space between thermally reflective liner and the outer shell of the
thermally protective coat. Although a pocket or storage area may be
added, the hood may slide comfortably between the liner and the
shell, being hidden and almost unnoticeable by the wearer. The
lower portion of a protective coat of the invention may overlap a
pair of protective pants, which may include an extension above the
waist.
[0035] FIG. 1 provides a view of one aspect of a coat 100 that
includes both a liner 110 and an outer shell 120. Outer shell 120
may be flame, water and/or abrasion resistant and may be made from
known materials used to make outer shells. Thermally reflective
liner 110 may be shaped and constructed similarly to a conventional
jacket, pullover, anorak, or coat, having two sleeves and a torso
section. The thermally reflective liner 110 is positioned internal
to an outer resistant shell 120. The coat, when equipped with a
thermally reflective liner, should incorporate enough of the liner
that the wearer is protected from radiant heat. In some
embodiments, the thermally reflective liner is at least adequate to
provide a level of protection to meet NFPA standard 1971.
[0036] As shown in the non-limiting example of a thermally
resistant coat of FIG. 1, liner 110 may include left front portion
(panel) 112 and right front portion (panel) 114. The opening
between front portions 112 and 114 need not extend the full length
of the liner and may extend, for example, half way or less from the
neck down resulting in a pullover type design. The thermally
reflective liner includes an integral thermally reflective surface
116, which faces the outer shell of the coat. Fasteners, for
example in the sleeves or torso area, may be used to secure the
liner to the shell. Shell 120 may include shell zipper halves 142
and 144 and may also include flap 146 that can help to seal the
zipper through the use of a hook and loop fastener, or other
suitable fastener.
[0037] It will be understood that a thermally resistant coat 100 of
the invention may optionally include one or more additional liners
such as a moisture-resistant liner, or an insulating liner. The one
or more additional liners can be positioned internal to an outer
shell of a coat of the invention a position that is internal to or
external to a thermally reflective liner of the invention.
[0038] FIG. 2 shows a thermally reflective liner 110 for a coat,
the liner 110 having a thermally reflective surface 116. The
cutaway view shows the substrate 118 that supports the thermally
reflective surface 116. An embodiment of the invention such as that
illustrated in FIG. 2 may also include a means to tighten and/or to
fit the sleeves at the wearer's wrists. It will be understood that
the sleeve portion of a thermally reflective liner of the invention
may be open and unfitted at the wrist or may be configured to be
closable around the wrist, for example with elastic, snaps,
cording, or any suitable alternative means. A thermally resistant
coat of the invention may, in addition to a thermally reflective
liner of the invention, optionally include one or more additional
liners such as a moisture-resistant liner, or an insulating liner.
It will be understood that one or more additional liners can be
positioned internal to an outer shell of a coat at a position that
is internal to or external to a thermally reflective liner 110 of
the invention.
[0039] Some aspects of the invention provide an emergency
responder's ensemble that complies with NFPA Standard 1971, the
ensemble comprising a thermally resistant coat that includes a
thermally reflective liner positioned internal to an outer shell of
the coat, wherein the thermally reflective liner comprises a
thermally reflective surface that faces the outer shell of the
coat.
Overview of Pant Features
[0040] A thermally resistant article of clothing of the invention
may be a thermally resistant pair of pants for protecting a
responder against thermal hazards. Pants of the invention may
comprise a pair of full length pants legs each having a long
dimension extending from the top to the bottom of the leg of the
wearer. In some embodiments the pant leg length may be longer or
shorter than the leg of the wearer. Pants of the invention may also
comprise a seat, a front portion and a waist portion.
[0041] A pair of pants of the invention may comprise a flame and
abrasion resistant outer shell, and a thermally reflective liner
positioned in the pants internal to the outer shell, with the
thermally reflective liner comprising a thermally reflective
surface facing the resistant outer shell. In some aspects of the
invention, a thermally resistant pair of pants may include a
thermally reflective liner that comprises a thermally reflective
surface disposed on the outside of the thermally reflective liner.
In some embodiments of the invention, the thermally reflective
surface may be positioned throughout the entirety of the pants. In
other embodiments of the invention, the thermally reflective
surface may be positioned only in portions of the pants, such as in
the seat, front, and/or pant leg portion of the thermally
reflective liner. In some embodiments of the invention, the
thermally reflective liner is included in one or more specific
sections of the pants and is not included throughout all sections
of the interior of the pair of pants. In certain embodiments of the
invention, the thermally reflective liner is included throughout
all sections of the interior of the pants.
[0042] A thermally resistant pair of pants of the invention may
also include a means for connecting the thermally reflective liner
to the pants. A connecting means may be a means for connecting the
thermally reflective liner to the resistant outer shell of the
pants. A thermally reflective liner of a pair of pants of the
invention may be permanently or removably connected to the pants.
Thus, the means for connecting may be a permanent means (e.g.,
sewing, stitches, etc.) or may be a removable means, (e.g., snaps,
zipper, buttons, hook-and-loop, etc.). In some embodiments, the
either permanent or removable connection is a connection between
the thermally reflective liner and the outer shell of the thermally
resistant pants. A connection between the thermally reflective
liner and an outer shell can be at one or more locations in the
outer shell, such as at or near the bottom of a pant leg, along an
inseam of a pant leg, at the waist of the pants, etc. For example,
an outer shell of a thermally resistant pair of pants and a
corresponding thermally reflective liner may be connected to each
other around their peripheries or detachably connected with
fastening means such as snap fasteners or hook and loop strips that
can be located in spaced positionings around their corresponding
peripheries. A thermally reflective liner of a pair of pants of the
invention may alternatively or additionally be connected to one or
more liners that are within the outer shell of the pants. Examples
of additional layers include, but are not limited to, an insulating
layer, a moisture-resistant layer, etc.
[0043] A thermally resistant pair of pants of the invention may
also include a torso-covering portion. For example, with the
torso-covering portion included, the pants may be a pair of
overalls. A thermally resistant pair of pants, such as overalls may
include a torso-covering portion that includes a flame and abrasion
resistant outer shell and a thermally reflective liner. In such a
thermally resistant pair of pants, the thermally reflective liner
may be positioned inside the torso-covering resistant outer shell
as well as in the pant section, with the thermally reflective liner
including a thermally reflective surface that faces the resistant
outer shell.
[0044] FIG. 3 provides a view of one aspect of a pair of pants 10
that includes both a thermally reflective liner 60 and an outer
shell 20. Outer shell 20 may be flame, water and/or abrasion
resistant and may be made from known materials used to make outer
shells for protective clothing. Thermally reflective liner 60 may
be shaped and constructed similarly to a conventional pair of
pants, trousers, or overalls; e.g., having two legs, a front
section, a seat section, a waist section, and in the case of
overalls, also including a torso section. The thermally reflective
liner 60 is positioned internal to an outer resistant shell 20. The
pair of pants, when equipped with a thermally reflective liner, may
incorporate enough of the liner that the wearer is protected from
radiant heat. In some embodiments, the thermally reflective liner
is at least adequate to provide a level of protection to meet NFPA
standard 1971.
[0045] The non-limiting example of a thermally resistant pair of
pants shown in FIG. 3 comprises an outer shell 20 made of a fire
protective material and a removable liner 60 which includes an
integral thermally reflective surface 70, which faces the outer
shell of the pants. The thermally reflective liner 60 and the outer
shell 20 can be permanently or removably connected to each other. A
thermally resistant pair of pants 10 of the invention may
optionally include one or more additional liners such as a
moisture-resistant liner, or an insulating liner. An exemplary
liner 80 is show internal to a thermally reflective liner 60. It
will be understood that one or more additional liners can be
positioned internal to an outer shell of a pair of pants at a
position that is internal to or external to a thermally reflective
liner of the invention.
[0046] FIG. 4 shows a non-limiting example of internal liners 90
that may be included in a thermally reflective pair of pants. A
thermally reflective liner 60, which has a thermally reflective
surface 70, is shown. Optional snap fasteners 64 may be included to
connect the liner to the outer shell and/or to one or more
additional liners. In addition to a thermally reflective liner, a
thermally resistant pair of pants of the invention may optionally
include one or more liners such as a moisture-resistant liner, or
an insulating liner. An exemplary additional liner 80 is shown
internal to a thermally reflective liner 60. It will be understood
that one or more additional liners can be positioned internal to an
outer shell of a thermally resistant pair of pants at a position
that is internal to or external to a thermally reflective liner 60
of the invention.
[0047] Some aspects of the invention provide an emergency
responder's ensemble that complies with NFPA Standard 1971, the
ensemble comprising a thermally resistant pair of pants that
includes a thermally reflective liner positioned internal to an
outer shell of the pair of pants, wherein the thermally reflective
liner comprises a thermally reflective surface that faces the outer
shell of the pair of pants.
Clothing Articles--General Features
[0048] The outer shell of an article of clothing (e.g., coat, pair
of pants, overalls, etc.) of the invention may be made of any
flexible, heat resistant, and abrasion-resistant material and may
be made from known materials used to make outer shells for
protective clothing. Examples of materials from which an outer
shell can be made include, but are not limited to, meta and
para-aramids (NOMEX and KEVLAR), polybenzimidaxazole (PBI),
polybenzobisoxazole (PBO), melamine (BASOFIL), and blends thereof.
Additional materials suitable for making an outer shell for a
thermally resistant article of clothing of the invention are
available and known by those skilled in the art. An outer shell may
include portions of light-reflective material for added visibility
at night and in other dark conditions. An outer shell of an article
of clothing of the invention is made of a material that is
substantially non-thermally reflective.
[0049] A thermally reflective surface of a thermally reflective
liner of the invention may be any appropriate thermally reflective
material, such as a metalized material. For example, the thermally
reflective liner may be a substrate supporting an aluminized film.
The substrate may be a flexible material and in one embodiment the
substrate is a combination of polybenzimidazole (PBI) and
poly-paraphenylene terephthalamide, for example, (KEVLAR.RTM.). In
a further embodiment, the substrate may be about 33 percent PBI and
about 67 percent meta-aramid and weigh up to 2, 3, 4, 5, 6, 7, 8,
or more ounces per square yard, including all weights in between
the integers listed. A substrate in a thermally reflective liner of
the invention can be a knit, woven, or non-woven substrate. The
thermally reflective material can be applied to the substrate using
any suitable means, including, but not limited to: coating,
lamination, impregnation, casting, or depositing on the substrate.
The thermally reflective material may weigh, for example, between
0.25 ounces and 2 ounces per square yard, including all weights
between 0.25 and 2.
[0050] In some embodiments of the invention, the reflective liner
may be a PBI and Kevlar knit substrate laminated with an aluminized
film. The aluminized film may be of any weight and thickness that
is capable of being used as a middle layer and is capable of
reflecting or preventing the transfer of enough heat and thermal
radiation to meet the requirements of NFPA 1971. The aluminized
film may be coated or uncoated and may include a transparent
coating. The reflective film itself may have a thickness of, for
example, between about 0.01 and 0.5 mm. In some embodiments, the
aluminum film may have a thickness between about 0.05 and 0.1 mm.
In some cases, the film (void of any backing material) may weigh
about two ounces per square yard, so that the combined weight of
the knit substrate and aluminized film layer may be about 7.5
ounces per square yard (255 g/m.sup.2). In a further embodiment,
the thermally reflective liner, including an aluminized film and a
knit substrate, is about 0.9 mm thick. A suitable thermally
reflective liner material is available from Gentex Corporation and
is referred to as PA255 Jersey. It includes a GENTEX.RTM. Dual
Mirror Aluminized Fabric on a PBI/Kevlar backing substrate.
[0051] A thermally reflective liner of the invention may be a
reflector of radiant heat (infrared light) and can also serve to
limit heat conduction. The reflective liner of the invention
reflects heat, which as used herein, means to throw back or cast
back heat from the thermally reflective liner. Different types of
thermally reflective materials that can be used to form the
thermally reflective liner may reflect more than 30%, more than
35%, more than 40%, more than 45%, more than 50%, more than 55%,
more than 60%, more than 65%, more than 70%, more than 75%, more
than 80%, more than 85%, more than 90%, or more than 95% of the
radiant heat that is incident to the material. These materials can
often be identified by their ability to reflect visible light and
may reflect more than 50% of the visible light that is incident to
the material. Examples of thermally reflective materials are metal
coated fabrics and metallic foils. Thermally reflective materials
may be flexible so that they can, for instance, conform to the
movements of the clothing article, without cracking or restricting
movement of the wearer. In some aspects of the invention, a
thermally reflective liner of a thermally resistant article of
clothing of the invention may be waterproof or moisture
resistant.
[0052] In one embodiment a thermally resistant article of clothing
as shown in FIG. 5, may include thermally reflective liner 150 made
of an aluminized film 150a and a knit substrate 150b. Aluminized
film 150a includes a reflective surface 190. When incorporated into
thermally protective clothing of the invention, thermally
reflective liner material 150 can be positioned with reflective
surface 190 facing the exterior surface of the clothing.
[0053] FIG. 6 shows an embodiment of the invention in which
thermally reflective liner 150 defines vents 210 to facilitate the
flow of water vapor and other gases through thermally reflective
liner 150. Vents 210 may be circular, as shown, but they may have
any other shape, such as rectangular, square, or triangular, etc.
and may be randomly placed or may be in a pattern. Vents may be of
any appropriate size and may be as small as about 1 micron, and
upward in size from 1 micron as appropriate. For example, a vent
may be from one micron up to 4 mm or more across, including any
size between 1 micron and 4 mm.
[0054] FIGS. 7A and 7B further illustrate materials used for
construction of a portion of an article of clothing of the
invention. FIG. 7A shows outer layer or shell 130 having an outer
surface 160, inner liner 140, and thermally reflective liner
material 150 separated from one another. The thermally reflective
liner 150 is comprised of a thermally reflective layer 150a and a
substrate material 150b. As indicated for this embodiment, a
thermally reflective liner 150 is positioned between outer layer or
shell 130 and inner liner 140. A thermally reflective surface 190
is shown on the external-facing surface of the thermally reflective
liner 150. FIG. 7B shows outer layer or shell 130, having an outer
surface 160, inner liner 140, and thermally reflective liner 150 in
contact with one another. The thermally reflective liner 150 is
comprised of a thermally reflective layer 150a and a substrate
material 150b Inner liner 140 is optional and in some embodiments
of the invention no inner liner is present and the clothing article
includes an outer layer or shell and a thermally reflective liner,
which may be separated or connected to one another.
[0055] Thermally resistant articles of clothing may be constructed
using one or more materials illustrated in FIGS. 5-7 herein, such
as a thermally resistant liner 150, an outer shell 130, an inner
liner 140, etc.
[0056] A thermally resistant article of clothing of the invention
may, in addition to the thermally reflective liner, also include an
insulating liner and/or a moisture barrier liner, either or both of
which may be positioned in the article of clothing of the
invention. In some embodiments, an insulating and/or moisture
barrier liner may be positioned internal to the thermally
reflective liner. Such an insulating liner and/or moisture barrier
liner may be removable from the thermally resistant clothing of the
invention or may be permanently attached to the article of
thermally resistant clothing.
[0057] Thus, an article of protective clothing of the invention may
include one or more inner liners located between the thermally
reflective liner and the interior of the clothing. The inner liner
may be made of one, two, three, or more sub-layers that may be
independent of each other, or may be adhered together. An inner
liner may be either permanently or removably connected to the
thermally reflective liner or may be independent of the thermally
reflective liner and have no connection thereto. In some
embodiments of the invention, the clothing may include one, two,
three, or more independent, unbound, inner liners positioned
between the thermally reflective liner and the interior of the
clothing.
[0058] An inner liner may include one or more thermally insulating
materials. As a non-limiting example, the inner liner may include
one or more layers of non-woven fabric comprised of 65% meta-aramid
material (such as NOMEX.RTM.) and about 35% poly-paraphenylene
terephthalamide (such as KEVLAR.RTM.).
[0059] In some embodiments of the invention, an inner liner may
include a moisture barrier. The moisture barrier liner may be
facing outwardly. Additionally, the thickness of the inner liner
may be similar to other thermal liners used in protective clothing.
The thickness of internal liners can be achieved through the use of
one, two, three or more thermal liners. Two or more thermal
insulating liners may be separate from each other and can include
an air layer between the two thermal insulating liners. This
construction can provide light, flexible, comfortable thermally
protective clothing that can be used in proximity firefighting, and
other high-heat activities.
[0060] The thermally reflective liner may be physically attached to
an outer liner and/or shell, and/or physically attached to an inner
liner. In some embodiments the thermally reflective liner may be
simply placed between the outer and inner layers (e.g. liner,
shell) and may "float" between them. As used herein the term
"float" means the layers are able to move independently of each
other. If the thermally reflective liner is attached to an article
of protective clothing of the invention, the thermally reflective
liner may be fixed to either or both of an inner and outer layer
using, for example, adhesive, stitching, staples, rivets, buttons,
snaps, zipper, hook-and-loop, or other mechanical fasteners.
Methods of Making--Clothing
[0061] Methods of making thermally resistant clothing articles for
protecting a responder or wearer, such as a high-heat worker,
against thermal hazards are also described herein. Methods may
include fabricating thermally reflective liner material, cutting
the material to the desired shape for the article of clothing to be
prepared, constructing from the material a liner shaped for the
article of clothing, and positioning the thermally reflective liner
in the clothing article internal to a flame and abrasion resistant
outer shell. As described herein, the thermally reflective liner
comprises a thermally reflective surface that faces the outer layer
or shell. The clothing article so produced may be a pair of pants,
overalls, a coat, etc. for protecting the responder. Methods of the
invention may include connecting the thermally reflective liner to
the clothing article. In some embodiments the connection between
the thermally reflective liner and the clothing article is a
connection between the thermally reflective liner and the flame and
abrasion resistant outer shell. Methods of the invention may
include removably connecting a thermally reflective liner to a
resistant outer shell.
EXAMPLES
[0062] NFPA 1971, 2007 Edition Section 7.3 Additional Performance
Requirements for Proximity Fire Fighting Protective Garment
Elements Only lists the performance requirements required in
addition to meeting the requirements in Section 7.1 Protective
Garment Elements Performance Requirements for Both Ensembles. These
include Section 8.52 Radiant Protective Performance Test with a
value of not less than 20 seconds, Section 8.54 Wet Flex Test
showing no signs of cracking or delamination, Section 8.55 Adhesion
After Wet Flex--Tape Method showing no evidence of separation,
Section 8.56 Flex at Low Temperature showing no evidence of
breaking, shattering, or cracking, and Section 8.57 Resistance to
High-Temperature Blocking showing no blocking
Test 1
[0063] One embodiment of a coat comprising a thermally reflective
liner as described elsewhere herein is tested and found to comply
with the test requirements of NFPA 1971, 2007 Edition Section 7.3;
Section 7.1; Section 8.52; Section 8.54; Section 8.55; Section
8.56; and Section 8.57.
[0064] The performance of the coat during the section tests is
better than expected as it was believed that the reflective liner
had to be on the outer surface of the clothing to meet the
requirements of NFPA 1971. Outer layers, such as the outer shell of
a coat or pants, are generally considered to be opaque and
therefore were expected to interfere with the ability of the
reflective surface to reflect back infrared radiation. But the data
from the tests suggests otherwise. Specifically, the thermally
reflective liner reflects away from the coat a sufficient amount of
the radiant heat received by the coat to allow the coat to pass the
tests. The internal reflective liner allows the coat to pass the
tests. A similar coat without the thermally reflective liner, but
with an additional thermal liner of greater thickness instead,
fails the tests. Therefore, the use of an internally positioned
thermally reflective liner improves the conductive heat resistance
of the coat so it is able to meet the requirement.
Test 2
[0065] One embodiment of pair of pants comprising a thermally
reflective liner as described elsewhere herein is tested and found
to comply with the test requirements of NFPA 1971, 2007 Edition
Section 7.3; Section 7.1; Section 8.52; Section 8.54; Section 8.55;
Section 8.56; and Section 8.57.
[0066] The performance of the pair of pants during the section
tests is better than expected as it was believed that the
reflective liner had to be on the outer surface of the clothing to
meet the requirements of NFPA 1971. Outer layers, such as the outer
shell of a coat or pants, are generally considered to be opaque and
therefore were expected to interfere with the ability of the
reflective surface to reflect back infrared radiation. But the data
from the tests suggests otherwise. Specifically, the thermally
reflective liner reflects away from the pair of pants a sufficient
amount of the radiant heat received by the pair of pants to allow
the pair of pants to pass the tests. The internal reflective liner
allows the pair of pants to pass the tests described above. A
similar pair of pants without the thermally reflective liner, but
with an additional thermal liner of greater thickness instead,
fails the tests. Therefore, the use of an internally positioned
thermally reflective liner improves the conductive heat resistance
of the pair of pants so it is able to meet the requirement.
[0067] While several embodiments of the present invention have been
described and illustrated herein, those of ordinary skill in the
art will readily envision a variety of other means and/or
structures for performing the functions and/or obtaining the
results and/or one or more of the advantages described herein, and
each of such variations and/or modifications is deemed to be within
the scope of the present invention. More generally, those skilled
in the art will readily appreciate that all parameters, dimensions,
materials, and configurations described herein are meant to be
exemplary and that the actual parameters, dimensions, materials,
and/or configurations will depend upon the specific application or
applications for which the teachings of the present invention
is/are used. Those skilled in the art will recognize, or be able to
ascertain using no more than routine experimentation, many
equivalents to the specific embodiments of the invention described
herein. It is, therefore, to be understood that the foregoing
embodiments are presented by way of example only and that, within
the scope of the appended claims and equivalents thereto; the
invention may be practiced otherwise than as specifically described
and claimed. The present invention is directed to each individual
feature, system, article, material, and/or method described herein.
In addition, any combination of two or more such features, systems,
articles, materials, and/or methods, if such features, systems,
articles, materials, and/or methods are not mutually inconsistent,
is included within the scope of the present invention.
[0068] All definitions, as defined and used herein, should be
understood to control over dictionary definitions, definitions in
documents incorporated by reference, and/or ordinary meanings of
the defined terms.
[0069] The indefinite articles "a" and "an," as used herein in the
specification and in the claims, unless clearly indicated to the
contrary, should be understood to mean "at least one."
[0070] The phrase "and/or," as used herein in the specification and
in the claims, should be understood to mean "either or both" of the
elements so conjoined, i.e., elements that are conjunctively
present in some cases and disjunctively present in other cases.
Other elements may optionally be present other than the elements
specifically identified by the "and/or" clause, whether related or
unrelated to those elements specifically identified, unless clearly
indicated to the contrary.
[0071] "Opaque" refers to a material that transmits less than 50
percent of incident visible light.
[0072] "Fastener" refers to fasteners such as hook and loop
(VELCRO.RTM.), zipper, buttons, adhesive, snaps, slides, or other
mechanical fastener suitable for clothing use.
[0073] "Thermally reflective liner" refers to a layer of material
having a radiant energy reflectivity. The thermally reflective
liner may satisfy the NFPA 1971 2007 requirements. Some of these
materials may reflect (throw/cast back) more than 50%, more than
70% or more than 90% of incident radiant heat (infrared).
[0074] "Shell" used in reference to an article of clothing refers
to the "outer layer" of the article of clothing and the terms may
be used interchangeably herein. An outer shell of a coat may be
made of a material that is fire and abrasion resistant and may be
substantially non-reflective.
[0075] All references, patents and patent applications and
publications that are cited or referred to in this application are
incorporated in their entirety herein by reference.
* * * * *