The present disclosure relates generally to protective garments. More particularly, disclosed herein is a base ensemble operative to protect emergency responders from multiple threats of bodily harm while being sufficiently comfortable for daily wear and compatible with other Personal Protective Equipment.
Firefighters, emergency medical responders, and members of law enforcement each have specialized equipment and wearable gear designed to protect them from particular hazards. Firefighters, for example, have heavy structural turnout gear, such as turnout jackets, pants, or overalls, that operates as personal protective equipment (PPE). Such specialized gear is normally worn as an outer layer of protective clothing. Similarly, law enforcement personnel have protective equipment, such as body armor, that is typically worn over or under the officer's standard-issue uniform. Still further, emergency medical services personnel have protective masks, gloves, and other equipment worn in supplementation of their standard uniforms.
While the foregoing and other primary protective gear is certainly useful and necessary for its intended purpose, each of these first responders normally wear a base uniform to be supplemented by the protective gear. That primary protective gear is normally donned only when the person is entering a known threat or hazard with adequate warning. Often, such base uniforms provide little by way of specialized function and protection. Accordingly, without specialized, dedicated gear in supplementation of the first responder's standard-issue uniform, the first responder is without particularized protection against threats of bodily harm, and the first responder has only whatever protection his or her standard-issue uniform might happen to provide.
However, first responders are exposed to multiple potentially unexpected threats and hazards, even at times when specialized protective gear might not be worn and the first responder is wearing only his or her base uniform, such as in the event of unforeseeable emergencies. Existing base uniforms typically provide little, if any, protection against unexpected threats. Moreover, first responders experience numerous threats and hazards that even their personal protective equipment is not designed to handle.
Many uniforms that are made available to first responders have significant shortcomings and limitations when worn on a daily basis by the emergency personnel. For example, many uniforms are restrictive and limit the mobility of the wearer. These uniforms often lack features that facilitate the mobility and comfort of the wearer. They promote discomfort and possible damage to the garment when personnel undertake the strenuous movements common in their respective professions. Furthermore, the uniforms commonly fail to provide specialized features that emergency personnel may seek or require.
Still further, most protective equipment is focused on protecting against just a single threat, such as flame resistance or resistance to bloodborne pathogens. Moreover, disclosed protective equipment normally has the same level of protection throughout the entire garment or other type of equipment. Rather than providing targeted protection to areas of elevated vulnerability, homogenous characteristics exist throughout so that the equipment is further rendered uncomfortable and effectively incapable of being worn except when the first responder is confronting a known, expected hazard.
Meanwhile, the Standard on Emergency Services Work Clothing Elements set forth by the National Fire Protection Association as NFPA 1975 specifies the standard that safeguards emergency services personnel on the job. This standard specifies requirements for the design, performance, testing, and certification of non-primary station and work apparel uniforms and the individual garments comprising station and work apparel uniforms. Among the specifications is that requiring flame-resistant station uniform clothing that won't cause or exacerbate burn injury. The standard also specifies requirements for the thermal stability of textiles used in the construction of such uniforms and optional requirements for flame resistance, moisture management, odor resistance, water resistance, and visibility markings.
It is thus apparent to the present inventors that it would be highly advantageous to provide a protective ensemble for emergency responders that can be worn comfortably on a daily basis while providing enhanced functionality and providing protection to the wearer from multiple hazards and threat sources.
The present disclosure provides examples of multi-threat base ensembles for the protection of a wearer and the like.
An embodiment of the present disclosure includes a multi-threat base ensemble including a base ensemble shirt and base ensemble pants. The base ensemble shirt and the base ensemble pants can include materials that provide flame and/or chemical protection to a wearer. The multi-threat base ensemble can also include a targeted hazard protection system providing functional protection to the wearer at predetermined areas of the shirt and/or the pants. The targeted hazard protection system can be multi-layered, having upper and lower pads between a knit layer and a woven layer, where the upper and lower pads can include a liquid impervious membrane and protuberances disposed on the liquid impervious membrane. The multi-threat base ensemble can also include a cinching system that can selectively adjust a portion of the shirt or the pants between a cinched condition and a non-cinched condition, which can allow the targeted hazard protection system to be selectively drawn into proximity with a body of the wearer. The multi-threat base ensemble can also include areas of stretchable ventilation incorporated within the shirt and the pants to provide air ventilation to the wearer, along with additional selectively-actuated ventilation openings.
Other compositions, apparatus, methods, features, and advantages will be or become apparent to one with skill in the art upon examination of the following drawings and detailed description. It is intended that all such additional compositions, apparatus, methods, features and advantages be included within this description, be within the scope of the present disclosure, and be protected by the accompanying claims.
Further aspects of the present disclosure will be more readily appreciated upon review of the detailed description of its various embodiments, described below, when taken in conjunction with the accompanying drawings.
The drawings illustrate only example embodiments and are therefore not to be considered limiting of the scope described herein, as other equally effective embodiments are within the scope and spirit of this disclosure. The elements and features shown in the drawings are not necessarily drawn to scale, emphasis instead being placed upon clearly illustrating the principles of the embodiments. Additionally, certain dimensions may be exaggerated to help visually convey certain principles. In the drawings, similar reference numerals between figures designate like or corresponding, but not necessarily the same, elements.
Before the present disclosure is described in greater detail, it is to be understood that this disclosure is not limited to particular embodiments described, and as such may, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting, since the scope of the present disclosure will be limited only by the appended claims.
Where a range of values is provided, it is understood that each intervening value, to the tenth of the unit of the lower limit unless the context clearly dictates otherwise, between the upper and lower limit of that range and any other stated or intervening value in that stated range, is encompassed within the disclosure. The upper and lower limits of these smaller ranges may independently be included in the smaller ranges and are also encompassed within the disclosure, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both of those included limits are also included in the disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Although any methods and materials similar or equivalent to those described herein can also be used in the practice or testing of the present disclosure, the preferred methods and materials are now described.
As will be apparent to those of skill in the art upon reading this disclosure, each of the individual embodiments described and illustrated herein has discrete components and features which may be readily separated from or combined with the features of any of the other several embodiments without departing from the scope or spirit of the present disclosure. Any recited method can be carried out in the order of events recited or in any other order that is logically possible.
Embodiments of the present disclosure can employ, unless otherwise indicated, techniques of chemistry, material science, and the like, which are within the skill of the art.
The following examples are put forth so as to provide those of ordinary skill in the art with a complete disclosure and description of how to perform the methods and use the materials and garments disclosed and claimed herein. Efforts have been made to ensure accuracy with respect to numbers (e.g., amounts, temperature, etc.), but some errors and deviations should be accounted for. Unless indicated otherwise, parts are parts by weight, temperature is in ° C., and pressure is at or near atmospheric. Standard temperature and pressure are defined as 20° C. and 1 atmosphere.
Before the embodiments of the present disclosure are described in detail, it is to be understood that, unless otherwise indicated, the present disclosure is not limited to particular materials, manufacturing processes, or the like, as such can vary. It is also to be understood that the terminology used herein is for purposes of describing particular embodiments only, and is not intended to be limiting. It is also possible in the present disclosure that steps can be executed in different sequence where this is logically possible.
It is noted that, as used in the specification and the appended claims, the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.
As used herein, the following terms have the meanings ascribed to them unless specified otherwise. In this disclosure, “consisting essentially of” or “consists essentially” or the like, when applied to methods and compositions encompassed by the present disclosure refers to compositions like those disclosed herein, but which may contain additional structural groups, composition components or method steps (or analogs or derivatives thereof as discussed above). Such additional structural groups, composition components or method steps, etc., however, do not materially affect the basic and novel characteristic(s) of the compositions or methods, compared to those of the corresponding compositions or methods disclosed herein. “Consisting essentially of” or “consists essentially” or the like, when applied to methods and compositions encompassed by the present disclosure have the meaning ascribed in U.S. Patent law and the term is open-ended, allowing for the presence of more than that which is recited so long as basic or novel characteristics of that which is recited is not changed by the presence of more than that which is recited, but excludes prior art embodiments.
Provided herein is an advanced base ensemble that provides protection against multiple threat sources for the wearer, where the wearer can be personnel such as first responders.
Embodiments of the disclosure can provide an advanced base ensemble for first responders that is compatible with other primary Personal Protective Equipment.
Embodiments of the disclosure can provide an advanced multi-threat base ensemble for the wearer (e.g. a first responder) that provides functional protection from daily hazards while permitting comfortable wear as a daily base uniform.
Embodiments of the present disclosure can provide an advanced multi-threat base ensemble for first responders that exhibits enhanced durability.
Embodiments of the present disclosure can provide an advanced multi-threat base ensemble for first responders that is capable of being manufactured in compliance with the Standard on Emergency Services Work Clothing Elements of the National Fire Protection Association's NFPA 1975, including potentially with respect to flame resistance, water resistance, and odor resistance.
In certain practices of the present disclosure, other objects include providing an advanced multi-threat base ensemble that demonstrates flame resistance, water resistance, and, additionally or alternatively, odor-resistance.
Embodiments of the present disclosure can provide the wearer with a base ensemble that demonstrates added flame resistance, liquid repelling, and protection against, for instance, sharp objects at an emergency scene while remaining sufficiently comfortable and appealing for such as an emergency responder to wear while working a lengthy shift.
Embodiments or portions of embodiments of the present disclosure can provide an advanced multi-threat base ensemble that can be quickly and conveniently donned and doffed, including to permit rapid removal of the base ensemble in the event of contamination.
Particular manifestations of the present disclosure can provide an advanced multi-threat base ensemble with impact, flame, chemical and, additionally or alternatively, cut protection incorporated substantially throughout the base ensemble or within particular protective areas of the base ensemble.
Embodiments of the present disclosure can provide an advanced multi-threat base ensemble with incorporated ventilation, potentially selectively actuated ventilation, to minimize the thermal burden to the wearer.
Embodiments of the present disclosure can provide an advanced multi-threat base ensemble with incorporated moisture wicking materials, particularly in areas of expected high levels of perspiration, to aid in cooling, reduce thermal burden, and increase comfort to the wearer.
Embodiments of the present disclosure can provide an advanced multi-threat base ensemble that provides targeted protection, which may be characterized as functional protection, to contribute to enhanced comfort and wearability while providing enhanced threat resistance in hazardous areas.
One potential embodiment of the present disclosure for an advanced multi-threat base ensemble is indicated generally at 10 in
As discussed further below and as can be understood with additional reference to the drawings, the multi-threat base ensemble 10 for wearer 200 provides what may be referred to as functional protection from daily hazards while permitting comfortable wear as a daily base uniform. The multi-threat base ensemble 10 is designed and crafted to be capable of being manufactured to comply with the Standard on Emergency Services Work Clothing Elements of the National Fire Protection Association's NFPA 1975. By virtue of its construction characteristics, which can be understood with additional reference to the drawings and to the description below, the multi-threat base ensemble 10, particularly the shirt 12 of the base ensemble 10, can be quickly and conveniently donned and doffed, including to permit rapid removal of the base ensemble in the event of contamination, while providing effective protection against multiple threats. The multi-threat base ensemble 10 thus provides a more protective alternative to the standard duty or daily wear uniform. Particularly when employed in combination, the base ensemble 10 provides enhanced protection to the wearer 200 while permitting regular wear with improved thermal comfort, sensorial comfort, comfort in activity and fit, flexibility, and durability. By virtue of the enhanced comfort and increased mobility, fatigue during action is reduced.
With further reference to
The front placket 20 of the shirt 12 in this embodiment, though, is a faux button placket 20. While the placket 20 is adorned with buttons 22 thereby giving a traditional and formalized look, the buttons 22 are non-functional and do not operate to close the front 16 of the shirt 12 as with traditional buttons and button-holes. Instead, a zipper 30 traverses under the front placket 20 from an upper end contiguous with the collar 28 to a lower end contiguous with the front bottom hem 24 of the shirt 12 to divide the front portion 16 of the shirt 12 into selectively engagable and separable left and right halves. One or more closures, such as a plurality of hook and loop combinations 31 can cooperate to retain the front placket 20 in a substantially flat configuration. With the adjustability of the zipper 30, the wearer can selectively close the entire front portion 16 of the shirt 12, and the wearer can selectively unzip the zipper 30 to the extent desired for venting, such as during periods of non-emergency activity, thereby providing added thermal comfort through, for instance, increased evaporative potential. Further, the zipper 30 can be rapidly closed to join the left and right halves of the front portion 16 of the shirt 12 in the event of an emergency or other need.
The zipper 30 also permits the shirt 12 to be quickly donned and doffed significantly faster than unbuttoning. The ability to apply the shirt 12 rapidly can be very beneficial to the first responder where the ability to respond quickly is important. Furthermore, rapidly removing the shirt 12 can be important where the shirt 12 becomes contaminated, such as with bodily fluids, chemicals, or other contaminants.
Even further, a zipper 30 is advantageous in providing continuous sealing along its length while actual buttons inevitably leave gaps between the connections of the left and right portions of the shirt 12. With an existing buttoned shirt, a first responder either accepts the existence of such open gaps or wears an undershirt that may contribute to uncomfortable heating or a loss in flexibility or mobility. Still further, where a button is lost, further gapping can be created as is a loss in functionality and appearance. A zipper 30 as provided hereunder presents a continuous barrier with improved liquid resistance as compared to a buttoned garment.
As shown in
The multi-threat base ensemble shirt 12 can further include a chest pocket 38, such as in a left chest portion thereof, and a badge holder 98, such as in a right chest portion thereof. The chest pocket 38 can be a welt pocket that does not include a traditional flap. The welt chest pocket 38 gives a straight, streamlined appearance and function and eliminates the potentially disheveled appearance of an overturned flap, which might require pressing or other action to compel to a flat, neat condition. The chest pocket 38 can have a pocket bag that is large enough to keep writing materials and to retain and store other items that may be needed by a first responder. As shown in
The multi-threat base ensemble shirt 12 can incorporate further features that facilitate comfortable, daily wear of the shirt 12 while providing threat protection. For example, in some embodiments a shoulder yoke 35 spans from an anterior portion connected to the front portion 16 of the shirt 12 to a posterior portion connected to the rear portion 18 of the shirt 12. Thus, a continuous panel of fabric is presented at the tips of the shoulders of the shirt 12 by the shoulder yoke 35. With that, added comfort is provided by the elimination of a seam atop the shoulders. Such seams can be problematic and can uncomfortably pressed down into the wearer's shoulder, such as in instances where body armor or other gear is worn over the multi-threat base ensemble shirt 12.
The shoulder yoke 35 has a lower posterior edge that spans across the rear portion 18 of the shirt 12 from the left shoulder seam 108 to the right shoulder seam 110. A shoulder panel 36 spans from the left shoulder seam 108 to the right shoulder seam 110. An upper edge of the shoulder panel 36 is stitched or otherwise connected to the lower edge of the shoulder yoke 35. A lower edge of the shoulder panel 36 can be intermittently connected to a lower panel 37 of the rear portion 18, such as by tacking stitching 92 as can be best seen in
As can be perceived by reference, for example, to
By way of example and not limitation, the side panels 40 can be crafted from a mesh material to facilitate air flow. Alternatively, the side panels 40 can be formed from a moisture wicking knit for added moisture wicking. Still further, an individual material or layers of material can be employed to provide both functions.
The rear portion 18 of the multi-threat ensemble shirt 12 has articulated shoulder portions 108 and 110. On each side, a knit panel 112 is attached as a pleat that is secured to the shirt shoulder panel 36 and to the rear of the sleeve of the arm 15. This inset knit panel 112 allows flexibility and stretching across the back portion 18, such as when reaching. The flexibility contributes to added comfort in the shirt 12 and adds to the life and durability of the garment since tears from overextending will be minimized. Furthermore, the extra flexibility and stretch in this area allows the first responder to be more hands-on and to have more mobility not only in emergency situations but also in everyday wear. Such improved fit, added comfort, and increased mobility contribute to reduced fatigue even during strenuous activity.
With particular reference to
When the selectively-deployed strap 104 is disposed in a non-deployed position as in
Turning to
The multi-threat base ensemble pants 14 have a material with a high coefficient of friction, alternatively referred to as a highly tacky material, along some or substantially the entirety of the inner surface of the waistband 44. In a particular embodiment, the high coefficient-of-friction material comprises a band 46 of silicone twill tape stitched along the inner surface of the waistband 44. The high coefficient-of-friction material aids in keeping the pants 14 in position on the wearer's hips and in keeping the multi-threat ensemble base shirt 12 tucked in where desired. The high coefficient-of-friction material tends to assist in keeping the pants 14 and the shirt 12 or other garment in position and laying in the intended disposition. In this regard, it is recognized that keeping the shirt 12 tucked in not only adds to the appearance of the wearer but it also can provide vital protective capability by keeping skin from being exposed during action. In other embodiments, the high coefficient-of-friction material could be applied to the shirt 12 or both the shirt 12 and pants 14. Other materials having a high coefficient of friction could also be envisioned by one of ordinary skill in the art, such as those generally referred to as non-slip fabrics or grip fabrics. Examples can include such as base textile materials with coatings, beads or yarns integrated to the fabric. The beads or yarns can include e.g. PVC, thermoplastic rubber or other rubbers such as natural, butyl, Nitrile, neoprene, latex, and the like. The waistband 44 and the front of the waist portion of the pants 14 in general can be selectively closed by a zipper 100 in combination with snap buttons 102 or another closure mechanism. In other embodiments, as can be envisioned by one of ordinary skill in the art, other fastening means can be used to attach the shirt 12 and pants 14 (e.g. snaps, elastic, zippers, and/or velcro). Alternatively, the base ensemble could be a one piece such as a jumpsuit. In other embodiments, the base ensemble can comprise a separate shirt 12 that is long enough to remain tucked into pants 14 while the wearer performs bending activities.
The multi-threat base ensemble pants 14 can have a plurality of peripheral belt loops 48 spaced around the exterior of the waistband 44 and a rear belt loop 50 generally centered relative to the posterior of the waistband 44. The waistband 44 and the belt loops 48 and 50 are designed to be taller than those traditionally found on first responder uniforms. The added height of the loops 48 and 50 permit wider utility belts to be received. Furthermore, rather than being stitched externally to the top of the waistband 44, the belt loops 48 and 50 have end portions sewn into the seam allowance of the waistband 44, which allows extra space for topstitching that would otherwise limit the width that can clear this area. The rear belt loop 50 is of an extended length, effectively spanning approximately the distance over which two posterior belt loops are normally spaced. The longer rear belt loop 50 prevents excess pulling and deformation in the posterior waistband 44 that often deforms belts using belt loops and waistbands into a V-shape over time. With the extended length belt loop as disclosed herein, the belt can move and react with the pant in a more unitary fashion to prevent deformation and discomfort.
The multi-threat base ensemble pants 14 of the depicted embodiment have at least seven pockets. On the anterior portion of the pant, two front waist pockets 54 are disposed beginning at or adjacent to the waistband 44 evenly spaced on the anterior portion of the pants 14, and a coin pocket 56 is disposed to underlie one of the front waist pockets 54. A cargo pocket 58 is disposed on each thigh of the pants 14, and two rear pockets 60 are disposed adjacent to the waistband 44 evenly spaced on the posterior portion of the pants 14. The openings of the rear pockets 60 are disposed generally along a diagonal, which corresponds to the typical angle of insertion of a wearer's hand when reaching into a back pocket. This is intended to overcome the difficulties and limitations exhibited by horizontally straight pocket openings where the natural maneuverability of the body is not given proper account. The diagonal configuration of the pocket openings is more conducive to ease of use. In other embodiments, as can be envisioned by one of ordinary skill in the art, other appropriate numbers of pockets can be included, such as 4 or more, 5 or more, 6 or more, 7 or more, 8 or more, etc.
Looking to
In a similar manner, as in
The pants 14 retain a selectively-deployed reflective material. Again, it will be understood that the selectively-deployed reflective material could be retained and deployed under different constructions within the scope of the present disclosure. In this exemplary embodiment, the bags of the cargo pockets 58 have a reflective material 66, such as a strip of reflective material, affixed thereto. More particularly, reflective material 66 is disposed to span the upper edge of the cargo pocket 58. The flaps 62 and the reflective material 66 are sized so that the flaps 62 cover the reflective material when deployed and so that the reflective material 66 is exposed when the flaps are not deployed. Under this construction, the wearer can have minimized reflectivity when desired and can have enhanced reflectivity provided by the reflective material 66 when necessary, such as during nighttime emergencies along the roadside or elsewhere.
The multi-threat base ensemble pants 14 further incorporate areas of breathable, stretchable material, such as knit material, that contribute to the utility and comfort of the pants 14 and the mobility of the wearer. The material can additionally or alternatively be selected or treated for fire resistance, moisture wicking, and antimicrobial characteristics. As seen in
Selectively operable ventilation apertures in the form of selectively actuated openings are disposed in the anterior thigh portion of the pants 14. In an embodiment, the selectively-actuated openings are selectively opened and closed by zippers 78. The zippers 78 are disposed in a diagonal orientation across the thigh of the legs of the pants 14. The zippers 78 comprise concealed zippers, and the apertures created when the zippers 78 are selectively actuated to an open condition are backed with a more breathable material, such as a knit backing 96, as can be perceived in
The knee portions of the pants 14 incorporate an anterior targeted hazard protection system at the knee (also referred to as a knee pad system) and a posterior knee cinching system. The knee cinching system and the knee pad system alone and in combination further adapt the multi-threat base ensemble pants 14 to effective and comfortable use by the wearer while providing enhanced threat protection. As can be envisioned by one of ordinary skill in the art, in some embodiments, the targeted hazard protection system could be located at the elbow of the base ensemble shirt 12. In such an embodiment, the cinching system would be located anteriorly and the targeted hazard protection system located anteriorly.
The targeted hazard protection system, referred to as the knee pad system in this particular embodiment, comprises a layered system of multiple components that synergistically combine to provide a high-functioning knee pad. Looking additionally to
In some embodiments, a two-piece knee pad is fixed to the anterior knee panel 85. More particularly, the two-piece knee pad is formed by a contoured upper knee pad 82 and a contoured lower knee pad 84. The upper and lower knee pads 82 and 84 are marginally separated on the anterior knee panel 85 to permit flexibility and articulation. The contoured upper knee pad 82 can have an upper arcuate border and a lower border with a protuberating central valley. The contoured lower knee pad can have a negative upper valley, left and right wing portions, and a bulbous bottom portion. The upper knee pad 82 protects the kneecap, and the lower knee pad 84 protects the shin, such as when the first responder kneels.
In each knee pad 82 and 84, a liquid impervious membrane can be laminated between the outer layer of woven material and the layer of knit material. With that, the upper and lower knee pads 82 and 84 are themselves formed by plural layers of material with the liquid impervious membrane captured between the woven and knit layers. The liquid impervious membrane creates a liquid barrier while the inner layer of knit material provides comfort and flexibility and the outer layer of woven material adds durability.
The knee pads 82 and 84 are of similar construction to one another. In certain embodiments, each has a layer forming the liquid impervious membrane. The layer could include or be formed from a polymeric material. The potential construction of liquid impervious membranes according to the present disclosure can be better understood with additional reference to
As shown in relation to the lower membrane 118 in
As shown in relation to the lower membrane 118 in
In embodiments, the protuberances 126 can be crescent shaped, frusto-conical shaped, or a combination thereof. The height of protuberances 126 can be from about 0.02 to 5 mm, or about 0.05 to 3 mm, and the diameter or widest portion can be from about 0.01 mm to 1 mm, or about 0.3 to 1 mm.
In embodiments, the rubberized layers of the upper and lower membranes 116 and 118 are formed from a cut-resistant material with the arrays of protuberances 126 as shown and described to perform the dual functions of abrasion resistance and shock absorption. Proprietary methods of microembossing patterns are employed in the technical design of the material. Specialized polymer formulations are utilized to provide specific characteristics e.g. flame resistance, grip, and coloration.
The knee pads 82 and 84 can further include a layer of shell material 87 that is printed with a capsule-shaped print as shown, for instance, in
The anterior knee pad system in certain embodiments provides at least an average rating force of 1000 gf higher than the base pant fabric (ASTM F1790-97 and ANSI/ISEA 105-2011). Also in certain embodiments, the anterior knee pad system attenuates at least 50% of the force with 544 gram weight at 0.5 m height above that of the base pant material with a thickness no higher than 4.0 mm.
The two-pieced, multi-layer knee pad so formed by the upper and lower knee pads 82 and 84 can be stitched and cover stitched onto the anterior knee panel 85. The materials for the knee pad system formed by the upper and lower knee pads 82 and 84 is fire resistant with no melt characteristics. The knee pad system is also designed to avoid presenting a stored energy threat, meaning that it is designed not to hold heat. Accordingly, where the wearer is exposed to a thermal threat and then compresses the knee, such as by kneeling, no injury will be caused from heat transfer. For instance, the stored energy protection for the composite is designed so that burning of the wearer is minimized or eliminated even after sixty seconds using the stored energy test procedures as a composite. By the incorporation of an abrasion resistant coating, patch, or layer, the overall life of the knee pads 82 and 84 is improved by protecting the pad itself from direct contact with hazardous elements. The disclosed pad structure could alternatively be constructed for use as an elbow pad structure.
The posterior knee cinching system permits the knee portions of the multi-threat base ensemble pants 14 to be selectively cinched about the knees of the first responder and to be selectively loosened about the knees of the first responder. Looking, for example, to
Under this construction and as is shown in
The fabric materials for the multi-threat base ensemble 10 can include fire resistant knit and fire-resistant woven materials. By way of example and not limitation, flame resistant base layering as sold under the registered trademark MASSIF® knit can be employed, and materials sold under the registered trademark TENCATE® can be used for woven materials. Fabric components of the shirt 12 can, for instance, be woven, fire resistant fabric as sold under the trademark TECASAFE® 580A, which is a 5.8 oz material. Fabric components of the pants 14 can, for instance, be of similar material but of a heavier weight, such as the fire-resistant woven fabric sold under the trademark TECASAFE® 700A, which is a 7 oz material.
The threat protection of the base ensemble 10 is, in particular embodiments, further improved by wet padding the fabrics, including the laminate portions of the woven materials, with antimicrobial treatment and water and oil repellents, such as durable omniphobic repellent. The finish treatments can be padded on together. The antimicrobial treatment could, for instance, be that sold under the trademark ULTRAFRESH™ while the durable omniphobic repellent could be that sold by Ultra Tech Brands under the trademark EVERSHIELD™. Such a combination of finishes creates an improved threat barrier as it possesses the capability to repel liquids, including certain oils (rated at 6 per AATCC 118 method, Oil Repellency-Hydrocarbon Resistance Test), rain, and bodily fluids. This not only keeps the wearer dry and comfortable in inclement weather but also repels blood, urine, and vomit as is highly desirable from a number of viewpoints, including health and safety. In the event the multi-threat base ensemble 10 becomes soiled, the antimicrobial finish provides further benefits to the wearer to assist in lowering exposure to undesired liquids. Additional benefits of the antimicrobial treatment include odor reduction, such as from sweat produced by a wearer, thereby reducing the need for frequent laundering and potentially increasing the longevity of the multi-threat base ensemble 10. Embodiments of the multi-threat base ensemble 10 can incorporate a cut material, such as fiberglass engineered fabric, that provides a composite protection of ANSI/ISE 105-2011 (sec 5.1.1) Cut Level 4 (minimum of 1,500 grams in ASTM F 1790 test method). As taught herein, the multi-threat base ensemble 10 selectively incorporates a membrane technology to provide either impermeable or permeable barrier protection to bloodborne pathogens and, additionally or alternatively, chemical hazards.
The multi-threat base ensemble 10 can be manufactured to meet Underwriters Laboratories NFPA 1975 standard, which is the 2014 Edition Standard on Emergency Services Work Clothing Elements. The Standard's scope is to specify requirements for the design, performance, testing, and certification of non-primary protective work apparel and the individual garments comprising work apparel. The NFPA standard also specifies requirements for the thermal stability of textiles used in the construction of work apparel. Testing encompasses design requirements and performance requirements. The base ensemble 10 can be manufactured to be free of rough spots and sharp edges, and contact of metal with the wearer's body can be avoided. The base ensemble 10 can provide thermal stability, seam strength, and product label printing durability. Compliance with the NFPA 1975 standard provides emergency services personnel with work apparel that will not contribute to burn injury severity while providing even further threat protection. By complying with the standard, assurance can be had that, among other things, the textiles employed are thermally stable and will not rapidly deteriorate, melt, shrink, or adhere to the wearer's skin, causing greater, more severe burn injuries. Meanwhile, the base ensemble 10 is compatible with other primary Personal Protective Equipment. The base ensemble 10 is modular and can be worn under and with an array of Personal Protective Equipment from all communities. Particularly advantageous to emergency medical technicians, the base ensemble can provide splash resistance, such as to biological contaminants, and the impact resistant knee pad system increases protection in medical emergency situations where a person in need is tended to by the responder.
Fundamentally for all types of personnel, including correctional guards, private security forces, and first responders, such as firefighters, emergency medical personnel, and law enforcement, the base ensemble 10 can act as a comfortable, daily wear base uniform system designed to provide functional protection from multiple daily hazards. As used herein, “functional protection” is defined as placing protection technologies in areas on the base ensemble 10 with the highest or higher than normal likelihood of hazard contact while permitting other areas of the base ensemble 10 to enjoy flexibility and low material burdens to minimize the overall impact on overall garment comfort. Protection aspects of the base ensemble 10, including impact resistance, cut resistance, fire resistance, antimicrobial properties, and durable omniphobic repellence, are strategically placed within the shirt 12 and pants 14 so that comfort and functionality was optimized while the base level of protection was enhanced. By way of example and not limitation, the placement of membrane material in the knee area where the likelihood is high that a user will need higher protection from liquid penetration through compression, such as by kneeling on blood contamination, while not providing such membrane material in other locations permits the base ensemble 10 to be wearable with a balance between adequate protection and avoiding significant impacts on thermal comfort and flexibility. The concept of functional protection is likewise carried forth in relation to the cut protection provided by the knee pad materials and knee pads that are light in weight while providing for impact protection.
Now having described the embodiments of the disclosure, in general, the examples describe some additional embodiments. While embodiments of the present disclosure are described in connection with the example and the corresponding text and figures, there is no intent to limit embodiments of the disclosure to these descriptions. On the contrary, the intent is to cover all alternatives, modifications, and equivalents included within the spirit and scope of embodiments of the present disclosure.
A modified system engineering approach was used during development of the base ensemble described herein. This approach included rigorous needs analysis and specification development to ensure traceability of user needs throughout. Data-driven multi-criteria decision-making methods were used during material and design selection to optimize ensemble performance. Fabric and ensemble level testing occurred in research and testing facilities that enabled systematic testing and evaluation of the developed prototype. Performance assessments included Heat Storage, Heat and Thermal Shrinkage, Thermal Stability and Vertical Flame tests for fire and heat protection, repellency and splash protective tests as well as fabric and system-level evaluation of thermal comfort. Human subject ergonomic and subjective comfort evaluations were also performed, which informed further development and optimization.
The base ensemble described herein integrates state-of-the-art protective technologies including flame resistance, blood-borne pathogen splash protection, water repellency, optimal daily-wear comfort, integrated kneepads, localized cut and impact protection and deployable reflectivity among other features. The base ensemble is certified to the requirements of the National Fire Protection Association's (NFPA) 1975 Standard on Emergency Services Work Clothing Elements (2014 edition). One hundred fifty (150) certified prototypes were delivered to the Department of Homeland Security for extended operational wear testing.
Over 50 materials were sourced and tested for the base ensemble. In a preferred embodiment, a combination of commercially available materials were selected (Table 1). Additional treatments were applied to the materials before assembly of the base ensemble to provide the materials with desired characteristics (Table 2) at specific areas of the base ensemble. For example, antimicrobial treatment, durable omniphobic repellants, and combinations thereof were applied to the fabrics, depending on the fabric's location on the base ensemble.
The Type 1 materials selected were generally Flame Resistant (FR), available in a Navy color, and within the 5-8.0 oz/yd2 weight range. Type 1 materials, having flame retardant properties, were additionally treated with an antimicrobial and a durable omniphobic repellant. These materials can be used to form the main portions of the shirt 12 and pants 14, including but not limited to the front portion 16, arms 15, rear portion 18, front placket 20, shoulder yoke 35, chest pocket 38, waist pocket 54, coin pocket 56, cargo pocket 58, rear pocket 60, etc.
Similarly, the Type 2 materials were generally Flame Resistant, highly air permeable, moisture wicking, available in a Navy color, and within the 5-7.0 oz/yd2 weight range. Type 2 material possesses moisture wicking and flame-retardant properties and were used in areas where stretch and ventilation are desirable (including but not limited to the shoulder panel 36, side panel 40, selectively actuated openings 79, yoke 72, panel 74, and crotch gusset 76).
Type 3 materials were formed from a tri-laminate fabric designed specifically for the base ensemble using a combination of woven, knit and membrane technologies shown in Table 1 because no commercially available laminate materials were found that were thin and comfortable and yet still provided some chemical protection. The Type 3 materials are composites including Type 1 and Type 2 materials treated with a durable omniphobic repellant. The material treatments and combinations of materials were selected to impart desired characteristics without sacrificing the individual advantages of the individual materials. Therefore, the materials (membrane/laminate) were combined based on their ability to pass the liquid, water and viral penetration tests from NFPA 1971, their ability to be flexible as a laminate, their Moisture Vapor Transmission Rate (MVTR), and their oil resistance. Type 3 materials were used for the multi-layer anterior knee panel 85.
In various embodiments, the durable omniphobic repellant can have a viscosity of about 4-5 cP and a pH of approximately 6.5 (diluted measurements). In various embodiments, the durable omniphobic repellant can include a polymer (about 5-10% by volume), Dihydroxylpropyl PEG-5 Linoleammonium Chloride (about 1-5%), [(Methylethylene)bis(oxy)]dipropanol (about 1-5%) and silicone dioxide (1-5%) in an aqueous solution. In various embodiments, the durable omniphobic repellant can be EverShield™.
In various embodiments, the antimicrobial treatment can include Bis(1-hyroxy-2(1H)-pyridinethionato-O,S)-(T-4) zinc (about 30-50% by volume), Sodium polynaphthalene sulfonate (about 1-10% by volume), and water.
The treatments for the materials were applied using wet processing and/or pad dipping and/or pad dry cure. In an embodiment, the fabric reached 160 C for 30-60 seconds to cure after pad dipping.
It should be noted that ratios, concentrations, amounts, and other numerical data may be expressed herein in a range format. It is to be understood that such a range format is used for convenience and brevity, and thus, should be interpreted in a flexible manner to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. To illustrate, a concentration range of “about 0.1% to about 5%” should be interpreted to include not only the explicitly recited concentration of about 0.1 wt % to about 5 wt %, but also include individual concentrations (e.g., 1%, 2%, 3%, and 4%) and the sub-ranges (e.g., 0.5%, 1.1%, 2.2%, 3.3%, and 4.4%) within the indicated range. In an embodiment, “about 0” can refer to 0, 0.001, 0.01, or 0.1. In an embodiment, the term “about” can include traditional rounding according to significant figures of the numerical value. In addition, the phrase “about ‘x’ to ‘y’” includes “about ‘x’ to about ‘y’”.
It should be emphasized that the above-described embodiments of the present disclosure are merely possible examples of implementations, and are set forth only for a clear understanding of the principles of the disclosure. Many variations and modifications may be made to the above-described embodiments of the disclosure without departing substantially from the spirit and principles of the disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure.
This application claims the benefit of and priority to U.S. Provisional Application Ser. No. 62/814,112, having the title “Advanced Multi-Threat Base Ensemble for Emergency Responders”, filed on Mar. 5, 2020, the disclosure of which is incorporated herein by reference in its entirety.
This invention was made with government support under grant number 2014-ST-108-FRG003 awarded by the U.S. Department of Homeland Security (DHS). The government has certain rights in the invention.
Number | Date | Country | |
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62814112 | Mar 2019 | US |