Protective Clothing and Protective Shroud/Hood with Fan

Abstract

An arc rated article of outerwear which protects the wearer from electrical arc flash. The article of outerwear has one or more layers made from woven fabric, knit fabric or a combination thereof. The fabric has a 40 cal/cm2 or greater arc rating. The arc rated article of outerwear is made solely from the one or more layers made from woven fabric, knit fabric or a combination thereof, the fabric having a 40 cal/cm2 or greater arc rating, with no other layers of a different fabric.

Claims

1. An arc rated article of outerwear which protects the wearer from electrical arc flash, the article of outerwear comprising: one or more layers made from woven fabric, knit fabric or a combination thereof, the fabric having a 40 cal/cm.sup.2 or greater arc rating; the arc rated fabric allows the article of outerwear to stretch to enhance the comfort of the wearer of the article of outerwear.

2. The arc rated article of outerwear as recited in claim 1, wherein the arc rated article of outerwear meets ASTM F1959/F1959M-12 entitled Standard Test Method for Determining the Arc Rating of Materials for Clothing.

3. The arc rated article of outerwear as recited in claim 1, wherein the arc rated article of outerwear meets ASTM F1506-10a entitled Standard Performance Specification for Flame Resistant and Arc Rated Textile Materials for Wearing Apparel for Use by Electrical Workers Exposed to Momentary Electric Arc and Related Thermal Hazards.

4. The arc rated article of outerwear as recited in claim 1, wherein the arc rated article of outerwear meets ASTM F2178-17b entitled Standard Test Method for Determining the Arc Rating and Standard Specification for Eye or Face Protective Products.

5. The arc rated article of outerwear as recited in claim 1, wherein the arc rated article of outerwear is a coat or jacket.

6. The article of outerwear as recited in claim 1, wherein the arc rated article of outerwear is a bib.

7. The arc rated article of outerwear as recited in claim 1, wherein portions of the arc rated article of outerwear are made from fabric comprising NorFab, Para-Aramid, Modacrylic, Ultra Soft, Tecasafe, Nomex, Protera, Treated Cotton, Kynol, Basofil, Meta-Aramid, Tencel, Spandex or combinations thereof.

8. The arc rated article of outerwear as recited in claim 1, wherein the arc rated article of outerwear is made solely from the one or more layers made from woven fabric, knit fabric or a combination thereof, the fabric having a 40 cal/cm.sup.2 or greater arc rating, with no other layers of a different fabric.

9. The arc rated article of outerwear as recited in claim 1, wherein the arc rated article of outerwear has two layers made from the same fabric, with each layer having a 40 cal/cm.sup.2 or greater arc rating.

10. The arc rated article of outerwear as recited in claim 9, wherein weft fibers in the fabric in the two layers are oriented in different directions to increase the arc flash and flash fire resistant characteristics of the arc rated article of outerwear.

11. The arc rated article of outerwear as recited in claim 10, wherein the weft fibers in one layer of the two layers is oriented perpendicular to the weft fibers in a second layer of the two layers.

12. An arc rated article of outerwear which protects the wearer from electrical arc flash, the article of outerwear comprising: one or more layers made from woven fabric, knit fabric or a combination thereof, the fabric having a 40 cal/cm.sup.2 or greater arc rating; the arc rated article of outerwear is made solely from the one or more layers made from woven fabric, knit fabric or a combination thereof, the fabric having a 40 cal/cm.sup.2 or greater arc rating, with no other layers of a different fabric.

13. The arc rated article of outerwear as recited in claim 12, wherein the arc rated article of outerwear meets ASTM F1959/F1959M-12 entitled Standard Test Method for Determining the Arc Rating of Materials for Clothing.

14. The arc rated article of outerwear as recited in claim 12, wherein the arc rated article of outerwear meets ASTM F1506-10a entitled Standard Performance Specification for Flame Resistant and Arc Rated Textile Materials for Wearing Apparel for Use by Electrical Workers Exposed to Momentary Electric Arc and Related Thermal Hazards.

15. The arc rated article of outerwear as recited in claim 12, wherein the arc rated article of outerwear meets ASTM F2178-17b entitled Standard Test Method for Determining the Arc Rating and Standard Specification for Eye or Face Protective Products.

16. The arc rated article of outerwear as recited in claim 12, wherein the arc rated article of outerwear is a coat or jacket.

17. The article of outerwear as recited in claim 12, wherein the arc rated article of outerwear is a bib.

18. The arc rated article of outerwear as recited in claim 12, wherein portions of the arc rated article of outerwear are made from fabric comprising NorFab, Para-Aramid, Modacrylic, Ultra Soft, Tecasafe, Nomex, Protera, Treated Cotton, Kynol, Basofil, Meta-Aramid, Tencel, Spandex or combinations thereof.

19. The arc rated article of outerwear as recited in claim 1, wherein the arc rated article of outerwear has two layers made from the same fabric, with each layer having a 40 cal/cm.sup.2 or greater arc rating.

20. The arc rated article of outerwear as recited in claim 9, wherein weft fibers in the fabric in the two layers are oriented in different directions to increase the arc flash and flash fire resistant characteristics of the arc rated article of outerwear.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is a perspective view of an illustrative protective article of clothing of the present invention, the illustrative article of protective clothing is a bib.

[0015] FIG. 2 is a perspective view of another illustrative protective article of clothing of the present invention, the illustrative article of protective clothing is a jacket.

[0016] FIG. 3 is a back perspective view of a user wearing the bib of FIG. 1, the jacket of FIG. 2 and an illustrative protective shroud/hood of the present invention.

[0017] FIG. 4 is a back perspective view of the protective shroud/hood of FIG. 3 with a movable protective cover displaced to the side.

[0018] FIG. 5 is an enlarged perspective view of fans attached to the protective shroud/hood.

[0019] FIG. 6 is a front view of a back inside surface of the protective shroud/hood of FIG. 3.

[0020] FIG. 7 is a diagrammatic view of the air flow through the fans and around a wearers head when the when the shroud/hood is properly positioned on the wearer.

DETAILED DESCRIPTION OF THE INVENTION

[0021] The description of illustrative embodiments according to principles of the present invention is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description of embodiments of the invention disclosed herein, any reference to direction or orientation is merely intended for convenience of description and is not intended in any way to limit the scope of the present invention. Relative terms such as lower, upper, horizontal, vertical, above, below, up, down, top and bottom as well as derivative thereof (e.g., horizontally, downwardly, upwardly, etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the apparatus be constructed or operated in a particular orientation unless explicitly indicated as such. Terms such as attached, affixed, connected, coupled, interconnected, and similar refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

[0022] Moreover, the features and benefits of the invention are illustrated by reference to the preferred embodiments. Accordingly, the invention expressly should not be limited to such embodiments illustrating some possible non-limiting combination of features that may exist alone or in other combinations of features, the scope of the invention being defined by the claims appended hereto. The present system includes a protective shroud/hood having at least front and rear portions for surrounding the corresponding areas of a wearer's head. The protective shroud/hood defines a vent opening in the rear portion of the shroud/hood. A transparent viewing window is typically mounted to the front portion of the shroud/hood.

[0023] FIGS. 1 and 2 illustrate an arc flash and flash fire resistant coat or jacket 10 and arc flash and flash fire resistant bib 12 which are made according to subject invention and from the material or fabric described below. However, other garments or articles of outwear may be made with the material or fabric. In accordance with an aspect of the invention, the garments are made from any material which has been tested and approved for arc flash, such as, but not limited to, fabrics which include NORFAB, para-aramid, modacrylic, ULTRA SOFT, TECASAFE, NOMEX, PROTERA, treated cotton, KYNOL, BASOFIL, meta-aramid, TENCEL, and/or SPANDEX.

[0024] The garment or outerwear which resists ignition and insulates against heat. The garment or outerwear may be made from woven material or fabric, knit material or fabric or from a combination thereof. The garment may have one or more layers of material or fabric which are arc flash and flash fire resistant. The material or fabric has the ability to stretch to enhance the comfort of the wearer of the garment or article of outerwear. In general, a knit fabric in made from a single yarn looped continuously to produce a braided look, while a woven fabric is made from multiple yarns crossing each other at right angles to form the grain.

[0025] In garments with multiple layers, the warp layers of the different material or fabric of the layers may be oriented in different directions, such as the warp fibers may be perpendicular to each other to increase the arc flash and flash fire resistant characteristics of the garment.

[0026] The present invention provides a garment that is flexible and is arc flash and flash fire resistant with a 40 cal/cm.sup.2 or greater arc rating which meets: ASTM F1959/F1959M-12: Standard Test Method for Determining the Arc Rating of Materials for Clothing; ASTM F1506-10a: Standard Performance Specification for Flame Resistant and Arc Rated Textile Materials for Wearing Apparel for Use by Electrical Workers Exposed to Momentary Electric Arc and Related Thermal Hazards; and ASTM F2178-17b: Standard Test Method for Determining the Arc Rating and Standard Specification for Eye or Face Protective Products. A face shield is provided which meets: ANSI Z87.1: American National Standard for Occupational and Educational Personal Eye and Face Protection Devices. A hard hat is provided which meets: ANSI Z89.1: American National Standard for Industrial Head Protection.

[0027] As shown in FIGS. 3 through 7, an illustrative protective system 100 includes a shroud/hood 102, a helmet or hard hat 104, a transparent viewing window 106, and one or more fan assemblies 108. As best shown in FIG. 7, the shroud/hood 102 has a front surface 112, a rear surface 114 and side surfaces 116 (FIG. 3). An interior cavity 118 extends between the front surface 112, the rear surface 114, and the side surfaces 116. The interior cavity 118 is dimensioned to fit a person's head. While a shroud 102 is shown, the shroud may be replaced with a hood which has a top surface.

[0028] The front surface 112 includes a shield opening 122 for receiving the transparent face shield or viewing window 106 or for having a transparent viewing window 106 positioned thereover. The shroud/hood 102 is constructed of material which resists ignition and helps insulate against heat, such as, but not limited to synthetic fiber for use in protective ballistic clothing or protective fire clothing sandwiched between layers of other synthetic fiber for use in protective clothing or protective fire clothing. In the illustrative embodiment shown, the shroud/hood 102 is a multi-layered, lightweight, and flexible material. Various materials may be used to form shroud/hood 102, such as, woven fabric, non-woven fabric, or a variety of natural or synthetic fibers. For example, the shroud/hood 102 may be made from woven material or fabric, knit material or fabric or from a combination thereof. The shroud/hood 102 may have one or more layers of material or fabric which are arc flash and flash fire resistant. The material or fabric has the ability to stretch to enhance the comfort of the wearer of the garment or article of outerwear

[0029] A mounting strip of material 126, as shown in FIGS. 4 and 5, is provided in the rear surface 114 of the shroud/hood 102. The mounting strip 126 has a generally rectangular shape and may be of made of the same material as the remainder of the shroud/hood 102 or may be made of a different material which has stiffer and stronger characteristics to allow mounting of devices thereto. Such material includes, but is not limited to, leather or material with a stiffening insert that is flame resistant. The shroud/hood 102 includes a rear flap 128 (FIG. 3) which is positioned in line with the mounting strip 126. In the illustrative embodiment, the rear flap 128 has a generally rectangular shape. The shape of the mounting strip and the rear flap 128 may vary. The rear flap 128 is flexible to allow the rear flap 128 to be moved as required.

[0030] One or more vent openings 130, FIG. 7, are provided in the mounting strip 126. The vent openings 130 extend into the interior cavity 118. The vent openings 130 have a rectangular configuration and are dimensioned to allow air to enter the interior cavity 118, as will be more fully described. Other shapes of the vent openings 130 may be used. The vent openings 130 are positioned to extend into the interior cavity 118 at a location proximate the neck of the wearer of the shroud/hood 102. The proper positioning of the vent openings 130 facilitates the proper flow of air in the interior cavity 118 to provide proper ventilation to the wearer to keep the wearer cool. In addition, the proper flow of air in the interior cavity 118 also prevents the transparent viewing window 106 from fogging, thereby enhancing the effectiveness and safety of the shroud/hood 102.

[0031] The shroud/hood 102 may be worn over the hard hat 104 or under the hard hat 104. The transparent viewing window 106 may be integrally attached to the shroud/hood 102 or may be part of the hard hat 104. The transparent viewing window 106 may have an arched or curved cross-sectional shape or other known shapes.

[0032] The shroud/hood 102, hard hat 104 and transparent viewing window 106 are all constructed of material which resists ignition and helps to insulate against heat. For example, shroud/hood 102, hard hat 104 and transparent viewing window 106 all have a 40 cal/cm.sup.2 arc rating.

[0033] Each of the one or more fan assemblies 108 has an outside mounting plate 132, a fan 134, a housing 136 and a power source (not shown). In the embodiment shown, the outside mounting plate 132 has a rectangular shape, however, other shapes of the outside mounting plate 132 may be used. The outside mounting plate 132 is preferably mountable on shroud/hood 102 to cover the one or more vent openings 130 are provided in the mounting strip 126. The outside mounting plate 132 is attached to shroud/hood 102 by adhesive or mounting hardware 140 which extends through the mounting strip 126 of the shroud/hood 102 and through a mounting plate 142 positioned in the interior cavity 118 of the shroud/hood 102. The mounting hardware 140 may be, but is not limited to, rivets or nuts and bolts. The mounting plate 142 having vent openings 144 which align with vent openings 130.

[0034] The housing 136 is mounted to and extends from the outside mounting plate 132. Screws, bolts or other known fasteners (not shown) can be used to mount the housing 136 to the outside mounting plate 132. The housing 136 has an air release, exhaust or vent opening 146 for allowing air circulated by the fan 134 to be moved through the vent opening 146. When assembled the vent openings 146 of the housing 136 is align with vent openings 130 and vent openings 144. The housing 136 has air receiving passages or air intake openings 148 positioned on the sides of the housing 136 proximate the fan 134 to allow the fan to draw in air from the sides of the fan 134 as the fan 134 is operated. In the illustrative embodiment, the air intake openings 148 open in planes which are perpendicular to planes in which the vent openings 146 open, however, other configurations may be used.

[0035] The shroud/hood 102 or the outside mounting plate 132 may include a cavity or pocket (not shown) for receiving and storing the power source (not shown) attached to a fastening strip 138. The power source may be any type of portable power source which provide sufficient power and which is safe to operate, such as, but not limited to, a battery pack.

[0036] In operation, the fan 134 force or directs air from the outside of the shroud/hood 102 to the interior cavity 118 of the shroud/hood 102 to provide proper ventilation to the wearer of the shroud/hood 102. The air passes through the vent openings 146 of the housing 136, the vent openings 130 and the vent openings 144 into the interior cavity 118 of the shroud/hood 102.

[0037] A switch (not shown) may be provided to turn on and off the power source to engage and disengage the fan 134. The switch may be provided on the power source or at other locations to facilitate the ability of the wearer to turn the fan 134 on and off. The switch can be any type of switches which are known in the industry.

[0038] As shown in FIG. 7, when in use, the fan 134 directs the airflow of the outside air into the interior cavity 118 of the shroud/hood 102 proximate a neck 160 of the wearer 162. As the neck 160 is removed or spaced from the vent openings 144 into the interior cavity 118 of the shroud/hood 102, the airflow from the vent openings 144 is not restricted. This allows the air flow to flow in the interior cavity 118 of the shroud/hood 102 around the wearer 162 as represented by the arrows 166. In addition, as two vent openings 144 extend into the interior cavity 118 of the shroud/hood 102, the vent openings 144 are positioned offset from the center axis of the neck 160 of the user 162. This allow the airflow from the vent openings 144 to flow to either side of the user 162, thereby providing sufficient and even flow of the air throughout the entire volume of the interior cavity 118 of the shroud/hood 102.

[0039] While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention as defined in the accompanying claims. One skilled in the art will appreciate that the invention may be used with many modifications of structure, arrangement, proportions, sizes, materials and components and otherwise used in the practice of the invention, which are particularly adapted to specific environments and operative requirements without departing from the principles of the present invention. The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being defined by the appended claims, and not limited to the foregoing description or embodiments.