The present invention is directed to a rescue harness assembly, more particularly, to a rescue harness assembly coupled to or integrated into a protective garment.
Firefighters and other individuals wearing protective garments are often required to enter hazardous locations when carrying out their duties. Accordingly, garments may include components which facilitate the extraction of a downed or incapacitated wearer. For example, a drag harness can be incorporated into a protective garment such that the harness can be utilized to drag the wearer to safety.
The speed with which the harness assembly can be accessed and deployed, and the speed with which the downed wearer can be moved to a safe location, are critical to successful extraction of the downed wearer. Accordingly, there is a need for a harness assembly which can be quickly and easily deployed, and which allows rapid extraction.
In one embodiment the invention is a harness assembly which can be quickly and easily deployed, and allows rapid extraction of the wearer. More particularly, in one embodiment the invention is a protective garment including an outer shell and a harness assembly configured to be generally positioned between the outer shell and a wearer of the garment when the garment is worn. The harness assembly includes a wrap-around portion and a shoulder portion configured to fit about the shoulders of a wearer. The wrap-around portion is movable between a retracted position wherein the wrap-around portion is generally positioned adjacent to a back of the garment and an extended position wherein the wrap-around portion is generally spaced away from the back and passable around or over the crotch of a wearer. The harness assembly includes an attachment portion configured to be attached, at a position on a front of the wearer, to the harness assembly, or to the outer shell, or to a component.
The attached figures illustrate a protective or hazardous duty garment in the form of a firefighter's coat, generally designated 10. The coat 10 may include a body portion 12 having a left front panel or portion 14, a right front panel or portion 16, and a back panel or portion 18. The panels/portions 14, 16, 18 may be made of separate pieces of material that are joined together, or can be made of a single piece of material, or various pieces of material joined in varying manners, etc. The left front panel 14 and right front panel 16 may each have an inner edge 20 that are releasably attachable together by a fastener (not shown), such as a zipper, snaps, clasps, clips, hook-and-loop fastening material (i.e., VELCRO® fastening material), combinations of these components or the like. The body portion 12 defines a torso portion/torso cavity 24 that is shaped to receive a wearer's torso 26 therein (see
As shown in
The outer shell 30 may be made of or include a variety of materials, including a flame, heat and abrasion resistant material such as a compact weave of aramid fibers and/or polybenzamidazole fibers. Commercially available aramid materials include NOMEX and KEVLAR fibers (both trademarks of E.I. DuPont de Nemours & Co., Inc. of Wilmington, Del.), and commercially available polybenzamidazole fibers include PBI fibers (a trademark of PBI Performance Fabrics of Charlotte, N.C.). Thus, the outer shell 30 may be an aramid material, a blend of aramid materials, a polybenzamidazole material, a blend of aramid and polybenzamidazole materials, or other appropriate materials. If desired, the outer shell 30 may be coated with a polymer, such as a durable, water repellent finish (i.e. a perfluorohydrocarbon finish, such as TEFLON® finish sold by E. I. Du Pont de Nemours and Company of Wilmington, Del.). The materials of the outer shell 30 may have a weight of, for example, between about five and about ten oz/yd2.
The moisture barrier 32 and thermal barrier 34 may be generally coextensive with the outer shell 30, or spaced slightly inwardly from the outer edges of the outer shell 30 (i.e., spaced slightly inwardly from the outer ends of the sleeves 28, the collar 40 (or the upper edge of the collar 40) and from the lower edge 36 of the coat 10) to provide moisture and thermal protection throughout the coat 10.
The thermal barrier 34 may be made of nearly any suitable material that provides sufficient thermal insulation. In one embodiment, the thermal barrier 34 may include a relatively thick (i.e. between about 1/16″- 3/16″) batting, felt or needled non-woven bulk or batting material 34a. The bulk material 34a can also take the form of one or two (or more) layers of E-89® spunlace fabric made of a combination of NOMEX® and KEVLAR® fabric. The bulk material 34a can also, or instead, include aramid fiber batting (such as NOMEX® batting), aramid needlepunch material, an aramid non-woven material, an aramid blend needlepunch material, an aramid blend batting material, an aramid blend non-woven material, foam (either open cell or closed cell), or other suitably thermally insulating materials. The bulk material 34a may trap air and possess sufficient loft to provide thermal resistance to the coat 10.
The bulk material 34a may be quilted to a thermal barrier face cloth 34b which can be a weave of a lightweight aramid material. Thus, either the bulk material 34a alone, or the bulk material 34a in combination with the thermal barrier face cloth 34b, may be considered to constitute the thermal barrier 34. In the illustrated embodiment, the thermal barrier bulk material 34a is positioned between the outer shell 30 and the thermal barrier face cloth 34b. However, the orientation of the thermal barrier 34 may be reversed such that the thermal barrier face cloth 34b is positioned between the outer shell 30 and the bulk material 34a. If desired, the thermal barrier 34, or parts thereof, may be treated with a water-resistant or water-repellent finish.
In one embodiment, the thermal barrier 34 has a thermal protection performance (“TPP”) of at least about twenty, and in another embodiment, at least about thirty five. Moreover, in one embodiment the coat 10 as a whole has a TPP of at least about twenty, and in another embodiment has a TPP of at least about thirty five.
The moisture barrier 32 may include a semi-permeable membrane layer 32a and a substrate 32b positioned on at least one side thereof The membrane layer 32a may be generally water vapor permeable but generally impermeable to liquid moisture. The membrane layer 32a may be made of or include expanded polytetrafluoroethylene (“PTFE”) such as GORE-TEX or CROSSTECH materials (both of which are trademarks of W.L. Gore & Associates, Inc. of Newark, Del.), polyurethane-based materials, neoprene-based materials, cross-linked polymers, polyamid, GORE® CHEMPAK® materials, sold by W.L. Gore & Associates, Inc. including GORE® CHEMPAK® Ultra Barrier Fabric, GORE® CHEMPAK® Selectively Permeable Fabric, or GORE® CHEMPAK® Sorptive Fabric, or other materials.
The membrane layer 32a may have microscopic openings that permit moisture vapor (such as water vapor) to pass therethrough, but block liquids (such as liquid water) from passing therethrough. The membrane layer 32a may be made of a microporous material that is either hydrophilic, hydrophobic, or somewhere in between. The membrane layer 32a may also be monolithic and may allow moisture vapor transmission therethrough by molecular diffusion. The membrane layer 32a may also be a combination of microporous and monolithic materials (known as a bicomponent moisture barrier), in which the microporous or monolithic materials are layered or intertwined.
The membrane layer 32a may be bonded or adhered to a substrate 32b of a flame and heat resistant material on either side thereof to provide structure and protection to the membrane layer 32a. The substrate 32b may be or include aramid fibers similar to the aramid fibers of the outer shell 30, but may be thinner and lighter in weight. The substrate 32b may be woven, non-woven, spunlace or other materials. In the illustrated embodiment, the membrane layer 32a is located between the outer shell 30 and the moisture barrier face cloth 32b. However, the orientation of the moisture barrier 32 may be reversed such that the moisture barrier face cloth 32b is located between the outer shell 30 and the membrane layer 32a.
In
The inner face cloth 38 may be the innermost layer of the coat 10, located inside the moisture barrier 32 and thermal barrier 34. The inner face cloth 38 can provide a comfortable surface for the wearer and protect the thermal barrier 34 and/or moisture barrier 32 from abrasion and wear. The inner face cloth 38 may be quilted to the adjacent layer (i.e. the thermal barrier 34 in the embodiment of
Each layer of the coat 10, and the coat 10 as a whole, may meet the National Fire Protection Association (“NFPA”) 1971 standards for protective firefighting garments (“Protective Clothing for Structural Firefighting”), which are entirely incorporated by reference herein. The NFPA standards specify various minimum requirements for heat and flame resistance and for tear strength. For example, in order to meet the NFPA standards, each of the outer shell 30, moisture barrier 32, thermal barrier 34 and inner face cloth 38 individually, and the coat 10 as a whole, must be able to resist igniting, burning, melting, dripping, separation and/or shrinking by more than 10% in any direction at a temperature of 500° F. for at least five minutes. Furthermore, in order to meet the NFPA standards, the combined layers of the coat 10 must provide a thermal protective performance rating of at least thirty five.
However, the coat 10 may include various arrangements of liners/materials, as desired, in which the various layers described herein are included, omitted, and/or rearranged. For example, the coat 10 may lack any thermal barrier 34, or lack any moisture/vapor barrier 32 or include only an outer shell 30 and lack other layers, etc., or may take on various other configurations as desired, and need not necessarily be NFPA compliant.
As shown in the various drawings, the coat/garment 10 may include, or be coupled to, a harness assembly 42. The harness assembly 42 is configured to be generally positioned between the outer shell 30 and a wearer of the coat 10. In particular, in one embodiment the thermal barrier 34, moisture barrier 32 and face cloth 38 are coupled together to form an inner liner component, and the harness assembly 42 is positioned between the outer shell 30 and the inner liner component (i.e., between the outer shell 30 and moisture barrier 32 in the illustrated embodiment). However, the harness assembly 42 can be positioned at various locations throughout the thickness of the coat 10, including being the inner-most component of the coat 10.
The harness assembly 42 may include an upper, or shoulder portion 44, and a lower, or wrap-around portion 46. The shoulder portion 44 may take the form of a single, continuous, unitary one-piece strap configured to pass about the shoulders of a wearer and receive the wearer's shoulders therein. More particularly, in the illustrated embodiment, the shoulder portion 44 is configured as a loop having a pair of opposed ends 48. Each end 48 defines a shoulder portion which may be configured as a partial loop to receive an arm/shoulder of a wearer therethrough. When donning the coat 10, the wearer may pass his or her arms over the inner portions of the shoulder portion 44 and under the outer portion of the shoulder portion 44 as shown by the arrows 50 of
As best shown in
As shown in
The illustrated harness 42 assembly further includes the wrap-around portion 46 which in the illustrated embodiment takes the form of a single, continuous, unitary one-piece strap of material. The upper end of the wrap-around portion 46 is coupled to or formed in a loop 60 which slidably receives part of the shoulder portion 44 therethrough to slidably couple the wrap-around portion 46 to the shoulder portion 44. Although at least part of the wrap-around portion 46 is configured to be wrapped around or over the crotch of the wearer and be positioned on the front of the wearer/coat 10, as will be described in greater detail below, it should be understood that the entire wrap-around portion 46 is not necessarily configured to be wrapped around or over the wearer. Passing the wrap-around portion 46 “around” the crotch may mean that the wrap-around portion 46 changes direction as it extends over the crotch, and passing the wrap-around portion 46 “over” the crotch may mean that at least part of the wrap-around portion 46 is positioned on top of the crotch of the wearer/trousers.
As shown in
When a wearer of the coat 10 is downed, incapacitated, or otherwise needs assistance, the harness assembly 42 can be utilized in the manner described below. Initially, the lower flap 70 is pivoted to expose the wrap-around portion 46 as shown in
At this time the harness assembly 42/wrap-around portion 46 is in its extended position, as shown in
When the harness assembly 42 is moved to its extended position, at least the lower portion of the shoulder portion 44 is pulled downwardly to accommodate the movement/extension of the harness assembly 42/wrap-around portion 46 (see
As shown in
After the wrap-around portion 46 has been moved to the extended position, the wrap-around portion 46 is passed around or about the crotch of the wearer such that the leading edge of the wrap-around portion 46 is positioned in the front side of the coat 10/wearer. The wrap-around portion 46 is then passed under the hip strap 86 of the SCBA system 80 as shown in
The wrap-around portion 46 is then folded about the hip strap 80 until two first portions of hook-and-loop fastening material 92 (
The various patches of hook-and-loop fastening material 92, 94, 96 at or adjacent to the distal end of the wrap-around portion 46 form, or are part of, an attachment portion 98 which enables the wrap-around portion 46 to be coupled to itself and/or the hip strap 86 and/or the front portion of the coat 10/outer shell 30. However, a wide variety of fastening devices besides hook-and-loop fastening material may be used as the attachment portion 98, such as hooks, latches, fasteners, buckles, straps, buttons, zippers, ties, snaps, clasps, frictional engagements, magnetic couplings, releasable adhesives, etc. Moreover, it should be understood that rather than being configured to directly attach the wrap-around portion 46 to itself, the attachment portion 98 may be configured to attach the wrap-around portion 46 to the front of the coat 10 or to the SCBA system 80, or to other components, straps or the like on the front of the wearer/coat 10.
In this manner, the harness assembly 42 can be quickly and easily deployed, and results in a drag system which provides at least two spaced natural gripping points (i.e., the shoulder straps 84 of the SCBA system 80) which can be securely grasped to quickly and effectively pull the wearer to safety, and does not require any straps or clasps of the SCBA system 80 to be undone (which otherwise might be necessary in order to drag the wearer by the SCBA system 80). Although the wearer can be dragged to safety by the portions of the harness assembly 42 extending through the upper opening 52 (i.e., without utilizing the wrap-around portion 46), the use of the wrap-around portion 46, particularly after wrapping around the crotch of the wearer, provides a more robust, secure and easily manipulable harness assembly 42. When the wrap-around portion 46 is in its secured position (i.e., secured to the hip strap 86, SCBA system 80 and/or front portion of the coat 10), the wrap-around portion 46 remains aligned with the spine/sagittal plane/central axis 76 of the coat 10, thereby providing a central harness portion which is securely retained in position by the legs of the wearer.
In the embodiment illustrated in
In this embodiment, the wrap-around portion 46′ includes a generally vertically oriented central strap 102 and a generally laterally extending connecting portion 104. More particularly, the central strap 102 terminates in a loop 60 at its upper/distal end that slidably receives the connecting portion 104 therethrough. The connecting portion 104 is connected at each end to an associated loop 48′ of the shoulder portion 44′. The connecting portion 104 can be connected to the shoulder portion 44′ by any of a variety of methods, such as stitching, rivets, or other permanent or releasably attachments. Thus in this configuration the wrap-around portion 46′ is coupled to the shoulder portion 44′ at two positions, and the wrap-around portion 46′ has a generally “Y-shaped” configuration when in its extended position, as shown in
Alternately, rather than having the central strap 102 slidingly receive the connecting portion 104, the central strap 102 may be fixedly and non-slidingly coupled to the connecting portion 104. Further alternately, the distal end of the central strap 102 may simply separate, or diverge, into two separate ends, wherein each end is coupled to one of the shoulder loops 48′ in the manner shown in
Many existing garments/coats may be able to be easily retrofitted to utilize the harness assembly 42 disclosed herein. In particular, some garments may already include the shoulder portions 44, 44′ disclosed herein (or can be modified to include such shoulder portions 44, 44′). In this case, the garments can be retrofitted by simply providing the wrap-around portion 46, 46′ and attaching the wrap-around portion 46, 46′ to the shoulder portion 44, 44′. If desired, the lower opening 66/lower flap 70 may also be provided during retrofitting. The garment can then be utilized in the manner described herein, providing the benefits noted above.
Although the invention is shown and described with respect to certain embodiments, it should be clear that modifications will occur to those skilled in the art upon reading and understanding the specification, and the present invention includes all such modifications. To the extent that the term “or” is employed in the claims (e.g., A or B), such usage is intended to mean “A or B or both”. When it is intended to indicate “only A or B but not both”, then the term “A or B but not both” will be utilized. Thus, use of the term “or” in the claims is the inclusive, and not the exclusive, use, unless specifically indicated otherwise.