US20120174293A1 - Helmet moisture removal system - Google Patents
Helmet moisture removal system Download PDFInfo
- Publication number
- US20120174293A1 US20120174293A1 US12/109,830 US10983008A US2012174293A1 US 20120174293 A1 US20120174293 A1 US 20120174293A1 US 10983008 A US10983008 A US 10983008A US 2012174293 A1 US2012174293 A1 US 2012174293A1
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- United States
- Prior art keywords
- helmet
- region
- moisture
- evaporative
- moisture removal
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/28—Ventilating arrangements
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
Definitions
- the invention relates to a moisture removal system for protective helmets. More specifically, the invention relates to helmets with a moisture removal system that includes an absorbent region is positioned on the inside of the helmet and an evaporative region positioned outside of the helmet.
- Traditional helmet liner, harness, and padding systems used in military and sporting applications often contain moisture-absorption components, such as fabrics, that absorb a user's perspiration or other moisture released within a helmet.
- protective padding located on the inside surface of a helmet usually employs a moisture-wicking fabric that covers the side of a pad in contact with the head of the user in order to help remove perspiration from the head and adjacent areas surrounding the pad. See for example U.S. Pat. No. 6,467,099, which describes a cushioning structure used within military helmets that includes a moisture-removing outer layer.
- the moisture-removing layer can become saturated and no longer absorb perspiration generated by the user. This may occur as a result of the rate of evaporation of the perspiration or other moisture contained within the helmet being insufficient to prevent saturation of the fabric, and is particularly likely to occur when the helmet is worn in a hot and/or humid environment.
- the fabric or other moisture-absorption components of the helmet become saturated, the user may become uncomfortable and/or overheated due to the accumulation of moisture and the helmet's diminished capacity to dissipate heat. This discomfort can negatively affect the performance of the user and may cause the user to remove the helmet, which eliminates the protection conferred by the helmet and may result in injury.
- the present invention provides a protective helmet that includes a concave shell of protective material including an inside surface and an outside surface, configured to cover at least an upper portion of a user's head, and a moisture removal system that includes an absorbent region and an evaporative region, wherein the absorbent region is positioned on the inside surface and the evaporative region is positioned outside of the helmet.
- the protective helmet encompasses a wide variety of embodiments.
- the absorbent region is attached to a helmet liner, harness, or padding system within the helmet.
- the evaporative region is positioned on the outside surface of the helmet.
- the moisture removal system includes a plurality of sheets.
- the plurality of sheets comprise a moisture wicking material, and each of the sheets includes an absorbent region and an evaporative region.
- the moisture wicking material includes a polyester or polypropylene fabric.
- the moisture removal system includes a single sheet.
- the moisture removal system can further include a strap for holding a pad in the absorbent region and the evaporative region can include a plurality of straps that can be attached at the ends of the straps when they are wrapped over the outside surface of the helmet.
- the protective helmet includes a connective region is provided between the absorbent region and the evaporative region.
- the evaporative region is configured as camouflage.
- the moisture removal system includes one or more sheets of moisture wicking material, each of which includes an absorbent region and an evaporative region.
- the absorbent region is attached to a helmet liner, suspension, or padding system within the helmet.
- the padding system includes a plurality of pads that include moisture wicking material connected by piping material to absorbent region.
- the evaporative region includes one or more folds in order to increase the evaporative surface area of the evaporative region.
- the protective helmet can be a combat helmet in some embodiments of the invention.
- the present invention provides a moisture removal kit for a helmet that includes one or more sheets of moisture wicking material, each of which includes an absorbent region and an evaporative region, and means for attaching the absorbent region to the inside of the helmet and the evaporative region to the outside of the helmet.
- the moisture wicking material comprises a polyester or polypropylene fabric.
- the one or more sheets of moisture wicking material are connected by piping material that includes means for attachment to one or more pads inside a helmet.
- the evaporative region includes one or more folds in order to increase the evaporative surface area of the evaporative region.
- the absorbent regions include one or more attachment devices to attach the absorbent regions to a harness, pad, or the inside surface of the helmet.
- FIG. 1 is a front elevation view of a helmet including a harness and a moisture removal system.
- FIG. 2 is a bottom view of a helmet including pads, a harness, and a moisture removal system.
- FIG. 3 is a plan view of a sheet of moisture wicking material that includes an absorbent region and an evaporative region linked by a connective region.
- FIG. 4 is a front elevation view of a helmet including a moisture removal system that passes through transfer holes provided in the helmet.
- FIG. 5 is a side elevation view of a sheet of moisture wicking material that includes folding in the evaporative region.
- FIG. 6 is a side elevation view of a helmet in which the evaporative regions are configured as camouflage.
- FIG. 7 is a plan view of a moisture removal kit including four sheets of moisture wicking material that can be attached to the inside surface of a helmet.
- FIG. 8 is a top plan view of a single-piece moisture removal kit that can be wrapped around a helmet.
- FIG. 9 shows a method for attacking a single-piece moisture removal kit, including A) a side elevation view of the kit and helmet before attachment, B) a side elevation view of the kit placed within the helmet, and C) a top view of the moisture removal system secured over the top of the helmet.
- the present invention provides a device for use with a protective helmet that helps dissipate moisture accumulating in the helmet.
- the device can be included with a protective helmet, or added through use of a kit.
- FIG. 1 a perspective view of a protective helmet 10 including an inside surface 12 and an outside surface 14 is provided.
- the protective helmet 10 forms a generally concave shell, and is configured to cover at least an upper portion of a user's head.
- the helmet 10 includes a front portion 16 that is positioned over the forehead of a user and a rear portion 18 that is positioned at the back of a user's head. Between the front portion 16 and the rear portion 18 are side portions 20 that pass near and may or may not cover the ears of the user.
- the helmet 10 may be configured to fit over the head of user's having a variety of head shapes and sizes.
- the protective helmet 10 will typically be formed from a hard, impact absorbing material that provides the user with resistance to head injury due to impact, puncture, and/or abrasion when properly utilized.
- the particular material and exact configuration of the helmet will vary depending on its intended use.
- helmets designed for sport use e.g, skiing, bicycling, rock climbing, or football
- a hard, lightweight plastic e.g., polystyrene
- Target helmets also known as ballistic helmets, represent another type of helmet, designed to provide protection against more severe threats such as bullets and shrapnel, and may be formed from steel or, more preferably, lightweight ballistic materials such as phenolic resin-treated fabrics (e.g., Kevlar or Aramid).
- protective helmets 10 are those used by construction workers and security personnel such as riot police. Regardless of their intended use, all types of protective helmets are susceptible to moisture accumulation as a result of extended use, strenuous activity, or warm external temperature (e.g, 25° C. or higher).
- the protective helmet 10 also includes a moisture removal system 22 .
- the moisture removal system includes one or more sections of moisture-wicking materials to create a moisture attracting capillary effect that can transport water away from the inside the helmet.
- the moisture removal system 22 includes one or more absorbent regions 24 and one or more evaporative regions 26 .
- the absorbent region 24 or regions, is positioned on the inside surface 12 of the protective helmet 10 where it is positioned to absorb moisture from the user.
- the evaporative region 26 or regions, on the other hand, is positioned on the outside surface 14 of the protective helmet 10 where it can release collected moisture into the air.
- the moisture removal system 22 can be attached to the inner surface 12 and/or the outer surface 14 of the protective helmet 10 using adhesives, clips, hook and loop fasteners, or other attachment devices known to those skilled in the art.
- the moisture removal system 22 forms a moisture wicking path that draws the moisture from one or more moisture-absorbing or saturation-prone regions within the protective helmet 10 to keep the user comfortable and the helmet 10 dry.
- the absorbent region 24 and evaporative region 26 can be composed of the same moisture wicking material, or more than one type of moisture wicking material can be used.
- Wicking fabrics as known by those skilled in the art, are typically formed of water-repellent fibers or microfibers formed into long parallel strands. Examples of moisture wicking materials include polyester or polypropylene fabrics such as Polartec® Series 100, Coolmax® Mesh, and PowderDry® Mesh.
- water is not absorbed by the fabric but rather is carried along the fabric by capillary action to a region of lower water density. Accordingly, in the context of the present invention, water collected inside the helmet 10 by the absorbent region 24 will move by capillary action to the evaporative region 26 , where the water density remains low due to evaporation of moisture into the air. Generally, the greater the difference between the moisture level of the air within the helmet and the moisture level of the air outside the helmet, the more rapidly the moisture removal system 22 will remove moisture from within the helmet 10 by capillary action.
- the moisture removal system 22 can have a variety of different configurations.
- the moisture removal system 22 can include one or more sheets 28 of moisture wicking material, each of which includes an absorbent region 24 and an evaporative region 26 .
- the moisture removal system 22 is shown as a plurality of rectangular sheets 28 of moisture wicking material positioned so that the absorbent region 24 is inside the helmet and the evaporative region 26 is positioned on the outside surface 14 of the helmet 10 .
- the sheets 28 of moisture wicking material may be positioned so that they wrap around the rim 30 of the helmet 10 .
- they may be allowed to hang down freely from the helmet 10 to increase the surface area of the evaporative region 26 .
- the absorbent region 24 can be connected to the evaporative region 26 by a connective region 32 .
- the connective region 32 may be provided at the point where the sheet 28 passes from the inside surface 12 of the helmet 10 to the outside surface 14 of the helmet 10 .
- the sheets 28 of moisture wicking material can be formed from a single piece of material, in which the absorbent region 24 , the evaporative region 26 , and the connective region 32 are simply all different functional regions within the sheet 28 . Alternately, as shown in FIG. 3 , the regions can be formed from different materials.
- the connective region 32 can include thin strips or piping placed between the absorptive region 24 and the evaporative region 26 . The use of thin strips or piping may provide greater flexibility and decreased encumbrance where the moisture removal system 22 is bends or fits between narrow holes in the helmet 10 .
- the connective region 32 of the sheets 28 can run directly through transfer holes 34 in the helmet 10 , as shown in FIG. 4 .
- the moisture removal system 22 may be wrapped within moisture wicking material, in which case all or a part of the inner surface 12 of the helmet 10 would be covered by absorbent region 24 and all or part of the outer surface 14 of the helmet 10 would be covered by evaporative region 26 .
- the connective region 32 in this embodiment can be positioned along the rim 30 or adjacent to one or more transfer holes 34 .
- the evaporative region 26 may also be shaped and textured in a variety of ways.
- the evaporative region 26 may include one or more folds 36 to increase the evaporative surface area of the evaporative region 26 .
- the evaporative surface area is the surface area over a given region from which evaporation can readily occur.
- FIG. 5 shows an accordion pleated evaporative region “radiator” with a higher evaporative surface area than a flat, unfolded sheet of material. Not only does the folding provide for a greater evaporative surface area on the external face of the evaporative region 26 , but it may also allow evaporation to occur from the internal face of the evaporative region 26 that faces the helmet 10 . Evaporation leaving the evaporative region 26 is indicated by dotted arrows in the figure.
- the evaporative region 26 can be configured to provide camouflage for the helmet 10 , as shown in FIG. 6 .
- An evaporative region 26 configured to provide camouflage will have a natural and/or irregular shape that helps hide or disrupt the profile of the helmet 10 .
- the evaporative region 26 may be formed to resemble leaves, twigs, or grass. While the shape of the evaporative region 26 is altered in this embodiment to provide camouflage, it still functions as an evaporative region 26 , as described herein.
- the moisture removal system 22 can be incorporated into an existing camouflage covers used on a combat helmet.
- the moisture removal system 22 may be used as a stand-alone item within a protective helmet 10 , or it may be integrated with a helmet liner, pads 38 and/or a harness 40 within the helmet 10 .
- the moisture removal system 22 can be integrated with the pads and/or harness by attaching one or more absorbent regions 24 to the pads 38 and/or harness 40 with moisture wicking material.
- the attachment can be temporary using an attachment device 42 such as a clip or fabric hook-and-loop fasteners (e.g., Velcro®), or the moisture removal system 22 can be permanently attached to the pads 38 and/or harness by sewing or adhesives.
- Pads 38 are sections of impact-resistant material that may be placed within the helmet 10 to decrease contact between the user's head and the helmet 10 , which is typically made of a hard material.
- the pads 38 can also include a layer of moisture wicking material, as described in U.S. Pat. No. 6,467,099, the disclosure of which incorporated herein by reference.
- the moisture removal system 22 can be positioned in contact with the pads 38 so that the absorbent regions 24 will absorb moisture from the pads 38 and wick it to the evaporative region 26 , thereby drying the pads 38 .
- An example of a moisture removal system 22 in which the pads 38 are contacted is shown in FIG. 2 .
- the pads 38 may be positioned anywhere on the inside surface 12 of the helmet 10 where they serve to increase the comfort and/or protection provided by the helmet 10 .
- the moisture removal system 22 can also be integrated with a harness 40 .
- a harness 40 used in a helmet 10 is typically composed of cloth straps 44 that are attached to the inside surface 12 of the helmet 10 using rivets 46 and are connected to one another using a loop 48 .
- the cloth straps 44 are long rectangular strips that are riveted at each end to the helmet 10 and wrap through the loop 48 .
- the harness often also includes a headband 50 portion that runs along the inside surface 12 of the helmet 10 and is attached to the cloth straps 44 .
- the harness 40 forms an elastic structure that can support the helmet 10 on a user's head while decreasing contact between the user's head and the hard shell of the helmet 10 .
- the harness 40 has a tendency to absorb moisture from the head of the user which can accumulate if not removed.
- the cloth straps 44 and headband 50 may accumulate moisture.
- the moisture removal system 22 can be positioned in contact with the cloth straps 44 and/or the headband 50 of the harness 40 so that the absorbent regions 24 will absorb moisture from the harness 40 and wick it to the evaporative region 26 , thereby drying the harness 40 .
- the moisture removal system 22 can be provided as part of a helmet 10 , or it can be provided as a moisture removal kit 52 that can be used to upgrade an existing helmet 10 .
- An embodiment of the moisture removal kit 52 is shown in FIG. 7 .
- the moisture removal kit 52 include one or more sheets 28 of moisture wicking material each of which include an absorbent region 24 , a connective region 32 , and an evaporative region 26 .
- the absorbent regions 24 may include an attachment device 42 to attach the absorbent regions 24 of the moisture removal kit 52 to the inside surface 12 of the helmet 10 or to harnesses 40 or pads 38 provided within the helmet 10 .
- a hanging line 54 may optionally be provided that connects all of the sheets 28 into a single moisture removal system 22 to help position the sheets 28 , avoid loss of sheets, and ensure that an appropriate number of sheets 28 are provided for a given helmet 10 .
- the hanging line 54 may be any suitable material, such as a wire, string, or thin strip of wicking material.
- FIGS. 8 and 9 A- 9 B An additional embodiment of the moisture removal system 22 and a method for attaching the moisture removal system 22 to a protective helmet 10 is shown in FIGS. 8 and 9 A- 9 B.
- This embodiment of the moisture removal system 22 was specifically designed to provide a moisture removal system for the advanced combat helmet or the marine light-weight helmet. However, it can readily be used with a variety of other types of protective helmets 10 .
- the absorbent region 24 is provided in the center region of this embodiment of the moisture removal system 22 , whereas the flaps 56 provide the evaporative region 26 .
- This embodiment of the moisture removal system 22 can be used in protective helmets 10 that include multiple pads 38 that are secured to the inner surface 12 of the protective helmet 10 with hook and loop fasteners, as can be more readily seen in FIGS. 9A through 9C . While this embodiment of the moisture removal system 22 can be easily attached using pads attached by hook and loop fasteners, it can also be used in protective helmets which do include pads or attach the pads using other techniques.
- the design consists of a wicking fabric capable of absorbing moisture and wicking it through as well as across the fabric in all directions.
- the fabric is constructed with multiple flaps 56 that can be extended over the outer surface 14 of a protective helmet 10 .
- a strap 58 can be included, typically near the center of the moisture removal system 22 , to secure a pad 38 to the moisture removal system 22 .
- This pad 38 can be a “crown pad” that will be positioned in the center of the inside surface 12 of the protective helmet 10 .
- the strap 58 attaches the pad 38 to the moisture removal system 22 while keeping a portion of the hook and loop fastener site 60 of the pad 38 exposed.
- the moisture removal system 22 is shown just before attachment in FIG. 9A .
- the hook and loop fastener site 60 of the pad 38 is then attached to one or more complementary hook and loop fastener sites 62 provided on the inner surface 12 of the protective helmet 10 , effectively attaching the moisture removal system 22 to the inside surface 12 of the protective helmet 10 .
- the multiple flaps 56 can then be brought across the rim 30 of the protective helmet 10 to the outer surface 14 , as shown in FIG. 9B .
- the flaps 56 are then attached to one another using attachment devices 42 (e.g., hook and loop fasteners) positioned at the ends of the flaps 56 , as shown in FIG. 9C .
- the fasteners 42 can be provided in such a manner that each flap 56 is attached to at least two of the other flaps 56 in order to better secure the moisture removal system 22 to the helmet 10 .
- a moisture removal system 22 that includes four flaps 56 is shown. The use of four flaps 56 readily allows the flaps 56 to extend over the outer surface 14 without interfering with the chinstrap or other devices such as a front night vision goggle mount that may be attached to the protective helmet 10 .
Abstract
A moisture removal system for a helmet is provided. The moisture removal system includes an absorbent region that is positioned inside the helmet and an evaporative region positioned outside the helmet, and is made of a moisture wicking material that carries moisture collected by the absorbent region to the evaporative region where it is dispersed by evaporation. The moisture removal system can withdraw moisture from other helmet components such as pads and/or the harness, and can be provided within a helmet or as a kit that is used to upgrade existing helmets.
Description
- This application claims the benefit of U.S. Provisional Application No. 60/914,400, filed Apr. 27, 2007, which is incorporated by reference herein.
- The invention relates to a moisture removal system for protective helmets. More specifically, the invention relates to helmets with a moisture removal system that includes an absorbent region is positioned on the inside of the helmet and an evaporative region positioned outside of the helmet.
- Traditional helmet liner, harness, and padding systems used in military and sporting applications often contain moisture-absorption components, such as fabrics, that absorb a user's perspiration or other moisture released within a helmet. For example, protective padding located on the inside surface of a helmet usually employs a moisture-wicking fabric that covers the side of a pad in contact with the head of the user in order to help remove perspiration from the head and adjacent areas surrounding the pad. See for example U.S. Pat. No. 6,467,099, which describes a cushioning structure used within military helmets that includes a moisture-removing outer layer.
- However, when the user perspires for a long period of time, the moisture-removing layer can become saturated and no longer absorb perspiration generated by the user. This may occur as a result of the rate of evaporation of the perspiration or other moisture contained within the helmet being insufficient to prevent saturation of the fabric, and is particularly likely to occur when the helmet is worn in a hot and/or humid environment. When the fabric or other moisture-absorption components of the helmet become saturated, the user may become uncomfortable and/or overheated due to the accumulation of moisture and the helmet's diminished capacity to dissipate heat. This discomfort can negatively affect the performance of the user and may cause the user to remove the helmet, which eliminates the protection conferred by the helmet and may result in injury.
- Thus, there is a need for an improved method or device for preventing perspiration and other moisture from accumulating within a helmet, particularly within the moisture absorbing materials such as fabrics that may be provided within a helmet.
- In one aspect, the present invention provides a protective helmet that includes a concave shell of protective material including an inside surface and an outside surface, configured to cover at least an upper portion of a user's head, and a moisture removal system that includes an absorbent region and an evaporative region, wherein the absorbent region is positioned on the inside surface and the evaporative region is positioned outside of the helmet.
- The protective helmet encompasses a wide variety of embodiments. For instance, in one embodiment, the absorbent region is attached to a helmet liner, harness, or padding system within the helmet. In another embodiment, the evaporative region is positioned on the outside surface of the helmet. In yet another embodiment, the moisture removal system includes a plurality of sheets. In further embodiments, the plurality of sheets comprise a moisture wicking material, and each of the sheets includes an absorbent region and an evaporative region. In yet another embodiment, the moisture wicking material includes a polyester or polypropylene fabric.
- Alternately, the moisture removal system includes a single sheet. For embodiments that use a single sheet, the moisture removal system can further include a strap for holding a pad in the absorbent region and the evaporative region can include a plurality of straps that can be attached at the ends of the straps when they are wrapped over the outside surface of the helmet.
- In another embodiment, the protective helmet includes a connective region is provided between the absorbent region and the evaporative region. In a further embodiment, the evaporative region is configured as camouflage. In yet another embodiment, the moisture removal system includes one or more sheets of moisture wicking material, each of which includes an absorbent region and an evaporative region. In further embodiments, the absorbent region is attached to a helmet liner, suspension, or padding system within the helmet. In another embodiment, the padding system includes a plurality of pads that include moisture wicking material connected by piping material to absorbent region. In a further embodiment, the evaporative region includes one or more folds in order to increase the evaporative surface area of the evaporative region. The protective helmet can be a combat helmet in some embodiments of the invention.
- In another aspect, the present invention provides a moisture removal kit for a helmet that includes one or more sheets of moisture wicking material, each of which includes an absorbent region and an evaporative region, and means for attaching the absorbent region to the inside of the helmet and the evaporative region to the outside of the helmet. In one embodiment of the moisture removal kit, the moisture wicking material comprises a polyester or polypropylene fabric. In another embodiment, the one or more sheets of moisture wicking material are connected by piping material that includes means for attachment to one or more pads inside a helmet. In a further embodiment, the evaporative region includes one or more folds in order to increase the evaporative surface area of the evaporative region. In additional embodiments, the absorbent regions include one or more attachment devices to attach the absorbent regions to a harness, pad, or the inside surface of the helmet.
- Unless otherwise specified, “a,” “an,” “the,” and “at least one” are used interchangeably and mean one or more than one. Also herein, the recitations of numerical ranges by endpoints include all numbers subsumed within that range (e.g., 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, 5, etc.). It is also understood that all spatial references, such as “horizontal,” “vertical,” “top,” “upper,” “lower,” “bottom,” “left,” and “right,” are for illustrative purposes only and can be varied within the scope of the disclosure.
- The following figures illustrate various aspects of one or more embodiments of the present invention, but are not intended to limit the present invention to the embodiments shown.
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FIG. 1 is a front elevation view of a helmet including a harness and a moisture removal system. -
FIG. 2 is a bottom view of a helmet including pads, a harness, and a moisture removal system. -
FIG. 3 is a plan view of a sheet of moisture wicking material that includes an absorbent region and an evaporative region linked by a connective region. -
FIG. 4 is a front elevation view of a helmet including a moisture removal system that passes through transfer holes provided in the helmet. -
FIG. 5 is a side elevation view of a sheet of moisture wicking material that includes folding in the evaporative region. -
FIG. 6 is a side elevation view of a helmet in which the evaporative regions are configured as camouflage. -
FIG. 7 is a plan view of a moisture removal kit including four sheets of moisture wicking material that can be attached to the inside surface of a helmet. -
FIG. 8 is a top plan view of a single-piece moisture removal kit that can be wrapped around a helmet. -
FIG. 9 shows a method for attacking a single-piece moisture removal kit, including A) a side elevation view of the kit and helmet before attachment, B) a side elevation view of the kit placed within the helmet, and C) a top view of the moisture removal system secured over the top of the helmet. - The present invention provides a device for use with a protective helmet that helps dissipate moisture accumulating in the helmet. The device can be included with a protective helmet, or added through use of a kit. Referring to
FIG. 1 , a perspective view of aprotective helmet 10 including aninside surface 12 and anoutside surface 14 is provided. Theprotective helmet 10 forms a generally concave shell, and is configured to cover at least an upper portion of a user's head. Thehelmet 10 includes afront portion 16 that is positioned over the forehead of a user and arear portion 18 that is positioned at the back of a user's head. Between thefront portion 16 and therear portion 18 areside portions 20 that pass near and may or may not cover the ears of the user. Thehelmet 10 may be configured to fit over the head of user's having a variety of head shapes and sizes. - The
protective helmet 10 will typically be formed from a hard, impact absorbing material that provides the user with resistance to head injury due to impact, puncture, and/or abrasion when properly utilized. The particular material and exact configuration of the helmet will vary depending on its intended use. For example, helmets designed for sport use (e.g, skiing, bicycling, rock climbing, or football) are typically formed from a hard, lightweight plastic (e.g., polystyrene) to protect the user from falls or impacts, and may have an aerodynamic shape for high speed sports. Combat helmets, also known as ballistic helmets, represent another type of helmet, designed to provide protection against more severe threats such as bullets and shrapnel, and may be formed from steel or, more preferably, lightweight ballistic materials such as phenolic resin-treated fabrics (e.g., Kevlar or Aramid). Other examples ofprotective helmets 10 are those used by construction workers and security personnel such as riot police. Regardless of their intended use, all types of protective helmets are susceptible to moisture accumulation as a result of extended use, strenuous activity, or warm external temperature (e.g, 25° C. or higher). - The
protective helmet 10 also includes amoisture removal system 22. The moisture removal system includes one or more sections of moisture-wicking materials to create a moisture attracting capillary effect that can transport water away from the inside the helmet. Themoisture removal system 22 includes one or moreabsorbent regions 24 and one or moreevaporative regions 26. Theabsorbent region 24, or regions, is positioned on theinside surface 12 of theprotective helmet 10 where it is positioned to absorb moisture from the user. Theevaporative region 26, or regions, on the other hand, is positioned on theoutside surface 14 of theprotective helmet 10 where it can release collected moisture into the air. Themoisture removal system 22 can be attached to theinner surface 12 and/or theouter surface 14 of theprotective helmet 10 using adhesives, clips, hook and loop fasteners, or other attachment devices known to those skilled in the art. - The
moisture removal system 22 forms a moisture wicking path that draws the moisture from one or more moisture-absorbing or saturation-prone regions within theprotective helmet 10 to keep the user comfortable and thehelmet 10 dry. Theabsorbent region 24 andevaporative region 26 can be composed of the same moisture wicking material, or more than one type of moisture wicking material can be used. Wicking fabrics, as known by those skilled in the art, are typically formed of water-repellent fibers or microfibers formed into long parallel strands. Examples of moisture wicking materials include polyester or polypropylene fabrics such as Polartec® Series 100, Coolmax® Mesh, and PowderDry® Mesh. - As a result of the water-repellent nature of the moisture wicking material, water is not absorbed by the fabric but rather is carried along the fabric by capillary action to a region of lower water density. Accordingly, in the context of the present invention, water collected inside the
helmet 10 by theabsorbent region 24 will move by capillary action to theevaporative region 26, where the water density remains low due to evaporation of moisture into the air. Generally, the greater the difference between the moisture level of the air within the helmet and the moisture level of the air outside the helmet, the more rapidly themoisture removal system 22 will remove moisture from within thehelmet 10 by capillary action. - The
moisture removal system 22 can have a variety of different configurations. For example, as shown inFIGS. 1 and 2 , themoisture removal system 22 can include one ormore sheets 28 of moisture wicking material, each of which includes anabsorbent region 24 and anevaporative region 26. InFIGS. 1 and 2 , themoisture removal system 22 is shown as a plurality ofrectangular sheets 28 of moisture wicking material positioned so that theabsorbent region 24 is inside the helmet and theevaporative region 26 is positioned on theoutside surface 14 of thehelmet 10. Thesheets 28 of moisture wicking material may be positioned so that they wrap around therim 30 of thehelmet 10. Alternately, rather than placing the evaporative region(s) 26 on theouter surface 14 of thehelmet 10, they may be allowed to hang down freely from thehelmet 10 to increase the surface area of theevaporative region 26. - The
absorbent region 24 can be connected to theevaporative region 26 by aconnective region 32. Theconnective region 32 may be provided at the point where thesheet 28 passes from theinside surface 12 of thehelmet 10 to theoutside surface 14 of thehelmet 10. Thesheets 28 of moisture wicking material can be formed from a single piece of material, in which theabsorbent region 24, theevaporative region 26, and theconnective region 32 are simply all different functional regions within thesheet 28. Alternately, as shown inFIG. 3 , the regions can be formed from different materials. For example, theconnective region 32 can include thin strips or piping placed between theabsorptive region 24 and theevaporative region 26. The use of thin strips or piping may provide greater flexibility and decreased encumbrance where themoisture removal system 22 is bends or fits between narrow holes in thehelmet 10. - In a further embodiment, rather than wrapping the moisture wicking material around the
rim 30, theconnective region 32 of thesheets 28 can run directly through transfer holes 34 in thehelmet 10, as shown inFIG. 4 . Generally, it is preferable to reduce the path that moisture must travel through the moisture wicking material to reach theevaporative region 26 from the absorbent 24 region, since a shortened route allows the moisture inside thehelmet 10 to be quickly transported or drawn outside of thehelmet 10 where it will evaporate, and decreases the amount of moisture-laden fabric present within thehelmet 10. - Various other configurations of the
moisture removal system 22 are also contemplated within the scope of the invention. For example, all or part of both theinner surface 12 andouter surface 14 of thehelmet 10 may be wrapped within moisture wicking material, in which case all or a part of theinner surface 12 of thehelmet 10 would be covered byabsorbent region 24 and all or part of theouter surface 14 of thehelmet 10 would be covered byevaporative region 26. Theconnective region 32 in this embodiment can be positioned along therim 30 or adjacent to one or more transfer holes 34. - The
evaporative region 26 may also be shaped and textured in a variety of ways. For example, theevaporative region 26 may include one ormore folds 36 to increase the evaporative surface area of theevaporative region 26. The evaporative surface area is the surface area over a given region from which evaporation can readily occur. For example,FIG. 5 shows an accordion pleated evaporative region “radiator” with a higher evaporative surface area than a flat, unfolded sheet of material. Not only does the folding provide for a greater evaporative surface area on the external face of theevaporative region 26, but it may also allow evaporation to occur from the internal face of theevaporative region 26 that faces thehelmet 10. Evaporation leaving theevaporative region 26 is indicated by dotted arrows in the figure. - Alternately, or in addition, the
evaporative region 26 can be configured to provide camouflage for thehelmet 10, as shown inFIG. 6 . Anevaporative region 26 configured to provide camouflage will have a natural and/or irregular shape that helps hide or disrupt the profile of thehelmet 10. For example, theevaporative region 26 may be formed to resemble leaves, twigs, or grass. While the shape of theevaporative region 26 is altered in this embodiment to provide camouflage, it still functions as anevaporative region 26, as described herein. Alternately, rather than being configured to provide camouflage itself, themoisture removal system 22 can be incorporated into an existing camouflage covers used on a combat helmet. - The
moisture removal system 22 may be used as a stand-alone item within aprotective helmet 10, or it may be integrated with a helmet liner,pads 38 and/or aharness 40 within thehelmet 10. Themoisture removal system 22 can be integrated with the pads and/or harness by attaching one or moreabsorbent regions 24 to thepads 38 and/or harness 40 with moisture wicking material. The attachment can be temporary using anattachment device 42 such as a clip or fabric hook-and-loop fasteners (e.g., Velcro®), or themoisture removal system 22 can be permanently attached to thepads 38 and/or harness by sewing or adhesives. -
Pads 38 are sections of impact-resistant material that may be placed within thehelmet 10 to decrease contact between the user's head and thehelmet 10, which is typically made of a hard material. Thepads 38 can also include a layer of moisture wicking material, as described in U.S. Pat. No. 6,467,099, the disclosure of which incorporated herein by reference. As a result of their positioning on theinside surface 12 of thehelmet 10 where they are in contact with the user's head, thepads 38 will often absorb perspiration from the user when thehelmet 10 is being worn. Themoisture removal system 22 can be positioned in contact with thepads 38 so that theabsorbent regions 24 will absorb moisture from thepads 38 and wick it to theevaporative region 26, thereby drying thepads 38. An example of amoisture removal system 22 in which thepads 38 are contacted is shown inFIG. 2 . Thepads 38 may be positioned anywhere on theinside surface 12 of thehelmet 10 where they serve to increase the comfort and/or protection provided by thehelmet 10. - The
moisture removal system 22 can also be integrated with aharness 40. As shown inFIG. 2 , aharness 40 used in ahelmet 10 is typically composed of cloth straps 44 that are attached to theinside surface 12 of thehelmet 10 usingrivets 46 and are connected to one another using aloop 48. In the configuration shown in the figure, the cloth straps 44 are long rectangular strips that are riveted at each end to thehelmet 10 and wrap through theloop 48. The harness often also includes aheadband 50 portion that runs along theinside surface 12 of thehelmet 10 and is attached to the cloth straps 44. By usingseveral cloth straps 44, theharness 40 forms an elastic structure that can support thehelmet 10 on a user's head while decreasing contact between the user's head and the hard shell of thehelmet 10. However, as with thepads 38, theharness 40 has a tendency to absorb moisture from the head of the user which can accumulate if not removed. For example, the cloth straps 44 andheadband 50 may accumulate moisture. Themoisture removal system 22 can be positioned in contact with the cloth straps 44 and/or theheadband 50 of theharness 40 so that theabsorbent regions 24 will absorb moisture from theharness 40 and wick it to theevaporative region 26, thereby drying theharness 40. - The
moisture removal system 22 can be provided as part of ahelmet 10, or it can be provided as a moisture removal kit 52 that can be used to upgrade an existinghelmet 10. An embodiment of the moisture removal kit 52 is shown inFIG. 7 . The moisture removal kit 52 include one ormore sheets 28 of moisture wicking material each of which include anabsorbent region 24, aconnective region 32, and anevaporative region 26. Theabsorbent regions 24 may include anattachment device 42 to attach theabsorbent regions 24 of the moisture removal kit 52 to theinside surface 12 of thehelmet 10 or toharnesses 40 orpads 38 provided within thehelmet 10. A hanging line 54 may optionally be provided that connects all of thesheets 28 into a singlemoisture removal system 22 to help position thesheets 28, avoid loss of sheets, and ensure that an appropriate number ofsheets 28 are provided for a givenhelmet 10. The hanging line 54 may be any suitable material, such as a wire, string, or thin strip of wicking material. - An additional embodiment of the
moisture removal system 22 and a method for attaching themoisture removal system 22 to aprotective helmet 10 is shown in FIGS. 8 and 9A-9B. This embodiment of themoisture removal system 22 was specifically designed to provide a moisture removal system for the advanced combat helmet or the marine light-weight helmet. However, it can readily be used with a variety of other types ofprotective helmets 10. Theabsorbent region 24 is provided in the center region of this embodiment of themoisture removal system 22, whereas theflaps 56 provide theevaporative region 26. - This embodiment of the
moisture removal system 22 can be used inprotective helmets 10 that includemultiple pads 38 that are secured to theinner surface 12 of theprotective helmet 10 with hook and loop fasteners, as can be more readily seen inFIGS. 9A through 9C . While this embodiment of themoisture removal system 22 can be easily attached using pads attached by hook and loop fasteners, it can also be used in protective helmets which do include pads or attach the pads using other techniques. - The design consists of a wicking fabric capable of absorbing moisture and wicking it through as well as across the fabric in all directions. The fabric is constructed with
multiple flaps 56 that can be extended over theouter surface 14 of aprotective helmet 10. Astrap 58 can be included, typically near the center of themoisture removal system 22, to secure apad 38 to themoisture removal system 22. Thispad 38 can be a “crown pad” that will be positioned in the center of theinside surface 12 of theprotective helmet 10. Thestrap 58 attaches thepad 38 to themoisture removal system 22 while keeping a portion of the hook and loop fastener site 60 of thepad 38 exposed. Themoisture removal system 22 is shown just before attachment inFIG. 9A . The hook and loop fastener site 60 of thepad 38 is then attached to one or more complementary hook andloop fastener sites 62 provided on theinner surface 12 of theprotective helmet 10, effectively attaching themoisture removal system 22 to theinside surface 12 of theprotective helmet 10. - The
multiple flaps 56 can then be brought across therim 30 of theprotective helmet 10 to theouter surface 14, as shown inFIG. 9B . Theflaps 56 are then attached to one another using attachment devices 42 (e.g., hook and loop fasteners) positioned at the ends of theflaps 56, as shown inFIG. 9C . In some embodiments, thefasteners 42 can be provided in such a manner that eachflap 56 is attached to at least two of theother flaps 56 in order to better secure themoisture removal system 22 to thehelmet 10. In the embodiment shown inFIGS. 8-9 , amoisture removal system 22 that includes fourflaps 56 is shown. The use of fourflaps 56 readily allows theflaps 56 to extend over theouter surface 14 without interfering with the chinstrap or other devices such as a front night vision goggle mount that may be attached to theprotective helmet 10. - The complete disclosure of all documents such as patents, patent applications, and publications cited herein are incorporated by reference. While various embodiments in accordance with the present invention have been shown and described, it is understood the invention is not limited thereto, and is susceptible to numerous changes and modifications as known to those skilled in the art. Therefore, this invention is not limited to the details shown and described herein, and includes all such changes and modifications as encompassed by the scope of the appended claim.
Claims (20)
1. A protective helmet, comprising:
a concave shell of protective material including an inside surface and an outside surface, configured to cover at least an upper portion of a user's head, and
a moisture removal system comprising an absorbent region and an evaporative region, wherein the absorbent region is positioned on the inside surface and the evaporative region is positioned outside of the helmet.
2. The protective helmet of claim 1 , wherein the absorbent region is attached to a helmet liner, harness, or padding system within the helmet.
3. The protective helmet of claim 1 , wherein the evaporative region is positioned on the outside surface of the helmet.
4. The protective helmet of claim 1 , wherein the moisture removal system comprises a plurality of sheets.
5. The protective helmet of claim 4 , wherein the plurality of sheets comprise a moisture wicking material, and each of the sheets includes an absorbent region and an evaporative region.
6. The protective helmet of claim 5 , wherein the moisture wicking material comprises a polyester or polypropylene fabric.
7. The protective helmet of claim 1 , wherein the moisture removal system comprises a single sheet.
8. The protective helmet of claim 7 , wherein the moisture removal system comprises a moisture wicking material.
9. The protective helmet of claim 7 , wherein the moisture removal system includes a strap for holding a pad in the absorbent region and the evaporative region comprises a plurality of straps that can be attached at the ends of the straps when they are wrapped over the outside surface of the helmet.
10. The protective helmet of claim 1 , wherein a connective region is provided between the absorbent region and the evaporative region.
11. The protective helmet of claim 1 , wherein the evaporative region is configured as camouflage.
12. The protective helmet of claim 1 , wherein the absorbent region is attached to a helmet liner, suspension, or padding system within the helmet.
13. The protective helmet of claim 12 , wherein the padding system comprises a plurality of pads that include moisture wicking material that are connected by piping material to an absorbent region.
14. The protective helmet of claim 1 , wherein the evaporative region includes one or more folds in order to increase the evaporative surface area of the evaporative region.
15. The protective helmet of claim 1 , wherein the protective helmet is a combat helmet.
16. A moisture removal kit for a helmet, comprising one or more sheets of moisture wicking material, each of which includes an absorbent region and an evaporative region, and means for attaching the absorbent region to the inside of the helmet and the evaporative region to the outside of the helmet.
17. The moisture removal kit of claim 16 , wherein the moisture wicking material comprises a polyester or polypropylene fabric.
18. The moisture removal kit of claim 16 , wherein the one or more sheets of moisture wicking material are connected by piping material that includes means for attachment to one or more pads inside a helmet.
19. The moisture removal kit of claim 16 , wherein the evaporative region includes one or more folds in order to increase the evaporative surface area of the evaporative region.
20. The moisture removal kit of claim 16 , wherein the absorbent regions include one or more attachment devices to attach the absorbent regions to a harness, pad, or the inside surface of the helmet.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/109,830 US20120174293A1 (en) | 2007-04-27 | 2008-04-25 | Helmet moisture removal system |
PCT/US2008/061732 WO2009014784A2 (en) | 2007-04-27 | 2008-04-28 | Helmet moisture removal system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US91440007P | 2007-04-27 | 2007-04-27 | |
US12/109,830 US20120174293A1 (en) | 2007-04-27 | 2008-04-25 | Helmet moisture removal system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120174293A1 true US20120174293A1 (en) | 2012-07-12 |
Family
ID=40282053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/109,830 Abandoned US20120174293A1 (en) | 2007-04-27 | 2008-04-25 | Helmet moisture removal system |
Country Status (2)
Country | Link |
---|---|
US (1) | US20120174293A1 (en) |
WO (1) | WO2009014784A2 (en) |
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US20130086733A1 (en) * | 2011-10-10 | 2013-04-11 | Intellectual Property Holdings, Llc | Helmet impact liner system |
US20130276215A1 (en) * | 2012-04-19 | 2013-10-24 | Kenneth Stuart Eley, Sr. | Protection apparatus |
US8726424B2 (en) | 2010-06-03 | 2014-05-20 | Intellectual Property Holdings, Llc | Energy management structure |
US20150020292A1 (en) * | 2013-07-16 | 2015-01-22 | Juan I Diaz | Headgear having insulated ventilation channels and perspiration and moisture drainage channel |
US9320311B2 (en) | 2012-05-02 | 2016-04-26 | Intellectual Property Holdings, Llc | Helmet impact liner system |
US9440186B2 (en) | 2014-05-29 | 2016-09-13 | Stacy L. Wasson | Drying apparatus |
US9516910B2 (en) | 2011-07-01 | 2016-12-13 | Intellectual Property Holdings, Llc | Helmet impact liner system |
US20170007015A1 (en) * | 2015-07-10 | 2017-01-12 | Luft Industrie Inc. | Brush drying device |
WO2017164960A1 (en) | 2016-03-24 | 2017-09-28 | Bell Sports, Inc. | Sweat management pad for protective helmets |
US9894953B2 (en) | 2012-10-04 | 2018-02-20 | Intellectual Property Holdings, Llc | Helmet retention system |
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US8726424B2 (en) | 2010-06-03 | 2014-05-20 | Intellectual Property Holdings, Llc | Energy management structure |
US9516910B2 (en) | 2011-07-01 | 2016-12-13 | Intellectual Property Holdings, Llc | Helmet impact liner system |
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US9894953B2 (en) | 2012-10-04 | 2018-02-20 | Intellectual Property Holdings, Llc | Helmet retention system |
US10595578B2 (en) | 2012-10-04 | 2020-03-24 | Intellectual Property Holdings, Llc | Helmet retention system |
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EP3419456A4 (en) * | 2016-03-24 | 2020-03-18 | Bell Sports, Inc. | Sweat management pad for protective helmets |
Also Published As
Publication number | Publication date |
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WO2009014784A2 (en) | 2009-01-29 |
WO2009014784A3 (en) | 2009-04-16 |
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Legal Events
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Owner name: INTELLECTUAL PROPERTY HOLDINGS, LLC, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MILLIREN, CHARLES M.;SZALKOWSKI, RONALD;REEL/FRAME:021207/0858 Effective date: 20080707 |
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