Nape tensioner

Abstract

A safety helmet adjustment mechanism is disclosed. The safety helmet adjustment mechanism includes a safety helmet having an inner surface, a nape coupled to the inner surface of the safety helmet, and a nape tensioner disposed within the nape. The nape tensioner is coupled to the safety helmet with a cable extending from the nape tensioner. The nape tensioner includes a housing coupled to the nape, a cable reel rotatably coupled to the housing and engaging the cable, a dial coupled to the cable reel, and a spring disposed within the housing. In an expanded state, the spring prevents rotation of the cable reel relative to the housing. Rotation of the dial contracts the spring, thereby allowing rotation of the cable reel relative to the housing.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Patent Application No. 63 / 480,080, entitled "Nape Tensioner," filed January 16, 2023, and U.S. Provisional Patent Application No. 63 / 607,495, entitled "Nape Tensioner," filed December 7, 2023, which are incorporated by reference in their entireties.

[0002] Technical Field The present disclosure relates generally to helmet retention systems, and more particularly to nape tensioner adjustment mechanisms for helmet retention systems.

[0003] overview In certain embodiments, the safety helmet adjustment mechanism includes a safety helmet having an inner surface, a nape coupled to the inner surface of the safety helmet, and a nape tensioner disposed within the nape, the nape tensioner including a cable and coupled to the safety helmet by the cable. In certain embodiments, the cable extends from the nape tensioner. In certain embodiments, the nape tensioner includes a housing coupled to the nape, a cable reel rotatably coupled to the housing and engaging the cable, a dial coupled to the cable reel, and a spring disposed within the housing. In certain embodiments, the spring prevents rotation of the cable reel relative to the housing in an expanded state. In certain embodiments, rotation of the dial contracts the spring, thereby allowing rotation of the cable reel relative to the housing.

[0004] In certain embodiments, the nape tensioner further includes a first cable extending from a first side thereof and a second cable extending from a second side thereof. In certain embodiments, the first cable is coupled to a first side of an interior surface of the safety helmet, and the second cable is coupled to a second side thereof. In certain embodiments, the nape is coupled to an impact pad coupled to the interior surface of the safety helmet.

[0005] In certain embodiments, the nape tensioner further includes a rotation restrictor extending radially inward from the housing and capable of engaging a reel block of the cable reel. In certain embodiments, the rotation restrictor prevents the cable reel from rotating more than 360° relative to the housing. In certain embodiments, the cable couples to a cable retainer coupled to an inner surface of the safety helmet.

[0006] In certain embodiments, the safety helmet adjustment mechanism of claim 1 further comprises a screw. In certain embodiments, the housing, the cable reel, and the dial are coupled together by the screw. In certain embodiments, the nape tensioner is coupled to the nape by the screw.

[0007] In certain embodiments, the cable winds onto the spool of the cable reel as the dial is rotated. In certain embodiments, rotating the dial in a first direction tightens the fastener relative to the safety helmet. In certain embodiments, rotating the dial in a second direction loosens the fastener relative to the safety helmet.

[0008] In certain embodiments, the nape includes a nape tab extending therefrom, the nape tab being connectable to the impact pad. In certain embodiments, the impact pad includes a pad protrusion configured to be received by the nape tab opening of the nape tab to connect the nape to the impact pad. In certain embodiments, the impact pad lies flush against the impact pad when the pad protrusion is received by the nape tab opening.

[0009] In certain embodiments, the cable reel further comprises a reel extension configured to engage the spring upon rotation of the dial. In certain embodiments, the reel extension moves the spring from an expanded state to a contracted state upon rotation of the dial. In certain embodiments, the spring moves from a contracted state to an expanded state when the dial is at rest.

[0010] In certain embodiments, the safety helmet adjustment mechanism includes a safety helmet having an inner surface, a nape coupled to the inner surface of the safety helmet, and a nape tensioner disposed within the nape. In certain embodiments, the nape tensioner includes a first cable extending from a first side and a second cable extending from a second side, a housing coupled to the nape, a cable reel rotatably coupled to the housing and engaging the first cable and the second cable, a dial coupled to the cable reel, a spring disposed within the housing, and a rotation restrictor extending radially inward from the housing and capable of engaging a reel block of the cable reel.

[0011] In certain embodiments, the spring prevents rotation of the cable reel relative to the housing in the expanded state. In certain embodiments, rotation of the dial contracts the spring, thereby allowing rotation of the cable reel relative to the housing. In certain embodiments, a first cable and a second cable extend from the nape tensioner. In certain embodiments, the first cable is coupled to a first side of the interior surface of the safety helmet, and the second cable is coupled to a second side.

[0012] BRIEF DESCRIPTION OF THE DRAWINGS The following detailed description of embodiments of a nape tensioner will be better understood when read in conjunction with the accompanying drawings of illustrative embodiments, it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.

[0013] In the drawings: [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a front view of a nape tensioner attached to a helmet according to a first exemplary embodiment of the present invention. [Figure 2] FIG. 2 is a rear perspective view of a portion of the nape tensioner of FIG. 1. [Figure 3] FIG. 2 is a rear view of the nape tensioner of FIG. 1. [Figure 4] FIG. 2 is a front view of the nape tensioner of FIG. 1. [Figure 5] FIG. 2 is a perspective view of the inside of the nape tensioner of FIG. 1. [Figure 6] FIG. 2 is a perspective view of a cable reel of the nape tensioner of FIG. 1. [Figure 7] FIG. 6 is a side view of the cable reel of FIG. 5. [Figure 8] FIG. 2 is a front view of a helmet having the nape tensioner of FIG. 1. [Figure 9] FIG. 8 is an enlarged view of a portion of FIG. [Figure 10] FIG. 10 is a front view of a nape tensioner attached to a helmet according to a second exemplary embodiment of the present invention. [Figure 11] FIG. 11 is a rear view of the nape tensioner of FIG. [Figure 12] FIG. 11 is a rear view of the nape tensioner and cable retainer of FIG. [Figure 13] FIG. 11 is a perspective view of the inside of the nape tensioner of FIG. [Figure 14] FIG. 11 is a bottom view of the cable retainer that receives the cable of the nape tensioner of FIG. 10. [Figure 15] FIG. 11 is a front view of the cable of the nape tensioner of FIG. [Figure 16] FIG. 11 is an enlarged rear view of the Nape tensioner of FIG. 10 with the cable reel partially transparent. [Figure 17] FIG. 11 is a front view of the nape tensioner of FIG. 10 coupled to a shock pad. [Figure 18] FIG. 11 is a rear perspective view of the impact pad of FIG. 10. [Figure 19] FIG. 11 is a partial enlarged view of the cable retainer of FIG. [Figure 20] FIG. 2 is a close-up view of an electrical cable disposed in an electrical cable runner according to an exemplary embodiment of the present invention. [Figure 21] FIG. 11 is a perspective view from below of the nape tensioner of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Detailed Description Headgear retention and support systems are worn in a variety of environments and for a variety of purposes. Headgear supports allow protective equipment, such as face shields and helmets, to be properly worn and / or supported away from the head. A common element of a headgear support is a headband, which is typically made from a thin band of plastic material formed into a generally circular or semicircular shape with overlapping ends joined behind the head. Various systems have been devised to adjust the circumference of the headband to the extent necessary to accommodate the various head shapes and sizes of different wearers. One such system is an adjustable clamp that contacts the rear of the user's head and can be manipulated to move forward or backward relative to the user's head depending on the user's head size.

[0016] However, current adjustable headwear often rely on ratchet mechanisms and knobs that can generate noise, and the associated mechanical elements can significantly contribute to the overall weight on a user's head. The size and weight of ratchet mechanisms and knobs are disadvantageous in some applications. For example, to access the knobs within a protective helmet, the knobs must be positioned below the edge of the helmet shell. Alternatively, the helmet shell must be far enough away from the wearer's head to provide space for the knobs and allow the wearer's fingers to operate the knobs within the volume of the helmet shell.

[0017] In light of the above, there is a need for a safety helmet adjustment mechanism that can be operated by the wearer while on the wearer's head, and that is quieter, smaller, easier to operate, and lighter than conventional ratchet mechanisms.

[0018] Referring in detail to the drawings, wherein like reference numerals refer to like elements throughout, in FIGS. 1-9, a nape tensioner in accordance with a first exemplary embodiment of the present invention is illustrated and generally designated 10.

[0019] In some embodiments, the nape tensioner 10 is designed to provide an adjustment mechanism to ensure a snug and stable fit of the safety helmet 12. The safety helmet 12 may be a helmet shell used for various purposes in various environments, including, but not limited to, adventure activities, sports, industrial safety, and law enforcement or military purposes. In some embodiments, the safety helmet 12 may be any type of head protection helmet shell known in the art. For example, the safety helmet 12 may be included in a standard infantry ballistic helmet, an advanced combat helmet (ACH), an enhanced combat helmet (ECH), a modular integrated communications helmet (MICH), a tactical ballistic helmet (TBH), a lightweight marine helmet, a police general duty helmet, a personnel armor system for ground troops (PASGT), or a crew helmet such as an HGU-56 / P rotary wing helmet or an HGU 55 / P fixed wing helmet.

[0020] The safety helmet 12 may be a ballistic protective helmet made of a composite material having a helmet shell. The composite material may combine the advantages of multiple materials, such as a substrate (e.g., ultra-high molecular weight polyethylene (UHMWPE)), ultra-hard particles (e.g., ceramic), a non-elastomeric polymer binder, and / or polymer layers, to enhance the article's performance against threats such as high-velocity projectiles.

[0021] This design allows a single cable 14 to extend through the cable housing 36, thus allowing two ends (e.g., left and right) of the cable 14 to extend from the cable housing 36, and the two ends of the cable 14 can simultaneously tighten or loosen the nape 16 upon rotation of the dial 30. Upon rotation of the dial 30, the reel extension can contract the spring 54 by engaging the tab 58 of the spring 54, which allows the cable 14 to be shortened or lengthened by the cable reel 40 with little or no noise or friction. When the dial 30 is released, the spring 54 disposed within the nape tensioner 10 automatically expands into the sidewall of the clutch tube 50, thereby locking the nape tensioner 10 with the coil spring 54. The present disclosure has various use cases related to safety helmets 12, but is not limited to helmets.

[0022] 1 and 2, a safety helmet 12 can include a nape tensioner 10 attached to an interior surface of the safety helmet 12, the nape tensioner 10 being configured to adjust the fit of the safety helmet 12 by changing the length of a cable 14 extending from the nape tensioner 10. The nape tensioner 10 disclosed herein can provide the necessary fit adjustability with little or no noise during adjustment by preventing the nape 16 from extending beyond a set threshold.

[0023] In some embodiments, the nape tensioner 10 and nape 16 are pivotally coupled to the safety helmet 12. The nape tensioner 10 can be coupled to the nape 16 at a nape opening 18 extending through the nape 16. The nape opening 18 can be located in the center of the nape 16 near the bottom edge of the nape 16. The nape 16 can bend to fit the particular safety helmet 12 and the user's head / neck to which it is coupled. The nape 16 can be located at the rear of the safety helmet 12 and can extend past the bottom edge of the safety helmet 12 so that the nape 16 engages the user's neck when the user pivots their head upward relative to their body (e.g., when the user looks up while standing or forward while lying down). The nape 16 can interact with the back of the user's neck when the user pivots their head upward, potentially restricting head movement or causing irritation / pain in the neck. As shown in FIG. 2 , the lower edge of the nape 16 can be curved toward the nape opening 18 to reduce interference with the user's neck when the user pivots their head upward by reducing the distance the nape 16 extends beyond the edge of the safety helmet 12. In some embodiments, the lower edge of the nape 16 can include a curved lower portion 17 to prevent interference with the user's neck. The nape 16 can have a lip 20 extending around the nape opening 18 on the outer surface of the nape 16. The lip 20 can provide a housing for the nape tensioner 10 to protect the mechanism and prevent movement of the nape tensioner 10 relative to the nape 16. The lip 20 can include a lip opening 22 extending therethrough, which is configured to allow passage of the cable 14. The lip opening 22 can have a larger cross-section than the cable 14 to prevent interference with the nape tensioner 10.

[0024] In some embodiments, one or more helmet components or accessories may be attached to or routed through the nape 16. The nape 16 may further include a strap mount 24 extending therefrom, which includes one or more cable runners 26. The strap mount 24 may receive and route the webbing 29 or other portions of the webbing retention system (e.g., a chin strap). The strap mount 24 may be removably coupled to the nape 16. The strap mount 24 may be detachable from the nape 16 for repair or replacement. The cable runner 26 may guide the cable 14 toward the inner surface of the safety helmet 12. The cable runner 26 may guide the cable 14 toward an edge of the safety helmet 12. The cable runner 26 may be generally tubular. In some embodiments, the cable runner 26 may be an adjustable sleeve movable between an open position and a closed position. The cable runner 26 may receive the cable 14 in the open position and retain the cable 14 in the closed position. The cable runner 26 may be shaped and sized to create friction between the cable runner 26 and the cable 14. The cable runner 26 may guide the cable 14 between the cable runner 26 and the nape tensioner 10 to ensure that the cable 14 is kept away from and does not interfere with the webbing 29 or other accessories of the safety helmet 12. The tension generated by the cable runner 26 may be adjustable. For example, the circumference or diameter of the cable runner 26 may be adjusted by the user to increase or decrease the tension on the cable 14. The nape tensioner 10 may further include an electrical cable runner 27 (not shown). The electrical cable runner 27 may be used to guide data, power, or other electrical cables around the rear end of the safety helmet 12, away from the user's ears. The cable runner 26 and the electrical cable runner 27 may guide the respective cables inside or outside the safety helmet 12 to reach their desired destinations.

[0025] The cable 14 may be made of flexible steel and may be easily routed around the safety helmet 12 by one or more cable runners 26. The cable 14 may be made of a stainless steel material that provides corrosion resistance, heat resistance, adequate strength, and hygiene. The cable 14 may be a wire rope. The cable 14 may include multiple strands twisted together to form a generally helical configuration. In some embodiments, the cable 14 is a braided wire with multiple intertwined strands.

[0026] Cable 14 can have a diameter of about 0.05 inches. In some embodiments, cable 14 has a diameter of about 0.02 inches, about 0.025 inches, about 0.03 inches, about 0.035 inches, about 0.04 inches, about 0.045 inches, about 0.05 inches, about 0.055 inches, about 0.06 inches, about 0.065 inches, about 0.07 inches, about 0.075 inches, about 0.08 inches, about 0.085 inches, about 0.09 inches, or about 0.095 inches. In some embodiments, cable 14 has a diameter of at least 0.02 inches, at least 0.025 inches, at least 0.03 inches, at least 0.035 inches, at least 0.04 inches, at least 0.045 inches, at least 0.05 inches, at least 0.055 inches, at least 0.06 inches, at least 0.065 inches, at least 0.07 inches, at least 0.075 inches, at least 0.08 inches, at least 0.085 inches, at least 0.09 inches, or at least 0.095 inches. In some embodiments, cable 14 has a diameter of 0.2 inches to 0.95 inches, 0.25 inches to 0.9 inches, 0.3 inches to 0.85 inches, 0.35 inches to 0.8 inches, 0.4 inches to 0.75 inches, 0.45 inches to 0.7 inches, 0.5 inches to 0.65 inches, or 0.55 inches to 0.6 inches.

[0027] In some embodiments, the cable 14 may be coated to reduce friction in the nape tensioner 10 and reduce the occurrence of rust on the cable 14. The cable 14 can be coated with plastic, rubber, wax, or other acceptable coatings to achieve reduced friction and improved risk prevention. The coating can provide the cable 14 with better impact, abrasion, and fatigue resistance. The coating can increase the effective diameter of the cable 14 by approximately 1 / 64 inch. The cable runner 26 can be coupled to the inner surface of the safety helmet 12 and can be generally cylindrical and can couple to the helmet to guide the cable 14 to an attachment point or anchor 28. In one embodiment, the cable runner 26 can be coupled to an impact liner 60. Movement of the impact liner 60 relative to the safety helmet 12 can allow adjustment of the nape 16 relative to the safety helmet 12 and the user. This provides an opportunity to reduce hot spots and headband communication from the fit band by unobtrusively guiding the cable 14 between the shell of the safety helmet 12 and the impact liner 60. In some embodiments, the cable runners 26 can guide the cables 14 to anchors 28 located on the inner surface of the safety helmet 12. In some embodiments, the cable runners 26 can guide the cables 14 to anchors 28 located on the outer surface of the safety helmet 12.

[0028] The cable 14 may extend from the nape tensioner 10 to an anchor 28 located on the safety helmet 12. In one embodiment, the cable 14 extends from the nape tensioner 10 to an anchor 28 located on a component bonded or otherwise coupled to the interior surface of the safety helmet 12, as shown in FIG. 14 and described in further detail below. In one embodiment, the cable 14 extends from the nape tensioner 10 to an anchor 28 located on a molded edge band bonded or otherwise coupled to the safety helmet 12. The edge band may be molded from plastic. In one embodiment, the cable 14 extends from the nape tensioner 10 to an anchor 28 located on an impact liner 60.

[0029] Organizing and managing the position of the cables 14 within the safety helmet 12 can reduce snagging and prevent accidental tightening and loosening of the helmet on the user's head. Multiple cable runners 26 can be positioned close to the inner surface of the safety helmet 12 to guide the cables 14 to the anchors 28 without interfering with any of the other components of the safety helmet 12. The anchors 28 can be located on the inner or outer surface of the safety helmet 12, closer to the front of the helmet than the nape tensioners 10. Two anchors 28 can be located at the same position on both sides of the safety helmet 12 (e.g., left and right) so that the napes 16 can pivot relative to the safety helmet 12 when adjusted by the nape tensioners 10. In one embodiment, there is only one anchor 28. The anchor 28 can be an existing fastener extending through the safety helmet 12. In one embodiment, for a boltless helmet, the anchor 28 can be a shim bonded to the safety helmet 12 with an adhesive. In one embodiment, the anchor 28 may be a cable 14 disposed within the edgeband of the safety helmet 12 .

[0030] A user can adjust the fit of the helmet by interacting with the nape tensioner 10. Referring to FIG. 2, the exterior of the nape 16 may include a dial 30 of the nape tensioner 10 rotatably coupled to the nape 16. The dial 30 can be rotated by a user to adjust the nape 16 to increase or decrease the length of the cable between the nape tensioner 10 and the anchor 28. The dial 30 may be generally circular and have multiple dial protrusions 32 around its periphery. The dial protrusions 32 can provide friction for the user's fingers to enable a secure grip and rotation of the dial 30. The dial 30 may include indicia 34 in its center. The indicia 34 may be a logo, a shape, a word, or any combination thereof.

[0031] 3, the nape tensioner 10 can be coupled to the nape 16 at the nape opening 18. The cable housing 36 of the nape tensioner 10 can include at least one housing protrusion 38 extending therefrom, the housing protrusion 38 configured to align with the shape of the nape opening 18 to prevent rotation of the cable housing 36 relative to the nape 16.

[0032] The cable housing 36 may enclose a cable reel 40 disposed therein. The cable reel 40 may be sized and shaped to fit within the cable housing 36. The cable reel 40 may include a reel opening 42 (shown in FIG. 7 ) extending therethrough to allow the cable 14 to pass through the cable reel 40. However, to ensure that the cable 14 is evenly adjusted on both sides of the nape 16, the cable reel 40 may include a central slot 44 extending through the outer surface of the cable reel 40. A reel protrusion 46 may extend from the outer surface of the cable reel 40. A central portion of the cable 14 may be configured to pass through the central slot 44 and around the reel protrusion 46, which promotes even winding of the cable 14 around the cable reel 40 during rotation. The cable reel 40 may include a spool 48 configured to collect and store the cable 14 during rotation of the nape tensioner 10. The spool 48 may be a generally concave portion of the cable reel 40 having a smaller diameter than the surrounding portion of the cable reel 40. The spool 48 may have a generally rounded shape to urge the cable 14 toward its center.

[0033] 5, the nape tensioner 10 may further include a clutch tube 50 disposed within the cable housing 36. The clutch tube 50 may be generally cylindrical in shape and sized to fit between the cable housing 36 and the cable reel 40. Additionally, the clutch tube 50 may be shaped and sized to fit over the cable reel 40 at a rim 52.

[0034] Silent adjustment of the nape tensioner 10 can improve user safety in the field. The nape tensioner 10 can further include a spring 54 disposed between the clutch tube 50 and the reel extension 56. The spring 54 can have a larger diameter than the clutch tube 50 in an expanded state. However, when rotated, the spring 54 can have a smaller diameter than the clutch tube 50 in a contracted state. The spring 54 can include one or more tabs 58 protruding toward the center of the nape tensioner 10. The spring 54 can include one tab 58 located at the beginning of the spring 54 and one tab 58 located at the end of the spring 54. Upon rotation of the dial 30, the reel extension 56 can engage the tabs 58 of the spring 54, thereby reducing the diameter of the spring 54 and allowing rotation of the cable reel 40 relative to the cable housing 36. When the dial 30 is not rotating, the reel extension 56 does not engage the tab 58 of the spring 54, allowing the circumference of the spring 54 to expand, thus locking the nape tensioner 10 and cable 14 by preventing further rotation of the cable reel 40 relative to the cable housing 36 due to friction between the spring 54 and the clutch tube 50. This interaction between the spring 54 and the clutch tube 50 can result in little or no noise during use.

[0035] 4-9, the nape tensioner 10 can include an internally disposed screw 39. The screw 39 can be shaped and sized to extend through the nape tensioner 10. The screw 39 can secure the nape tensioner 10 to the nape 16. The screw 39 can engage a receiving portion (not shown) of the dial 30 to press the cable reel 40 and the dial 30 toward each other. The nape opening 18 can be received between components of the nape tensioner 10 to prevent movement of the nape tensioner 10 relative to the nape 16.

[0036] The nape 16 may be coupled to the inner surface of the safety helmet 12. Referring to Figures 8 and 9, the nape 16 may extend through an impact liner 60 of the safety helmet 12. The nape 16 may be coupled to the safety helmet 12 using fasteners or adhesive. In one embodiment, the nape 16 is coupled to the impact liner 60 of the safety helmet 12.

[0037] 10-21 , there is shown a second exemplary embodiment of a nape 16 and a nape tensioner 10, generally designated 116 and 110, respectively. The nape 116 and nape tensioner 110 are similar to the first embodiment of the nape 16 and nape tensioner 10, except that, for example, the nape tensioner 110 is configured to secure multiple cables 114 (e.g., cables 114a and 114b) thereto, as described in further detail below. The nape tensioner 110 can be configured to accept two cables 114. In some embodiments, the nape tensioner 110 can be configured to accept two cables 114, three cables 114, four cables 114, five cables 114, or six cables 114 in the crimp receiver 157, as described in further detail below.

[0038] 10 , 12 , 17 , and 21 , the nape 116 can be coupled to the impact pad 160 to couple a portion of the nape 116 to the safety helmet 12. In some embodiments, the nape 116 is detachably coupled to the impact pad 160. A nape tab 164 extending from the nape 116 can extend through the impact pad 160 and engage with a pad protrusion 168 of the impact pad 160 to couple the nape tab 164 to the impact pad 160. The nape tab 164 can be disposed through the impact pad 160 from the inside and extend through to the outside. The nape 116 can be shaped to flatly engage with the inside of the impact pad 160, while the nape tab 164 can be flatly engaged with the outside of the impact pad 160. 17 and 21, the inside of the impact pad can have a recess sized and shaped to receive the nape 116 and ensure that the head-facing surface is flush. A comfort pad or other pad may be removably coupled to the flush surface of the nape 116 and impact pad 160. Referring to FIGS. 17 and 21, the flush surfaces of the nape 116 and impact pad 160 can include an adhesive patch 172 coupled thereto. The adhesive patch 172 can be configured to couple the comfort pad or other pad flush. The adhesive patch 172 can include a hook-and-loop configuration or other acceptable form of removable coupling.

[0039] 12 and 18 , the impact pad 160 can include a pad protrusion 168 extending therefrom. The pad protrusion 168 can be generally rectangular in shape and can be raised from a pad recess 175 that extends around the pad protrusion 168. The pad recess 175 can be generally rectangular in shape. The pad recess 175 can be shaped and sized to receive the snap tab 164. In some embodiments, the pad protrusion 168 is rounded in shape. The pad protrusion 168 can be received in a snap tab opening 170 that extends through the snap tab 164. The pad protrusion 168 and the snap tab opening 170 can be sized and shaped to engage with each other. In some embodiments, the snap 116 is coupled to the impact pad 160 before the impact pad 160 is coupled to the safety helmet 12. The impact pad 160 can include a lower extension 177 extending from its lower end. As shown in Figure 18, the impact pad 160 may include two lower extensions 177. The space between the two lower extensions 177 may be generally triangular in shape. The lower extensions 177 may have a recess (Figures 10 and 12) shaped and sized to receive at least a portion of the nape 116. The lower extensions may prevent the nape 116 from moving backward relative to the user's head, but the nape 116 may be able to move freely toward the user's head.

[0040] Referring to FIG. 13, the nape tensioner 110 may include a cable housing 136 that surrounds a cable reel 140 similar to the previously described components. However, the cable reel 140 may include a reel extension 156 that includes one or more crimp receivers 157. The crimp receiver 157 may be an opening that extends through the cable reel 140. The crimp receiver 157 may be shaped and sized to receive the first crimp 115a of the cable 114. The crimp receiver 157 may couple the first end of the cable 114 to the cable reel 140. Referring to FIG. 13, the cable reel 140 may include multiple crimp receivers 157. In some embodiments, the cable reel 140 includes two crimp receivers 157, three crimp receivers 157, four crimp receivers 157, five crimp receivers 157, or six crimp receivers 157. The first ends of the cables (e.g., 114a and 114b) coupled to the cable reel 140 ensure equal adjustment of all cables 114 coupled thereto. Rotation of the cable reel 140 allows the cables 114 to be wound around a spool 148 (not shown) of the cable reel 140, as described above in connection with spool 48.

[0041] 11 and 12 , the nape 116 may further include a strap mount 124 extending therefrom. As shown in FIG. 11 , the strap mount 124 may accept one or more webbings 129 (e.g., straps, cables, tethers, or other materials) as part of a chin strap. The area of ​​the nape 116 below the strap mount 124 may include a hole 125 extending therethrough. The strap mount 124 may be a bridge that extends over the hole 125 and may be coupled to the nape 116 on both sides of the hole 125. The hole 125 may allow ventilation to the user's neck during use. The strap mount 124 may be spaced apart from the plane of the hole 125. In one embodiment, offsetting the strap mount 124 from the hole 125 facilitates accommodation of the webbing 129 and / or the ring 131. The strap mount 124 may have a non-uniform width along its length to accommodate the webbing 129. For example, a first end of the strap mount 124 may be wider than a second end. Having one end of the strap mount 124 wider than the other may facilitate engagement between the webbing 129 and the strap mount 124 and prevent bunching of the webbing 129 disposed on the strap mount 124. The uneven width of the strap mount 124 may guide the webbing 129 toward its destination, such as the chin of a chin strap. In some embodiments, the strap mount 124 may be sized to allow one or more webbings 129 to thread therethrough.

[0042] As shown in FIG. 11 , the webbing 129 can include a ring 131 connecting one or more portions of the webbing 129. The ring 131 in FIG. 11 may not be properly illustrated. The location of the ring 131 may be accurate, but the structure may not be. The ring 131 can adjust the length of the webbing 129. The strap mount 124 and the hole 125 can be shaped and sized to allow the ring 131 to pass through. In one embodiment, allowing the ring 131 to pass through the strap mount 124 can allow the ring 131 and / or the webbing 129 to be detachable from the fastener 116. In one embodiment, allowing the retention strap and webbing 129 to be detachable from the fastener 116 allows for easier removal of the components. For example, the chin strap can be replaced without removing the fastener 116 from the safety helmet 12. The strap mount 124 can receive and guide a portion of the webbing retention system (e.g., the chin strap). The strap mount 124 may be detachably coupled to the fastener 116.

[0043] An electrical cable runner 127, as shown in FIG. 20 , may be used to guide data, power, or other electrical cables 179 around the rear end of the safety helmet 12, away from the user's ears. The electrical cable runner 127 may be coupled to the cable retainer 163 (described in further detail below) at or near its lower edge. The electrical cable runner 127 may be a generally cylindrical member along its length, with a hole defined along its length to allow the electrical cable 179 to be threaded through it. The electrical cable runner 127 may have a diameter smaller than the diameter of the electrical cable 179 and may bend outward as the electrical cable 179 is threaded through it. The electrical cable runner 127 may be frictionally contained within the electrical cable runner 127. The electrical cable runner 127 may be coupled to the cable retainer 163 at a cable latch 133 of the cable retainer 163. The cable latch 133 may be an elongated member coupled to and spaced apart from the cable retainer 163. The cable latch 133 may be shaped and sized to receive the electrical cable runner 127 therethrough to secure the electrical cable 179 to the cable retainer 163.

[0044] The strap mount 124 may include a cable runner 126 adjacent its lower end. The strap mount 124 and the cable runner 126 may be separate components. In some embodiments, the strap mount 124 and the cable runner 126 are integrally formed. The cable runner 126 and the electrical cable runner 127 may guide the respective cables to the interior or exterior of the safety helmet 12 to reach their desired destination.

[0045] One or more cable runners 126 may be included between the nape tensioner 110 and the anchor 28 to manage the position and movement of the cable 114. The one or more cable runners 126 may be coupled to the safety helmet 12, the impact pad 160, or another component coupled to the safety helmet 12. Referring to FIG. 20 , the electrical cable runner 127 may be an adjustable sleeve movable between an open position and a closed position. In some embodiments, the electrical cable runner 127 may be a snap fastener, a button, a magnetic fastener, a buckle, a strap, a hook-and-eye fastener, or other acceptable fastener movable between an open position and a closed position to receive and retain the electrical cable 179. The electrical cable runner 127 can receive the electrical cable 179 in the open position and retain the electrical cable 179 in the closed position. The electrical cable runner 127 can be repeatedly opened and closed, unlike, for example, the use of a zip tie to secure the electrical cable 179. In some embodiments, the cable runner 126 is generally tubular. The cable runner 126 may be shaped and sized to create friction between the cable runner 126 and the cable 114. The cable runner 126 on the strap mount 124 adjacent to the nape tensioner 110 may guide the cable 114 between the cable runner 126 and the nape tensioner 110 to ensure that the cable 114 is kept away from and does not interfere with the webbing 129 or other accessories of the safety helmet 12. The tension generated by the cable runner 126 may be adjustable. For example, the circumference or diameter of the cable runner 126 may be adjusted by a user to increase or decrease the tension on the cable 114.

[0046] The cable 114 must be coupled to the nape tensioner 110 at a location forward of the nape 116 relative to the safety helmet 12 so that the nape 116 can pivot relative to the safety helmet 12 or the impact pad 160. Referring to FIGS. 14 and 21, the cable 114 can be secured to an anchor 28 located on a cable retainer 163 bonded or otherwise coupled to the inner surface of the safety helmet 12. The anchor can be a hook or protrusion shaped to prevent the cable 114 from disengaging therefrom. The cable retainer 163 can extend around a portion of the inner surface of the safety helmet 12. The cable retainer 163 can include a fastener receiver 165 extending therethrough. The fastener receiver 165 can be shaped and sized to receive a fastener 167 extending from the inner surface of the safety helmet 12. Referring to FIG. 14, the fastener receiver 165 can include multiple fastener receivers 165 to accommodate helmets of various sizes. For example, as shown in FIG. 19, the fastener receiver 165 located closest to the anchor 28 can accommodate a larger safety helmet 12 (e.g., XXL) than the fastener receiver 165 located farthest from the anchor 28 (e.g., M).

[0047] 14 and 19, indicia 173 indicating the helmet size corresponding to each fastener receiver 165 may be included on the cable retainer 163 proximate each of the one or more fastener receivers 165. Including multiple fastener receivers 165 can allow the cable retainer 163 to accommodate more than one helmet size. In some embodiments, the cable retainer 163 can accommodate helmet sizes ranging from small (S) to extra-large (XXL) (e.g., one size fits all). Referring to FIG. 19, the cable retainer 163 can include a cable lead 169 positioned proximate the anchor 28. The cable lead 169 may extend from the cable retainer 163 and may be shaped and sized to receive the cable 114. The cable lead 169 can act to prevent the cable 114 from moving near the anchor 28 during use to reduce the occurrence of the cable 114 becoming dislodged from the anchor 28. The cable lead 169 may have a generally cylindrical shape and have a hole along its length to allow the cable 114 to pass through. The cable retainer 163 may include one or more cable runners 126 or electrical cable runners 127 coupled to the cable retainer 163 to guide the cable away from the user's ears and head.

[0048] The cable 114 can be secured by at least one crimp 115, as shown in FIG. 15 . In some embodiments, the cable 114 is secured by two crimps (e.g., crimp 115a and crimp 115b). The first crimp 115a can be coupled to a first end of the cable 114. The first crimp 115a can have a larger cross-section than the cable 114 to create a larger engagement surface for engagement of the nape tensioner 110. As described in more detail below, the first crimp 115a can be secured to the nape tensioner 110. The second crimp 115b can be coupled to a second end of the cable 114. The second crimp 115b can form a loop 117 of the cable 114 extending therefrom. The loop 117 can be shaped and sized to be received in an anchor 28 located on or near the safety helmet 12.

[0049] To avoid confusion regarding the direction a user should rotate the dial 130 to tighten or loosen the snap 116, each direction can perform a single adjustment function. Referring to FIG. 16 , the cable housing 136 can include a rotation restrictor 161. The rotation restrictor 161 can be a protrusion extending radially inward from the cable housing 136. In some embodiments, multiple rotation restrictors 161 can be included in the cable housing 136. The rotation restrictor 161 can engage a reel block 162 of the cable reel 140 to prevent the cable reel 140 from rotating relative to the cable housing 136 beyond a predetermined rotation threshold. In some embodiments, the predetermined rotation threshold is less than 360°. In some embodiments, the predetermined rotation threshold is less than 320°, less than 300°, less than 280°, less than 260°, less than 240°, less than 220°, less than 200°, less than 180°, less than 160°, less than 140°, less than 120°, or less than 100°. The rotation restrictor 161 can prevent the nape tensioner 110 from being rotated in a first direction to a fully slack state and continuing to rotate in the first direction to tighten the nape 116. The rotation restrictor 161 can ensure that rotation in a first direction tightens the cable 114 and rotation in a second direction loosens the cable 114.

[0050] The terms "about" or "approximately" are used herein to provide context for the exact number that follows the term, as well as for numbers that are near or approximately the number that follows the term. In determining whether a number is near or approximately a specifically stated number, the near or approximately unstated number may be a number that, in the context in which it is presented, provides a substantial equivalent to the specifically stated number. All numerical values ​​and ranges disclosed herein are to be understood as approximate values ​​and ranges, regardless of whether "about" is used therewith. It is also to be understood that the term "about," when used herein in connection with a number, refers to a value that may be ±0.01% (inclusive), ±0.1% (inclusive), ±0.5% (inclusive), ±1% (inclusive), ±2% (inclusive), ±3% (inclusive), ±5% (inclusive), ±10% (inclusive), or ±15% (inclusive) of that number. Additionally, it is to be understood that when a numerical range is disclosed herein, any number falling within that range is also specifically disclosed.

[0051] Those skilled in the art will appreciate that changes could be made to the exemplary embodiments shown and described above without departing from the broad inventive concept thereof. It is to be understood that the embodiments and claims disclosed herein are not limited in their application to the details of construction and arrangement of components set forth in the description and illustrated in the drawings. Rather, the description and drawings provide merely examples of contemplated embodiments. The embodiments and claims disclosed herein are further capable of other embodiments and of being practiced and carried out in various ways.

[0052] Certain features of exemplary embodiments may or may not be part of the claimed invention, and various features of the disclosed embodiments may be combined. Unless specifically stated herein, the terms "a," "an," and "the" should not be understood to be limited to one element, but instead to mean "at least one." Finally, unless specifically stated herein, the disclosed or claimed methods should not be limited to performing their steps in the order described; one of ordinary skill in the art will readily understand that the steps may be performed in any actual order.

Claims

1. a safety helmet having an inner surface; a nape coupled to the inner surface of the safety helmet; a nape tensioner disposed within the nape and having a cable, the nape tensioner being connected to the safety helmet by the cable; Equipped with The cable extends from the nape tensioner, The nape tensioner is a housing coupled to the nape; a cable reel rotatably coupled to the housing and adapted to engage the cable; a dial coupled to the cable reel; a spring disposed within the housing; Equipped with the spring prevents rotation of the cable reel relative to the housing in an expanded state; A safety helmet adjustment mechanism wherein rotation of the dial compresses the spring, thereby allowing rotation of the cable reel relative to the housing.

2. 2. The safety helmet adjustment mechanism of claim 1, wherein the nape tensioner further comprises a first cable extending from a first side of the nape tensioner and a second cable extending from a second side of the nape tensioner.

3. 3. The safety helmet adjustment mechanism of claim 2, wherein the first cable is coupled to a first side of the interior surface of the safety helmet and the second cable is coupled to a second side.

4. 2. The safety helmet adjustment mechanism of claim 1, wherein the snap is coupled to an impact pad coupled to the interior surface of the safety helmet.

5. 2. The safety helmet adjustment mechanism of claim 1, wherein the nape tensioner further comprises a rotational restrictor extending radially inward from the housing and engageable with a reel block of the cable reel.

6. 6. The safety helmet adjustment mechanism of claim 5, wherein said rotation restrictor prevents said cable reel from rotating more than 360 degrees relative to said housing.

7. 2. The safety helmet adjustment mechanism of claim 1, wherein the cable is coupled to a cable retainer coupled to the interior surface of the safety helmet.

8. Further comprising a screw; the housing, the cable reel, and the dial are coupled together by the screw; 2. The safety helmet adjustment mechanism of claim 1, wherein the nape tensioner is coupled to the nape by the screw.

9. 2. The safety helmet adjustment mechanism of claim 1, wherein the cable winds around a spool of the cable reel upon rotation of the dial.

10. Rotating the dial in a first direction tightens the fastener to the safety helmet; 10. The safety helmet adjustment mechanism of claim 9, wherein rotation of the dial in a second direction loosens the fastener relative to the safety helmet.

11. 2. The safety helmet adjustment mechanism of claim 1, wherein the nape includes a nape tab extending therefrom, the nape tab being capable of being coupled to an impact pad.

12. 12. The safety helmet adjustment mechanism of claim 11, wherein the impact pad comprises a pad protrusion configured to be received by a nape tab opening of the nape tab to couple the nape to the impact pad.

13. 13. The safety helmet adjustment mechanism of claim 12, wherein the impact pad lies flush against the impact pad when the pad projection is received by the snap tab opening.

14. The safety helmet adjustment mechanism of claim 1 , wherein the cable reel further comprises a reel extension configured to engage the spring upon rotation of the dial.

15. 15. The safety helmet adjustment mechanism of claim 14, wherein said reel extension moves said spring from said expanded state to said contracted state upon rotation of said dial.

16. 16. The safety helmet adjustment mechanism of claim 15, wherein said spring moves from said contracted state to said expanded state when said dial is at rest.

17. a safety helmet having an inner surface; a nape coupled to the inner surface of the safety helmet; a nape tensioner disposed within the nape; Equipped with The nape tensioner is a first cable extending from the first side and a second cable extending from the second side; a housing coupled to the nape; a cable reel rotatably coupled to the housing and engaging the first cable and the second cable; a dial coupled to the cable reel; a spring disposed within the housing; a rotary restrictor extending radially inward from the housing and engageable with a reel block of the cable reel; Equipped with the spring prevents rotation of the cable reel relative to the housing in an expanded state; rotation of the dial compresses the spring, thereby allowing rotation of the cable reel relative to the housing; the first cable and the second cable extend from the nape tensioner; A safety helmet adjustment mechanism, wherein the first cable is coupled to a first side of the interior surface of the safety helmet and the second cable is coupled to a second side.

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