Chin strap

A chin strap includes a protective shell including a curved and convex contour extending between lengthwise ends of the shell, the shell further including a first curved edge extending between the lengthwise ends of the shell and a second curved edge extending between the lengthwise ends of the shell. A cross-section along a lengthwise central axis of the chin strap defines a first shell portion including the first curved edge and a second shell portion including the second curved edge. The first shell portion of the cross-section defines a first surface area between the lengthwise central axis and the first curved edge, and the second shell portion of the cross-section defines a second surface area between the lengthwise central axis and the second curved edge, where the first surface area is less than the second surface area.

FIELD

The present invention relates to a chin strap used in sports and other physical activities.

BACKGROUND

Helmets are typically used in sports (such as football, lacrosse, hockey, etc.) or other physical types of activities (e.g., police riot gear) for protecting a user's head during such activities. A chin strap, connected to the helmet, is also provided to assist in securing a helmet to a user's head and/or protect the user's chin and jaw from abrasive or other contacting forces associated with the physical activity in which the user is engaged. The chin strap typically includes one or more flexible straps tethered to a central cup. The distal ends of the flexible straps include fasteners that secure the chin strap to the helmet such that the cup is generally aligned with the users chin. The flexible straps can be adjustable in length to facilitate adjustment of a distance from which the chin strap extends from the helmet to provide a proper chin alignment, as well as a comforting fit for the user wearing the helmet.

The cup of such conventional chin straps includes a symmetrical cup, i.e., a cup defining equal surface areas on opposite sides of the cup's central longitudinal or lengthwise axis. This conventional cup is prone to slippage caused by contact during game play. That is, when a force is applied to the helmet (e.g., via helmet-to-helmet contact), the helmet will shift/rotate on the wearer's head. In addition, while the adjustability feature for the straps of the chin strap is desirable to facilitate a precise comfort fit for different users of a helmet (e.g., users having different facial contours and configurations), this can also result in a user adjusting the strap lengths so that the chin strap is loosely fit over the user's chin, resulting in the potential for the chin strap to slip from and/or provide less protection to the user's chin when engaging in the physical activity.

Accordingly, it would be desirable to provide a chin strap having a more secure fit, and that is effective to retain the position (e.g., rotational position) of the helmet on the wearer's head during game play.

SUMMARY

In an embodiment, a chin strap or guard comprises a protective shell and a cushion member. The shell defines an outer surface that faces away from a user's chin during use of the chin strap, the outer surface including a curved and convex contour extending between lengthwise ends of the shell. The shell further includes a first curved edge extending between the lengthwise ends of the shell and a second curved edge extending between the lengthwise ends of the shell. The cushion member is secured to the inner surface of the shell opposite the shell outer surface. The cushion member includes an interior surface having a curved and concave contour that extends between lengthwise ends of the cushion member such that the cushion member engages with the user's chin during use of the chin strap.

A cross-section along a lengthwise central axis of the chin strap defines first and second outer surface shell portions that are asymmetrical such that the first outer surface shell portion of the cross-section including the first curved edge defines a first area that is less than a second area defined by the second outer surface shell portion of the cross-section including the second curved edge.

During use, the chin strap is oriented in relation to a user's chin such that the second curved edge and greater surface area defined by the second outer surface shell portion are located beneath the user's chin.

In another embodiment, a chin strap comprises a protective shell including a curved and convex contour extending between lengthwise ends of the shell, the shell further including a first curved edge extending between the lengthwise ends of the shell and a second curved edge extending between the lengthwise ends of the shell. A cross-section along a lengthwise central axis of the chin strap defines a first shell portion including the first curved edge and a second shell portion including the second curved edge. The first shell portion of the cross-section defines a first surface area between the lengthwise central axis and the first curved edge, and the second shell portion of the cross-section defines a second surface area between the lengthwise central axis and the second curved edge. The first surface area is less than the second surface area.

In a further embodiment, a chin strap comprises a protective shell including a curved and convex contour extending between lengthwise ends of the shell, the shell further including a first curved edge extending between the lengthwise ends of the shell and a second curved edge extending between the lengthwise ends of the shell. At least a portion of the second curved edge of the shell extends further in distance from a leading forward edge of the shell than at least a portion of the first curved edge of the shell.

The above and still further features and advantages of embodiments of the present invention will become apparent upon consideration of the following detailed description thereof, particularly when taken in conjunction with the accompanying drawings wherein like reference numerals in the various figures are utilized to designate like components.

DETAILED DESCRIPTION

As described herein, a chin strap for use with helmets has a configuration that is asymmetrical in relation to a lengthwise dimension of the chin strap, where a second or lower portion of the chin strap includes more structural material and has a larger outer surface area in relation to a first or upper portion of the chin strap. This configuration of the chin strap provides for enhanced protection of the user's chin, with the lower portion of the chin strap extending to a greater extent beneath the user's chin in relation to conventional or other types of chin straps and further preventing, inhibiting or limiting movement of the chin strap from disengaging with the user's chin during use.

Referring toFIGS. 1-6, the chin strap2may include a cup3and connector members5A,5B coupled thereto. The cup3of the chin strap2is configured to receive and/or cradle the chin of the wearer. In the illustrated embodiment, the cup3includes an outer protective layer and an inner cushion layer. Specifically, the cup3includes a generally rigid (e.g., hard), outer protective shell10that defines an outer surface of the chin strap cup3and an inner cushion member30that is secured to an interior surface of the shell10and faces toward the user to engage with a chin of the user wearing a helmet to which the chin strap is attached.

The shell10is made of a suitably hard yet lightweight material (e.g., nylon) to absorb and sustain impact forces during use without significant wear and tear to the shell10. The inner cushion member30, being configured to directly engage with the user's chin, is made of a softer and more flexible material in relation to the shell10so as to provide a cushioning effect as well as further absorption of any impact forces applied to the chin strap2when worn by the user. By way of example, the inner cushion member30may be formed of a compressible material such as ethylene vinyl acetate foam, polyurethane foam, etc.

The protective shell10has a curved and generally cross-sectional convex contour that extends in a lengthwise direction of the shell10such that the shell generally corresponds with the contour of a user's chin. The shell10defines a first lengthwise end11aand a second lengthwise end11b(seeFIG. 2). The cushion member30also has a curved and generally cross-sectional convex contour that extends in a lengthwise direction of the cushion member30, where the cushion member30is further suitably dimensioned to be aligned with and fit (e.g., press fit) within and against the interior surface of the shell10. While the cushion member30fits within and covers substantially the entire interior surface of the shell10(and can further include a lip portion extending slightly beyond the entire interior surface of the shell), it is noted that other embodiments are also possible in which the cushion member covers only a portion of the interior surface of the shell or where the cushion member completely covers the interior surface of and further extends to a portion of the outer surface of the shell.

A cut-out section or window12is provided at each lengthwise end11a,11bof the shell10, where each cut-out section12facilitates connection of the shell with a corresponding connection member5A,5B. Specifically, each connection member5A,5B includes an elongated strap6such that the strap passes through the cut-out section. As described herein (in relation to the embodiment ofFIG. 7), a strap6is configured for connection with a helmet in any conventional or other suitable manner such that the chin strap2extends a suitable distance from the helmet to receive and engage with a user's chin when the user is wearing the helmet. The straps6can be constructed of any suitably durable and lightweight material (e.g., leather, polyvinyl chloride, etc.) having sufficient flexibility to bend or twist the straps in any suitable manner so as to facilitate a suitable connection with the helmet.

Each strap6can connect with the shell10in any conventional or other suitable manner, e.g., by looping a portion of the strap6through a corresponding cut-out section12and then securing two ends of the strap6to the helmet in a conventional manner. As shown inFIG. 1B, each strap6can include a strap splitter structure7, located on the strap6proximate to the cut-out section12of the shell10so as to engage and align portions of the strap6such that the strap portions extend in diverging directions from each other to space the two strap ends at a suitable distance from each other for engaging with the helmet. In the embodiment depicted in the figures, each strap6includes two strap ends, each of which includes a metal snap connector8configured to connect to a corresponding metal button disposed at a suitable location on a helmet so as to releasably attach the chin strap2to the helmet via the straps at the metal button/snap connection. However, it is noted that any other suitable fastener connection can also be utilized (e.g., hook-and-loop fasteners, strap ties, etc.). Since each strap6includes two strap ends with snap connectors8, the chin strap2connects with the helmet at four connection points (two connection points per strap6). However, it is noted that the chin strap2can be configured with any number of straps disposed at each lengthwise end11a,11bof the shell10and that connect to a helmet at any selected number of connection points (e.g., two or more connection points) depending upon a particular type of helmet and/or type of application in which the chin strap is used.

The straps6can further include any suitable structure that facilitates a lengthwise adjustment of each strap so as to selectively adjust a distance of the chin strap2from the helmet. For example, each snap connector8can further include a loop adjuster or buckle9that selectively and releasably locks a loop portion of the strap6in relation to the buckle9, which in turn selectively adjusts a length dimension between the snap connection of the helmet and a lengthwise end of the shell10.

The outer shell10and underlying cushion member30can include corresponding cut-out sections that define openings or grooves16extending through the chin strap2(as shown inFIGS. 1A and 2). Any suitable number (e.g., one or more), shapes and/or patterns of grooves16can be configured in the chin strap2to provide a decorative pattern (e.g., arrow shaped grooves as shown inFIGS. 1A and 2) as well as suitable ventilation and cooling as desired (e.g., suitable airflow through the chin strap to provide a cooling effect to the chin during use).

As can be seen inFIGS. 4-6, the shell10includes a first or upper edge20that is curved and generally concave as it extends the lengthwise dimension (i.e., in a direction along line4depicted inFIG. 2) of the shell. The shell10further includes a second or lower edge22that is curved and generally convex at a central location25of the lower edge22as the lower edge extends the lengthwise dimension of the shell. At either side of the lower edge22between the central location25and the lengthwise ends11a,11bof the shell10, the lower edge22has a generally concave profile at locations23. Thus, extending along the lower edge22of the shell10from one lengthwise end11ato the other lengthwise end11b(and vice versa), the profile of the lower edge22transitions from a concave profile (at a first location23), to a convex profile (at central location25), and again to a concave profile (at a second location23).

When taking a cross-section of the shell10on a central axis along its lengthwise dimension, in particular along dashed line4shown inFIG. 2, a first or upper shell portion24(i.e., the portion of the shell10above line4inFIG. 2) defines an outer surface area of the shell10that is smaller or less than an outer surface area of the shell10defined by a second or lower shell portion26(i.e., the portion of the shell10below line4inFIG. 2). Thus, the chin strap2is asymmetrical about its lengthwise central axis (defined by dashed line4), where the lower shell portion26includes an extended portion of material (the extended portion of material including the central location25of the lower edge22including the convex curvature) and has a greater surface area in relation to the upper shell portion24.

Stated another way, at least a portion of the shell lower edge22extends further from the leading forward edge of the cup3than at least a portion of the shell upper edge20. That is, referring toFIG. 6, the length measurement from the leading forward edge of the cup3(which is defined as tangent point61, which lies along dashed tangent line60and is the furthest location or furthest distance along the outer convex curvature of the shell10from each of its lengthwise ends11a,11b) to the longitudinal or lengthwise center point of the shell upper edge20, indicated by distance L1, is less than the length measurement from the leading forward cup edge (i.e., defined as tangent point61located on line60) to the longitudinal or lengthwise center point of the shell lower edge22, indicated by distance L2. Accordingly, when extending an imaginary plane in a direction between the upper and lower shell edges and that is parallel to line60, at least the lengthwise center point of the shell lower edge22does not lie in the same plane as at least the lengthwise center point of the shell upper edge20. In an embodiment, one or more locations along the shell lower edge22(e.g., a location at the lengthwise center point of the lower edge, which includes the convex contour25) may extend (from the leading forward cup edge) 10-25 mm (millimeters) further than one or more locations along the shell upper edge20(e.g., a location at the lengthwise center point of the upper edge). For example, one or more locations along the shell lower edge22(e.g., a location at the lengthwise center point of the lower edge, which includes the convex contour25) may extend (from the leading forward cup edge) as much as 14 mm-23 mm further from a corresponding one or more locations along the shell upper edge20(e.g., a location at the lengthwise center point of the upper edge). In another example embodiment, one or more locations along the shell lower edge22(e.g., a location at the lengthwise center point of the lower edge, which includes the convex contour25) may extend (from the leading forward cup edge) as much as 17 mm-20 mm (from the forward cup edge) further from a corresponding one or more locations of the shell upper edge20(e.g., a location at the lengthwise center point of the upper edge).

This asymmetrical configuration, including extension of the shell lower edge beyond the shell upper edge in this manner and to the degree as described herein (e.g., from 10-25 mm, from 14-23 mm, or from 17-20 mm), provides more engaging or contact surface area between the chin strap2and the chin of a user wearing the chin strap at the lower chin strap portion beneath the user's chin in relation to other known chin straps. The changing profile of the shell lower edge22(from locations23having a concave curvature to central location25having a convex curvature) also enhances alignment of the lower edge22along and underneath the user's chin (e.g., with the central location25of the shell lower edge22fitting directly under and at a central portion of the user's chin). This configuration of the chin strap2further helps to secure the position of the chin strap10on the user's chin, preventing or significantly limiting movement of the chin strap in relation to the user's chin during use and even in scenarios in which the chin straps6are adjusted to be loosely fastened such that the chin strap2is not pulled tight but instead lies loose along the user's chin.

The cushion member30is secured to an inner or interior surface of the shell10that opposes its outer surface. The cushion member30has a geometric configuration that generally corresponds with the shell. The cushion member30can be secured in any suitable manner to the interior surface of the shell10(e.g., via a suitable adhesive and/or any other suitable fastener). In particular, the cushion member30has an upper cushion member portion32and a lower cushion member portion34that are defined by the central lengthwise axis line4of the chin strap2. The lower cushion member portion34corresponds with lower shell portion26and the upper cushion member portion32corresponds with the upper shell portion24, where the lower cushion member portion34has a greater contact surface area to engage with a user's chin in relation to the upper cushion member portion32. An interior (chin-facing) surface of the cushion member30has a generally curved and concave contour extending the lengthwise dimension of the chin strap2, where the contour of the interior surface is configured to generally conform to a user's chin placed within the chin strap.

As previously noted, the cushion member30is constructed of a suitably soft, flexible and compressible material, since the cushion member30is configured to engage the user's chin during use of the chin strap2. As shown inFIG. 3, a series of slightly raised and elongated protrusions36extend from the exterior surface of the cushion member30(i.e., the surface of the cushion member that engages with a user's chin when the user is wearing the chin strap) at different locations along the exterior surface. In the example embodiment ofFIG. 3, the protrusions36are elongated and linear with a pattern of two or more elongated protrusions aligned with one or more ventilation grooves16. However, protrusions can be provided on the exterior surface of the cushion member having other suitable shapes and dimensions and can further be arranged in other suitable patterns along the exterior surface. The protrusions36are suitably dimensioned and arranged along the exterior surface of the cushion member30. The protrusions36serve as spacing members, providing a slight gap or distance between the skin of the user's chin and a portion or the entire interior surface area of the cushion member30, thus significantly preventing or inhibiting sticking or a suction-like engagement between the user's chin and the cushion member30during use of the chin strap2.

The chin strap2can be provided with further features that allow for a secure and comfortable engagement of the chin strap with a user's chin during use. In particular, the outer shell10can include raised ridges14disposed at the lengthwise ends of each cut-out section12for the straps6(i.e., the ridges14are spaced apart at least the length of the cut-out section12). In particular, each cut-out section12has a lengthwise dimension that is transverse the lengthwise dimension of the shell10(e.g., transverse line4), whereas each raised ridge14has a lengthwise dimension that corresponds with (i.e., extends in the same general direction as) the lengthwise dimension of the shell10and is located on either side of the lengthwise ends of the cut-out section12(i.e., the cut-out section12lies between each raised ridge14on each side of the shell10). Each raised ridge14further comprises a ramped surface17A that extends away from the outer contour of the shell10to an edge surface17B located at the cut-out section12. The edge17B of each raised ridge14further extends along the lengthwise dimension of the raised ridge and toward a lengthwise end of the shell10. A recessed lower surface or depression15within the outer surface contour of the shell10is defined between the edges17B of the two ridges14as well as between the cut-out section12and the lengthwise end11a,11bof the shell10. When a strap6is inserted through a cut-out section12of the shell10, a portion of the strap extending around the outer surface of the shell10is positioned within the depression15and between the two raised ridges14, such that the ridges14and depression15define a channel within the outer surface of the shell for the strap6. The channel that is defined and bounded by the ridges14prevents or significantly limits lateral movements of the strap6at its connection with and in relation to the lengthwise dimension of the chin strap2when the strap is secured to the chin strap at the cut-out section12, which further enhances the effectiveness of the connection between the chin strap and the helmet. The ridges14, furthermore, function as structural members (robs or gussets), adding strength and rigidity to the outer shell10.

Operation of the chin strap2is now described with reference toFIGS. 1-7. Referring toFIG. 7, a head gear protection device includes the chin strap2ofFIGS. 1-6secured to a helmet40via the straps6(e.g., using the metal button/snap connection as previously described herein). Any suitable helmet40can be utilized (e.g., a football helmet, a hockey helmet, a lacrosse helmet, a police/riot gear helmet, etc.) for connection with the chin strap2, so long as the helmet includes connection structure that corresponds with the connection structure provided on the ends of the straps6of the chin strap. Generally, the helmet40is configured to fit around at least a portion of a user's head and is constructed of a suitably hard yet relatively lightweight material to absorb and/or disperse forces applied to the helmet such that such there is less impact of such applied forces to the user's head.

The chin strap2is preferably aligned for connection with the helmet40such that the first or upper shell portion24is positioned to extend above the user's chin while the lower shell portion26is positioned such that at least some of this portion26(including the central location25of the lower edge22) extends below the user's chin. This configuration establishes an extended engaging contact surface between the chin strap2and an area beneath the user's chin. Each strap6is also secured within the channel defined by ridges14and depression15so as to prevent or significantly limit transverse movements of the strap6at its connection with the chin strap2. The length of each strap6can be adjusted using its corresponding buckle9so that the user can modify how loose or tight the chin strap2is engaged with the user's chin.

During a physical activity, when a user encounters a force applied to the chin strap, the hard outer shell10and inner cushion member30disperse and absorb the force such that the applied force is not translated entirely to the user's chin (e.g., only a smaller portion or none of the applied force is applied to the user's chin). Further, the extended surface areas of the lower shell portion26and lower cushion member34in relation to the upper shell portion24and upper cushion member32prevent or significantly limit disengagement of the chin strap2from the user's chin even in scenarios in which the chin strap is loosely engaged around the user's chin (e.g., the straps6are adjusted via the buckles9such that the chin strap is not pulled very tight to the user's chin). The protrusions36on the interior surface of the cushion member30also prevent or limit the chin strap2from engaging in a suction tight fit with the user's chin.

With the above-described configuration, a chin strap is provided having a more secure fit on the user. For example, if the helmet is repositioned on the head via an outside force (during game play), the asymmetrical configuration including the extended cup wall will retain the helmet on the head (i.e., the chin strap of the invention is more effective at retaining the helmet on the head compared to conventional symmetrical chin straps). Additionally, the chin strap of the present invention ensures protection for the user's chin even in scenarios in which the user chooses to adjust the chin strap to a very loose engagement with his or her chin.

While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof. For example, the cushion member or the shell may be eliminated. Additionally, when both the shell and the cushion member are present, only one component may be asymmetrical, with the other being symmetrical. The chin strap, moreover, may be formed of fabric. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It is to be understood that terms such as “top”, “bottom”, “front”, “rear”, “side”, “height”, “length”, “width”, “upper”, “lower”, “interior”, “exterior”, and the like as may be used herein, merely describe points of reference and do not limit the present invention to any particular orientation or configuration.