The present invention relates to a chin strap used in sports and other physical activities.
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.
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.
Like reference numerals have been used to identify like elements throughout this disclosure.
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 to
The shell 10 is 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 shell 10. The inner cushion member 30, being configured to directly engage with the user's chin, is made of a softer and more flexible material in relation to the shell 10 so as to provide a cushioning effect as well as further absorption of any impact forces applied to the chin strap 2 when worn by the user. By way of example, the inner cushion member 30 may be formed of a compressible material such as ethylene vinyl acetate foam, polyurethane foam, etc.
The protective shell 10 has a curved and generally cross-sectional convex contour that extends in a lengthwise direction of the shell 10 such that the shell generally corresponds with the contour of a user's chin. The shell 10 defines a first lengthwise end 11a and a second lengthwise end 11b (see
A cut-out section or window 12 is provided at each lengthwise end 11a, 11b of the shell 10, where each cut-out section 12 facilitates connection of the shell with a corresponding connection member 5A, 5B. Specifically, each connection member 5A, 5B includes an elongated strap 6 such that the strap passes through the cut-out section. As described herein (in relation to the embodiment of
Each strap 6 can connect with the shell 10 in any conventional or other suitable manner, e.g., by looping a portion of the strap 6 through a corresponding cut-out section 12 and then securing two ends of the strap 6 to the helmet in a conventional manner. As shown in
The straps 6 can further include any suitable structure that facilitates a lengthwise adjustment of each strap so as to selectively adjust a distance of the chin strap 2 from the helmet. For example, each snap connector 8 can further include a loop adjuster or buckle 9 that selectively and releasably locks a loop portion of the strap 6 in relation to the buckle 9, which in turn selectively adjusts a length dimension between the snap connection of the helmet and a lengthwise end of the shell 10.
The outer shell 10 and underlying cushion member 30 can include corresponding cut-out sections that define openings or grooves 16 extending through the chin strap 2 (as shown in
As can be seen in
When taking a cross-section of the shell 10 on a central axis along its lengthwise dimension, in particular along dashed line 4 shown in
Stated another way, at least a portion of the shell lower edge 22 extends further from the leading forward edge of the cup 3 than at least a portion of the shell upper edge 20. That is, referring to
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 strap 2 and 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 edge 22 (from locations 23 having a concave curvature to central location 25 having a convex curvature) also enhances alignment of the lower edge 22 along and underneath the user's chin (e.g., with the central location 25 of the shell lower edge 22 fitting directly under and at a central portion of the user's chin). This configuration of the chin strap 2 further helps to secure the position of the chin strap 10 on 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 straps 6 are adjusted to be loosely fastened such that the chin strap 2 is not pulled tight but instead lies loose along the user's chin.
The cushion member 30 is secured to an inner or interior surface of the shell 10 that opposes its outer surface. The cushion member 30 has a geometric configuration that generally corresponds with the shell. The cushion member 30 can be secured in any suitable manner to the interior surface of the shell 10 (e.g., via a suitable adhesive and/or any other suitable fastener). In particular, the cushion member 30 has an upper cushion member portion 32 and a lower cushion member portion 34 that are defined by the central lengthwise axis line 4 of the chin strap 2. The lower cushion member portion 34 corresponds with lower shell portion 26 and the upper cushion member portion 32 corresponds with the upper shell portion 24, where the lower cushion member portion 34 has a greater contact surface area to engage with a user's chin in relation to the upper cushion member portion 32. An interior (chin-facing) surface of the cushion member 30 has a generally curved and concave contour extending the lengthwise dimension of the chin strap 2, 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 member 30 is constructed of a suitably soft, flexible and compressible material, since the cushion member 30 is configured to engage the user's chin during use of the chin strap 2. As shown in
The chin strap 2 can 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 shell 10 can include raised ridges 14 disposed at the lengthwise ends of each cut-out section 12 for the straps 6 (i.e., the ridges 14 are spaced apart at least the length of the cut-out section 12). In particular, each cut-out section 12 has a lengthwise dimension that is transverse the lengthwise dimension of the shell 10 (e.g., transverse line 4), whereas each raised ridge 14 has a lengthwise dimension that corresponds with (i.e., extends in the same general direction as) the lengthwise dimension of the shell 10 and is located on either side of the lengthwise ends of the cut-out section 12 (i.e., the cut-out section 12 lies between each raised ridge 14 on each side of the shell 10). Each raised ridge 14 further comprises a ramped surface 17A that extends away from the outer contour of the shell 10 to an edge surface 17B located at the cut-out section 12. The edge 17B of each raised ridge 14 further extends along the lengthwise dimension of the raised ridge and toward a lengthwise end of the shell 10. A recessed lower surface or depression 15 within the outer surface contour of the shell 10 is defined between the edges 17B of the two ridges 14 as well as between the cut-out section 12 and the lengthwise end 11a, 11b of the shell 10. When a strap 6 is inserted through a cut-out section 12 of the shell 10, a portion of the strap extending around the outer surface of the shell 10 is positioned within the depression 15 and between the two raised ridges 14, such that the ridges 14 and depression 15 define a channel within the outer surface of the shell for the strap 6. The channel that is defined and bounded by the ridges 14 prevents or significantly limits lateral movements of the strap 6 at its connection with and in relation to the lengthwise dimension of the chin strap 2 when the strap is secured to the chin strap at the cut-out section 12, which further enhances the effectiveness of the connection between the chin strap and the helmet. The ridges 14, furthermore, function as structural members (robs or gussets), adding strength and rigidity to the outer shell 10.
Operation of the chin strap 2 is now described with reference to
The chin strap 2 is preferably aligned for connection with the helmet 40 such that the first or upper shell portion 24 is positioned to extend above the user's chin while the lower shell portion 26 is positioned such that at least some of this portion 26 (including the central location 25 of the lower edge 22) extends below the user's chin. This configuration establishes an extended engaging contact surface between the chin strap 2 and an area beneath the user's chin. Each strap 6 is also secured within the channel defined by ridges 14 and depression 15 so as to prevent or significantly limit transverse movements of the strap 6 at its connection with the chin strap 2. The length of each strap 6 can be adjusted using its corresponding buckle 9 so that the user can modify how loose or tight the chin strap 2 is engaged with the user's chin.
During a physical activity, when a user encounters a force applied to the chin strap, the hard outer shell 10 and inner cushion member 30 disperse 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 portion 26 and lower cushion member 34 in relation to the upper shell portion 24 and upper cushion member 32 prevent or significantly limit disengagement of the chin strap 2 from the user's chin even in scenarios in which the chin strap is loosely engaged around the user's chin (e.g., the straps 6 are adjusted via the buckles 9 such that the chin strap is not pulled very tight to the user's chin). The protrusions 36 on the interior surface of the cushion member 30 also prevent or limit the chin strap 2 from 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.
This application claims priority to and is based on U.S. Provisional Patent Application No. 62/023,273, filed Jul. 11, 2014, entitled “Chin Strap,” the entire disclosure of which is incorporated herein by reference.
Number | Date | Country | |
---|---|---|---|
62023273 | Jul 2014 | US |