Patent Grant
7686321
1. Field of Invention
The present invention relates generally to a highback for gliding sports and, more particularly, to a highback for snowboarding.
2. Discussion of Related Art
Snowboard binding systems for soft snowboard boots typically include an upright member, called a “highback” (also known as a “lowback” and a “SKYBACK”), that is contacted by the rear region of a rider's leg. The highback, which may be mounted to a binding or a boot, acts as a lever that helps transmit forces directly to and from the board, allowing the rider to control the board through leg movement. For example, flexing one's legs rearward against the highback places the board on its heel edge with a corresponding shift in weight and balance acting through the highback to complete a heelside turn.
Known highbacks generally include an upright support member formed with a pair of lateral ears that are employed to pivotally mount the highback in a heel-to-toe direction along a mounting axis that is transverse to the longitudinal axis of the binding or boot. In some instances, the highback may also be mounted for lateral rotation about a substantially vertical axis to accommodate a particular stance angle of the binding relative to the board.
Known highbacks are typically molded from a composite material and/or a plastic material. A highback formed from a composite material, while sleek and lightweight, is generally very stiff. In contrast, a highback formed from a more flexible plastic material generally is bulky and relatively heavy due to structural features typically molded into the highback that provide the necessary stiffness for force transmission.
It is an object of the present invention to provide an improved highback.
In one illustrative embodiment of the invention, a highback is provided for use with a gliding board component that interfaces with a rider's leg and is supportable by a gliding board. The highback comprises a highback body including an upright support member having a leg contact region. The leg contact region includes a textile-like material that comes into contact with and contributes to transmitting forces from a rider's leg during use.
In another illustrative embodiment of the invention, a snowboard binding highback comprises a highback body including an upright support member having a leg contact region to support a rear region of a rider's leg. The support member has an opening at the leg contact region and includes a fabric material extending across the opening to support and assist in transmitting forces from a portion of the rear region of the rider's leg that is to be located adjacent the opening during use.
In a further illustrative embodiment of the invention, a snowboard binding is provided for securing a snowboard boot to a snowboard. The snowboard binding comprises a base that is constructed and arranged to be mounted to a snowboard, and a highback mounted to the base. The highback includes an upright support member to support a rear region of a rider's leg. The support member has an open space therein and includes a textile-like material extending across the open space. The textile-like material is to be engaged by and to contribute to the transmission of forces from a portion of the rear region of the rider's during use.
Various embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
The present invention is directed to a highback for controlling a gliding board, such as a snowboard, through leg movement of a rider. The highback may be used with a component, such as a gliding board binding, a boot or a binding interface, that interfaces with a rider's leg and is supportable by the gliding board. The highback is comprised of an upright support member to support a region of the rider's leg. The support member may include one or more mounting locations for mounting the highback to the gliding board component.
For purposes of this patent, “gliding board” refers generally to specially configured boards for gliding along a terrain such as snowboards, snow skis, water skis, wake boards, surf boards and other board-type devices which allow a rider to traverse a surface, and “gliding board component” refers generally to bindings, boots, binding interfaces or other components that may interface with a rider's foot or leg and be supportable by the gliding board.
The highback includes a textile-like material that extends across a portion of the support member to provide support for a portion of the rider's leg. The textile-like material provides support that allows the highback to function as a lever for transmitting forces to and from a board. More particularly, the textile-like material assists in transmitting energy or forces from a rider's leg to the gliding board during use of the highback. Without the textile-like material, the force transmission characteristics of the highback would change and may become less effective. In this regard, the textile-like material is a functional, and not merely a cosmetic, component of the highback.
The support member includes a leg contact region that is to be contacted by a portion of the rider's leg. The textile-like material may be provided at the leg contact region for direct contact with the portion of the rider's leg to assist in force transmission.
The textile-like material may be supported at the leg contact region so that at least a portion of the material is effectively suspended in relation to a support structure. In this regard, the material may be supported so that there is no direct support against the front and back sides or surfaces of the portion of the material. In certain embodiments, the textile-like material may provide a hammock-like arrangement for supporting the rider's leg.
The support member may have an open space or opening therein with the textile-like material extending across the opening for direct contact with a portion of the rider's leg or boot. The opening may include a hole or aperture that extends through the support member, an open-ended cavity or recess within the support member, or a space that exists between spaced apart support structures. The textile-like material may be tensioned across the opening or open space to help support the rider's leg or boot from pushing through the opening or between the spaced support structures as the rider presses against the highback to transmit forces for controlling the gliding board during riding maneuvers. The material also helps to distribute forces across the rider's leg or boot so as to reduce pressure points against the rider's leg.
The textile-like material may include one or more filaments, a fabric or a fabric-like material that has the appearance and properties of a fabric. The material may be relatively flexible and conformable as compared to other portions of the support member, such as rigid structural members, so that the material may readily conform to the rider's leg or boot for enhanced support and/or comfort. The textile-like material also provides a level of structural support that materially contributes to transmitting forces or energy from the rider's leg for controlling the gliding board during use.
One or more filaments may extend across the leg contact region or opening in one or more directions. In one embodiment, one or more filaments extend across the opening in a first direction and one or more filaments extend across the opening in a second direction that is transverse to the first direction. However, it is to be appreciated that filaments extending in different directions are not required for each embodiment of the highback. It is also to be understood that one filament may pass back and forth across the leg contact region or opening in one or more directions to effectively form multiple filaments or groups of filaments.
The filaments may employ various filament-like structures including, but not limited to, monofilament, multifilament, yarn, thread, string, cord and wire. The filaments may be fabricated from various materials including, but not limited to, plastic, metal and textile materials. The filaments may be selected to provide various characteristics including, but not limited to, strength, resiliency, flexibility, elasticity and/or stretch characteristics. The highback may employ all the same types of filaments or various combinations of different filaments to achieve desired support characteristics or properties. It is to be understood, however, that the use of filaments is not required for each embodiment of the highback.
The textile-like material may include a fabric that is coupled to the support member to support the rider's leg. The fabric may include textile fabrics, such as woven, non-woven, knitted or braided fabrics. The fabric may include one or more filaments that are fabricated into the fabric. In one embodiment, the fabric may be a mesh fabric. It is to be understood, however, that the use of a mesh fabric is not required for each embodiment of the highback.
The textile-like material may include a fabric-like material that is coupled to the support member to support the rider's leg. The fabric-like material may have the appearance and properties of a textile fabric. In this regard, the fabric-like material may have flexibility, conformability and supportive properties similar to those of a textile fabric. For example, the textile-like material may include a molded fabric-like material or a finely fenestrated screen. It is to be understood, however, that the use of a fabric-like material is not required for each embodiment of the highback.
The textile-like material may be coupled to the support member using various attachment or fastening techniques. Such techniques may include, but are not limited to, molding, gluing, bonding, stapling, stitching, lacing and stringing. In one embodiment, the material is overmolded to a portion of the highback.
The highback may be provided with an opening or open space to reduce the overall weight of the highback. The size of the opening may vary depending on the amount of weight reduction and the degree of structural support desired for the highback. In one embodiment, the opening has an area of at least 20 cm2. It is to be understood, however, that an opening having such a minimum area is not required for each embodiment of the highback and that openings having other sizes are contemplated.
The highback has an inner surface that is engaged by the rear of the rider's leg and/or boot for transmitting forces. In one embodiment, the opening is at least 12% of the inner surface area of the highback. It is to be understood, however, that this particular ratio of the opening to the inner surface area is not required for each embodiment of the highback and that other ratios are contemplated.
In one illustrative embodiment as shown in
The support member 22 preferably has a contoured configuration that is compatible with the shape of a rider's leg (with or without footwear, such as a boot, depending upon the riding application). The support member 22 may include a lower portion 28 with a heel cup 30 that is configured to grip and hold the heel portion of the boot. As shown, the lateral ears extend from opposing sides of the heel cup 30. The support member 22 may also include an upper portion 32 that is configured to extend along and to be contacted by a region of the rider's leg to provide support for turning and controlling the board.
The highback may include a textile-like material that extends across a leg contact region or portion of the support member to support a portion of the rider's leg. In one illustrative embodiment shown in
The highback 20 may be provided with one or more open spaces or openings to reduce the overall weight of the highback. In one illustrative embodiment shown in
As illustrated, the opening may extend completely through the upper portion of the highback so as to form an aperture or hole. It is to be appreciated, however, that the opening may not extend entirely through the highback and may include a cavity, a recess or similar feature that has an open end with the textile-like material extending across the open end of such a feature.
The filaments 34 may extend across the opening 36 in one or more directions. In one illustrative embodiment, the filaments include one or more filaments that extend across the opening in a first direction 38 and one or more filaments that extend across the opening in a second direction 40 that is transverse to the first direction. As shown, the filaments may extend across the opening in directions that are perpendicular to each other. However, it is to be appreciated that the filaments 34 may include filaments that extend in a single direction, such as vertically, horizontally or diagonally, across the opening. It is also to be appreciated that filaments may extend across the opening in any desired transverse directions. It is also to be understood that one filament may extend back and forth across the leg contact region or opening in one or more directions to effectively form multiple filaments or groups of filaments.
The highback 20 may employ one or more filaments, a fabric or a fabric-like material that is incorporated in the support member to support the rider's leg. In one illustrative embodiment, a sheet or layer of fabric 42 is coupled to the support member 22 and extends across the opening 36 to provide rider support. The fabric may be fabricated from a plurality of filaments 34. The fabric 42 may be formed using various techniques including, but not limited to, weaving, knitting, braiding and non-woven techniques. In one embodiment, the highback employs a mesh fabric. The highback may employ various fabric patterns and/or filaments to provide different support characteristics at different locations.
The fabric 42 may have one or more properties including, but not limited to, strength, tear resistance, abrasion resistance, water resistance and UV resistance properties, as would be suitable for the particular application.
In one illustrative embodiment, the mesh fabric 42 is woven from nylon PA6 (polyamide) monofilaments. However, the fabric 42 or individual filaments 34 may employ other filament-like structures including, but not limited to, multifilament, yarn, thread, string, cord and wire. The filaments 34 may be fabricated from various materials including, but not limited to, plastic, metal and textile materials. The highback may employ all the same types of filaments or various combinations of different filaments to achieve desired support characteristics or properties.
As indicated above, the highback may be provided with one or more openings to reduce the overall weight of the highback. The size of the opening may vary depending on the amount of weight reduction and the degree of structural support desired for the highback.
In the illustrative embodiment as shown in
In one illustrative embodiment, the highback 20 employs a textile-like material as support across an opening 36 having an area of at least 20 cm2. In another embodiment, the area of the opening is at least 25 cm2. In another embodiment, the area of the opening is at least 30 cm2. In a further embodiment, the opening has an area of at least 35 cm2. In another embodiment, the area of the opening is at least 40 cm2. In a further embodiment, the area of the opening is at least 45 cm2. In another embodiment, the opening has an area of at least 50 cm2. In a further embodiment, the opening has an area of at least 60 cm2. It is to be understood, however, that the highback 20 may employ filaments 34 as a support across an opening having other minimum areas and that openings having other sizes are contemplated.
In one illustrative embodiment, the highback employs a textile-like material as support across an opening that occupies at least 12% of the inner surface area. In another embodiment, the opening occupies at least 15% of the inner surface area. In another embodiment, the opening occupies at least 19% of the inner surface area. In a further embodiment, the opening occupies at least 22% of the inner surface area. In another embodiment, the opening occupies at least 25% of the inner surface area. In a further embodiment, the opening occupies at least 28% of the inner surface area. In another embodiment, the opening occupies at least 31% of the inner surface area. In a further embodiment, the opening occupies at least 38% of the inner surface area. In determining the ratio of the opening 36 to the inner surface area of the highback, the inner surface area includes the inner surface areas of the heel hoop 30 and the upper portion 32 of the back member 22 and the areas of any openings 36 within the back member of the highback. It is to be understood, however, that these minimum ratios of the opening to the inner surface area are not limiting for each embodiment of the highback and that other ratios are contemplated.
The highback 20 may include a single support structure or multiple structures that are combined to form the highback. In one illustrative embodiment shown in
In one illustrative embodiment as best shown in
In one illustrative embodiment, the spine 46 is configured to provide the highback with progressive flex along the vertical direction of the highback. In this regard, the highback is configured so that it has a higher degree of flexibility at its upper end that decreases to a lower degree of flexibility at its lower end. As shown, the spine 46 includes a pair of elongated fingers or branches 48 that extend upwardly from a central portion or trunk 50 of the spine, which extends upward from a base portion 52 of the spine. As shown, the branches 48, which are relatively narrow and flexible, transition into a wider, more rigid trunk 50 which transitions into an even wider, more rigid base 52. In this manner, the flexibility of the spine 46 progressively decreases from the branches to the trunk and into the base of the spine.
As shown, the branches 48 are configured to support the upper region of the upper frame 44. The base 52 of the spine is configured to support the lower region of the upper frame.
The upper frame 44 may include one or more frame members for supporting the filaments. In one illustrative embodiment as best shown in
In the illustrative embodiment, the upper frame 44 is formed as a single, unitary structure. However, it is to be understood that separate side, top and/or bottom members may be attached or connected together to form the upper frame.
In one illustrative embodiment, the upper frame 44 is attached to the lower frame 43 using mechanical fasteners. As shown, each corner region of the upper frame 44 is secured to the spine 46 of the lower frame with a fastener. In one embodiment as best shown in
In one illustrative embodiment as best shown in
A resilient pad may be provided to increase hold, to absorb shock and to facilitate pressure distribution across the boot and leg. In one illustrative embodiment as shown in
The highback 20 may be configured so that the upper portion 32 is adjustable in a heel-to-toe direction to allow for adjustment of the forward lean of the highback that is independent of the lower portion 28. More particularly, the forward lean of the highback may be adjusted without an accompanying movement of the lower portion 28 about a mounting axis of the highback. Consequently, the lower portion 28 may include a heel cup 30 that conforms closely to the shape of the boot for enhanced heel hold down, since the heel cup does not need to be configured to account for the up and down or pivoting movement of the lower portion 28 typically associated with forward lean adjustment of known highbacks.
In one illustrative embodiment shown in
In one illustrative embodiment, the upper portion 32 is movably connected to the lower portion 28 using a living hinge 66 arrangement that is integrally formed in the lower frame of the highback. The living hinge 66 is formed at each end of a slot 68 by segments of the opposite edges of the lower frame that interconnect the spine 46 to the lower portion 28. It is to be understood that the spine 46 and the lower portion 28 may be hinged to each other using mechanical fasteners, such as pins, rivets, brackets and the like, that allow the spine, and consequently the upper portion, to pivot or otherwise move relative to the lower portion to facilitate forward lean adjustment. An example of a highback with independent forward lean adjustment is disclosed in U.S. Pat. No. 6,554,296, which is incorporated herein by reference.
The forward lean of the highback 20 may be set using a forward lean adjuster that prevents the upper portion from moving in the heel direction beyond a predetermined forward lean position. In one illustrative embodiment as best shown in
Forces are transmitted to and from a board through the highback allowing a rider to control the board through leg movement. In one illustrative embodiment as best shown in
The upper and lower frames 44, 43 may be injection molded from a plastic material. In one embodiment, the upper and lower frames 44, 43 are molded as separate unitary structures that are subsequently combined to create the highback. Alternatively, the highback 20 may be fabricated as a unitary structure.
In one illustrative embodiment, a fabric 42 is molded to the upper frame 44. In particular, the fabric 42 is overmolded during fabrication of the upper frame. As shown in
It is to be appreciated that the textile-like material may be coupled to the support member using other attachment or fastening techniques. For example, the material may be glued, bonded, stapled, stitched or laced to the upper frame 44 or to the back member 22 should the highback include a single frame structure. If individual filaments 34 are used as support across an opening, the filaments may be strung or laced to the support structure in a manner similar to stringing a racquet, such as a tennis racquet.
The highback 20 may be formed with any suitable material, including plastic materials such as nylon, polycarbonate, polyurethane, polyolefin, polyurethane and the like, that is capable of providing efficient force transmission from the rider to the board. In one embodiment, the lower frame 43 is fabricated from a nylon material, such as ZYTEL available from DuPont. In one embodiment, the upper frame 44 is fabricated from nylon materials. In particular, the inner overmold frame 74 is fabricated from a nylon resin, such as ZYTEL ST801, and the outer overmold frame 76 is fabricated from a glass reinforced nylon resin, such as ZYTEL 80G33.
It is also contemplated that the highback frames 43, 44 may be formed from two or more materials to provide varying degrees of stiffness throughout the highback.
While several examples are described above, it is to be appreciated that the highback may be fabricated with any suitable materials using any suitable manufacturing processes as would be apparent to one of skill in the art.
As indicated above, the support structure for the textile-like material does not need to completely surround the opening 36 or material extending across the opening. In another illustrative embodiment shown in
As shown, the highback 80 does not include a heel cup formed by a plastic material as in known highbacks. Rather, the textile-like material extends into the lower portion of the highback to provide heel support for the rider. In this regard, the lower region 84 of the fabric 42 or other textile-like material acts as a heel cup for holding the heel portion of a boot. If desired, a heel hold down pad 86 may be provided at the lower end of the fabric.
It may be desirable to allow a rider to adjust the amount of support provided by the filament or fabric support of the highback. In one illustrative embodiment as shown in
As shown in the illustrative embodiment, the upper end of the support fabric 42 is not supported by a structural cross member. This configuration may provide a higher degree of comfort and/or flexibility that may be desirable to a rider. This highback configuration may also be suitable for use with an adjustable width binding whereby the width of the highback may be adjusted in a corresponding manner. As the width of the highback is adjusted, the tension in the fabric may also be adjusted with the tension device 88.
For additional support, if desired, the highback 80 may include a top support member 90 (shown in phantom) that interconnects the upper ends of the side supports 82 and is coupled to the fabric 42.
The highback 20 may be employed in any gliding board activity, such as snowboarding, that would benefit from leg support. For ease of understanding, however, and without limiting the scope of the invention, the highback is now described below in connection with a snowboard binding.
In an illustrative embodiment shown in
In another illustrative embodiment shown in
The highback, however, is not limited to use with any particular type of binding. For example, the highback may be used with a baseless binding. The highback may also be implemented with a step-in snowboard binding that includes a locking mechanism that engages corresponding features provided, either directly or indirectly, on a snowboard boot. Examples of several step-in bindings that may incorporate the highback are described in U.S. Pat. Nos. 5,722,680 and 6,123,354, which are incorporated herein by reference.
In another aspect, the highback may be either permanently attached to or removable from a snowboard boot. A removable highback provides system flexibility by allowing the boot to be implemented with binding systems that already include a highback mounted to a binding baseplate. In a further aspect, the highback may be implemented with a detachable binding interface system for interfacing a boot to a binding. Examples of employing a highback on a boot or with a detachable binding interface system are described in U.S. Pat. Nos. 6,543,793 and 6,554,296, which are incorporated herein by reference.
For ease of understanding, and without limiting the scope of the invention, the inventive highback to which this patent is addressed has been discussed particularly in connection with a binding that is used in conjunction with a snowboard. It should be appreciated, however, that the present invention may be used in association with other types of gliding boards. Thus, for purposes of this patent, “gliding board” refers generally to specially configured boards for gliding along a terrain such as snowboards, snow skis, water skis, wake boards, surf boards and other board-type devices which allow a rider to traverse a surface.
It should be understood that the foregoing description of various embodiments of the invention are intended merely to be illustrative thereof and that other embodiments, modifications, and equivalents of the invention are within the scope of the invention recited in the claims appended hereto.
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