Patent Publication Number: US-2007096411-A1

Title: Device for retaining a kneeling rider on a gliding board

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
      Not Applicable  
     FEDERALLY SPONSORED RESEARCH  
      Not Applicable  
     SEQUENCE LISTING OR PROGRAM  
      Not Applicable  
     FIELD OF THE INVENTION  
      The present invention relates generally to the field of retaining a rider on a gliding board for use on snow, and relates more particularly to a device provided to secure a rider in a kneeling position to a gliding board for use on snow.  
     BACKGROUND OF THE INVENTION  
      The most common method for binding a rider to a gliding board is established in the sport of snowboarding, which has become an increasingly popular sport, and even an Olympic event at the winter games. The most common type of snowboard binding includes one or more straps that extend across a standing rider&#39;s boot to secure the rider&#39;s boot and therefore foot to a binding baseplate. A conventional snowboard strap binding typically delivers a feel or performance many riders find desirable. More particularly, a conventional snowboard strap binding allows a standing rider&#39;s foot to roll laterally when riding by allowing the boot to roll relative to the binding.  
      Many people, however, find riding a gliding board in a standing position undesirable for several reasons. First, riding the gliding board in a standing position requires a great deal of balance and so can be intimidating and difficult to learn with many people never learning it. Second, when a rider, especially a beginner, catches an edge of the gliding board in the snow, the standing rider takes a hard fall that might seriously injure the rider&#39;s knees, spine, head or other body parts. Additionally, a standing rider&#39;s face is approximately five to six feet above the snow surface distancing the rider&#39;s face from the aesthetically pleasing sensation of moving through powdery snow. In contrast, a kneeling position, which places the rider lower to the ground, reduces the balance required by the rider, reduces risk of injury to the rider, and for many people may make the experience of gliding over snow more enjoyable.  
      A few devices for kneeling on pairs of skis exist, but many people may find it undesirable or awkward and difficult to control two separate skis simultaneously in a kneeling position. Since the kneeling rider is lower to the ground, the rider has less leverage when he or she leans to turn in comparison with a standing rider, thus many people find turning two separate skis in a kneeling position difficult. Also, some people may find keeping two skis in the conventional parallel position while negotiating terrain using only their knees difficult as the skis have a tendency to drift apart, which could produce serious injury.  
      Other sledding and skiing devices exist that contain features that are merely a knee-pocket. Some people may find that the knee-pockets do not sufficiently bind the rider to the sledding or skiing device to provide enough control to turn and stop quickly. In large part this is because a knee-pocket does not provide the features necessary to bind sufficiently the rider&#39;s lower body to the sledding or skiing device. Lifting and torsional forces during riding can cause separation between the knee and the knee-pocket causing a loss of control.  
      Additional devices exist that are simply a sled with a strap across the top of the sled to provide a loose linkage of rider to sled. Since these straps are attached directly to the top of the sled wall, which is typically above the rider&#39;s knees, the strap typically rides just above the knees and consequently some people may find it does not provide enough control or bind the rider securely enough to the sled to ensure the rider&#39;s safety. In other cases the strap is attached to the side of a more board-like device, but even in these instances, because the strap is attached to the side of the board-like device, the strap is not secured directly against the sides of the legs, and so instead proceeds at a sloping angle from the top of the rider&#39;s thigh to the side of the board-like device. This leaves the sides of the legs free to slip from side to side.  
      Other devices exist described as sport knee boots that are configured to be worn all the time while skiing on knees and are configured specifically to be attached to a conventional ski binding and used with two separate skis. Many people may find wearing a knee boot both when attached and when not attached to skis uncomfortable and inconvenient. The knee boot also is configured specifically for use with two separate skis, which as mentioned above, many people may find makes it awkward, difficult, and unsafe for the rider.  
      Controlling a gliding board in a kneeling position down a snow-covered hill involves balance and control of movement. When steering down a slope, the rider leans in various directions in order to control the direction of the movement of the gliding board. Specifically, as the rider leans, his or her movements must be transmitted from the rider to the gliding board in order to maintain control. For example, when the rider leans to the right, the movement causes the gliding board to tilt accordingly turning in the direction of the lean. The motion corresponding to the direction of the lean of the rider is transmitted through the retaining device to the gliding board to effect turning or braking. Therefore, it is extremely important that the retaining device used by the rider have sufficient ability to transfer such leaning motion to the gliding board.  
      It is an object of the present invention to provide an improved device to secure a rider in a kneeling position to a gliding board for use on snow.  
     SUMMARY OF THE INVENTION  
      One embodiment of the present invention is directed to a retaining device to secure a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base that supports a portion of the rider&#39;s leg and a retention interface. The base has a front end and rear end and is configured to be attached to the gliding board in a manner so as to support sufficiently the rider. The retention interface includes one or more linkages that can be engaged and disengaged using a linkage engagement feature so as to enable exit from the retaining device when disengaged and so as to maintain sufficiently the portion of the rider&#39;s leg on the base when engaged.  
      A further embodiment of the present invention is directed to a retaining device to couple a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base that supports a portion of the rider&#39;s leg and a retention interface. The base has a front end and rear end and is configured to be attached to the gliding board in a manner so as to support sufficiently the rider. The base includes a base-positioning mechanism so as to enable the rider to move the base through a plurality of lockable positions so that the rider may adjust his or her position along a portion of the length of the gliding board. The retention interface includes two linkage systems to secure the portion of the rider&#39;s leg to the base. The two linkage systems are adjustable lengthwise, are adjustably attached to opposite sides of the base, and are secured over the portion of the rider&#39;s leg by mating using an incrementally adjustable linkage engagement feature. For additional rider support, a medial side stabilizer, a lateral side stabilizer, and a front stabilizer are attached to the base.  
      Another embodiment of the present invention is directed to a retaining device to bind a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a retention interface and a base. The base has a front end and a rear end, and an upper portion and a bottom portion. The base is configured to be attached to the gliding board in a manner so as to support sufficiently a portion of the rider&#39;s leg. The upper portion of the base is configured at an incline with respect to the bottom portion of the base sloping from the rear end to the front end. The retention interface includes one or more linkage members that can be secured and released using a linkage engagement feature so as to enable exit from the retaining device when released, and so as to maintain sufficiently the portion of the rider&#39;s leg on the base when secured.  
      A further embodiment of the present invention is directed to a retaining device to secure a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base including an upper portion and a bottom portion with the bottom portion configured to engage the gliding board. The retaining device further includes at least one linkage member supported along a side of the base, the linkage member being adapted to engage at least one linkage engagement feature supported along the side of the base opposing the side of the base supporting the linkage member. The linkage engagement feature is movable between an open position to release the linkage member and at least one closed position to secure the linkage member. The retaining device further includes a medial side and a lateral side with a portion of the rider&#39;s leg placed between the medial and lateral sides.  
      Another embodiment of the present invention is directed to a retaining device to secure a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base that includes an upper portion and a bottom portion with the bottom portion configured to engage the gliding board. The upper portion of the base is configured at an incline with respect to the bottom portion of the base sloping from the rear end to the front end. The retaining device further includes at least one linkage member supported along a side of the base, the linkage member being adapted to engage at least one linkage engagement feature supported along the side of the base opposing the side of the base supporting the linkage member. The linkage engagement feature is movable between an open position to release the linkage member and at least one closed position to secure the linkage member. The retaining device further includes a medial side and a lateral side with a portion of the rider&#39;s leg placed between the medial and lateral sides.  
      A further embodiment of the present invention is directed to a retaining device to secure a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base that supports a portion of the rider&#39;s legs and a retention interface. The base has a front end and rear end and is configured to be attached to the gliding board in a manner so as to support sufficiently the rider. The retention interface includes one or more linkages that can be engaged and disengaged using a linkage engagement feature so as to enable exit from the retaining device when disengaged and so as to maintain sufficiently the portion of rider&#39;s legs on the base when engaged.  
      Another embodiment of the present invention is directed to a retaining device to couple a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base that supports a portion of the rider&#39;s legs and a retention interface. The base has a front end and rear end and is configured to be attached to the gliding board in a manner so as to support sufficiently the rider. The base includes a base-positioning mechanism so as to enable the rider to move the base through a plurality of lockable positions so that the rider may adjust his or her position along a portion of the length of the gliding board. The retention interface includes two linkage systems to secure the portion of the rider&#39;s legs to the base. The two linkage systems are adjustable lengthwise, are adjustably attached to opposite sides of the base, and are secured over the portion of the rider&#39;s legs by mating using an incrementally adjustable linkage engagement feature. For additional rider support, a medial side stabilizer, a lateral side stabilizer, and a front stabilizer are attached to the base.  
      A further embodiment of the present invention is directed to a retaining device to bind a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a retention interface and a base. The base has a front end and a rear end, and an upper portion and a bottom portion. The base is configured to be attached to the gliding board in a manner so as to support sufficiently a portion of the rider&#39;s legs. The upper portion of the base is configured at an incline with respect to the bottom portion of the base sloping from the rear end to the front end. The retention interface includes one or more linkage members that can be secured and released using a linkage engagement feature so as to enable exit from the retaining device when released, and so as to maintain sufficiently the portion of the rider&#39;s legs on the base when secured.  
      Another embodiment of the present invention is directed to a retaining device to secure a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base including an upper portion and a bottom portion with the bottom portion configured to engage the gliding board. The retaining device further includes at least one linkage member supported along a side of the base, the linkage member being adapted to engage at least one linkage engagement feature supported along the side of the base opposing the side of the base supporting the linkage member. The linkage engagement feature is movable between an open position to release the linkage member and at least one closed position to secure the linkage member. The retaining device further includes a medial side and a lateral side with a portion of the rider&#39;s legs placed between the medial and lateral sides.  
      A further embodiment of the present invention is directed to a retaining device to secure a rider in a kneeling position to a gliding board for use on snow. The retaining device comprises a base that includes an upper portion and a bottom portion with the bottom portion configured to engage the gliding board. The upper portion of the base is configured at an incline with respect to the bottom portion of the base sloping from the rear end to the front end. The retaining device further includes at least one linkage member supported along a side of the base, the linkage member being adapted to engage at least one linkage engagement feature supported along the side of the base opposing the side of the base supporting the linkage member. The linkage engagement feature is movable between an open position to release the linkage member and at least one closed position to secure the linkage member. The retaining device further includes a medial side and a lateral side with a portion of the rider&#39;s legs placed between the medial and lateral sides. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The foregoing and other objects and advantages will be appreciated more fully from the description that follows, with reference to the annexed drawings illustrating, by way of non-limiting example, how the invention can be embodied, and in which:  
       FIG. 1  is a perspective view of a retaining device according to one illustrative embodiment of the invention;  
       FIG. 2   a  is a side view of the retaining device of  FIG. 1 ;  
       FIG. 2   b  is a partial cross-section view of the side of the retaining device of  FIG. 1  taken along the cross-sectional line  2   b - 2   b  of  FIG. 1 ;  
       FIG. 3  is a top view of the retaining device of  FIG. 1 ;  
       FIG. 4  is an exploded view of an adjustable first linkage member of the device of  FIG. 1 ;  
       FIG. 5  is an exploded view of a base-attachment mechanism of the device of  FIG. 1 ;  
       FIG. 6   a  is an exploded side view in default position of a ratchet-type fastener of the device of  FIG. 1 ;  
       FIG. 6   b  is an exploded side view with a ratchet lever raised of the ratchet-type fastener of the device of  FIG. 1 ;  
       FIG. 6   c  is an exploded side view illustrating the movement of a ratchet release of the ratchet-type fastener of the device of  FIG. 1 ;  
       FIG. 6   d  is an exploded perspective view of the ratchet-type fastener of the device of  FIG. 1 ;  
       FIG. 7  is a partial cross-sectional rear view of the device of  FIG. 1  taken along the cross-sectional line  7 - 7  of  FIG. 3 ;  
       FIG. 8  is an exploded partial cross-sectional rear view of the device of  FIG. 1  taken along the cross-sectional line  8 - 8  of  FIG. 3 ;  
       FIG. 9   a  is an exploded view of the quick-release mechanism of the device of  FIG. 1 ;  
       FIG. 9   b  is a cross-sectional view of the quick-release mechanism of the device of  FIG. 1  taken along the cross-sectional line  9   b - 9   b  of  FIG. 9   a ; and  
       FIG. 10  is a perspective view of a retaining device according to one illustrative embodiment of the invention slightly modified to support two legs therein. 
    
    
     DETAILED DESCRIPTION  
      The present invention is directed to an improved device for retaining a kneeling rider on a gliding board for use on snow that incorporates the convenience and riding performance of a conventional snowboard strap binding. This may be accomplished with a retaining device that includes a base, and a retention interface that includes one or more linkage members, and is configured to be coupled to the base in a manner similar to a conventional snowboard strap binding. Thus, when the retention interface is coupled to the base, the retaining device operates like, and provides the kneeling rider with a performance and feel, similar to a conventional snowboard strap binding. Although the base and the retention interface may be advantageously employed together, the present invention is not limited in this respect, as each of these aspects of the present invention can also be employed separately. For example, the base may be employed to directly engage one or both of the rider&#39;s legs, rather than engage one or both of the rider&#39;s legs through a separate interface. Similarly, the retention interface may be employed with numerous types of bases, and is not limited to use with the illustrative embodiments disclosed herein.  
      The retaining device may be configured so that the base engages one or more regions of the retention interface to provide a feel similar to that of a conventional snowboard strap binding. In this regard, each of the base-engagement regions can include base-attachment mechanisms that are positioned relative to each other so that forces exerted on the linkage members are transmitted through the base-attachment mechanisms in a manner that achieves a desired feel. Such a configuration may facilitate the transmission of forces exerted on the retention interface to the base in a manner similar to a conventional snowboard strap binding in which forces are transmitted directly to a binding baseplate through a strap mounted directly to the baseplate.  
      In one embodiment, the retaining device may employ a four point engagement between the retention interface and the base. Such an arrangement may substantially reduce, if not eliminate, movement between the retention interface and the base so that movement of the portion of the rider&#39;s leg relative to the base may be controlled by the manner in which the portion of the rider&#39;s leg is secured to the base through the retention interface. The arrangement causes the retaining device to have a performance and feel similar to a conventional snowboard strap binding by transmitting forces exerted by a rider to four points of engagement similar to the strap attachment points of a conventional snowboard strap binding. In this regard, corresponding pairs of linkage members may be arranged along opposing sides of the portion of the rider&#39;s leg. It is to be appreciated, however, that other embodiments of the retaining device do not employ a four-point engagement configuration.  
      In one embodiment, the retention interface may be configured with multiple linkage members to deliver a kneeling rider with a desired feel associated with conventional snowboard strap bindings. In this regard, the retention interface may include front and rear linkage systems that each may include one or more linkage members that are arranged to extend across a portion of the rider&#39;s leg. The linkage systems may be attached to regions of the base adjacent the base-attachment mechanisms so that forces exerted by the rider on the linkage systems are transmitted directly to regions of the retaining device in a manner similar to a conventional snowboard strap binding. It is to be understood, however, that other embodiments do not use multiple linkage members. And other embodiments do not attach the linkage systems adjacent the base-attachment mechanisms. Furthermore, other embodiments utilize base-attachment mechanisms that are not uniform in height. Still other embodiments utilize base-attachment mechanisms that are uniform in height.  
      In one embodiment, the base may include a base-positioning mechanism that may include two or more lockable positions along its length. Using the base-positioning mechanism, the rider can advantageously adjust his or her position forward or backward along a portion of the length of the gliding board to improve the performance of the gliding board. Typically, this would mean a forward position for harder-packed snow, so that the edge of the gliding board can more effectively carve into the snow surface, and a backward position for powdery snow, so that the front of the gliding board can ride up and better float over light snow. Since the rider is kneeling, he or she cannot lean backward or forward as much as a standing rider to lift or dive, respectively, the front of the gliding board. Consequently, a mechanism for adjusting the rider&#39;s position along a portion of the length of the gliding board is especially advantageous for a kneeling rider. While advantageous, other embodiments do not utilize a base-positioning mechanism. Still other embodiments enable adjustment of the rider&#39;s position along a portion of the length of the gliding board using any suitable configuration to achieve a variety of performance and convenience characteristics.  
      In one embodiment, two pairs of linkage members may be utilized and the pairs of linkage members may be adapted to engage each other utilizing a linkage engagement feature that can be moveable between an open position to release the pair of linkage members and at least one closed position to secure the pair of linkage members in a manner similar to a conventional snowboard strap binding.  
      In one embodiment, one or more linkage members are cushioned to enhance their comfort. In other embodiments, no linkage members are cushioned.  
      In one embodiment, the linkage engagement feature may be a ratchet-type fastener. In another embodiment, the linkage engagement feature may be hook and loop. Other embodiments of the linkage engagement feature do not utilize either a ratchet-type fastener or hook and loop. In one embodiment, the linkage engagement feature is supported by a linkage member. In other embodiments, the linkage engagement feature is not supported by a linkage member.  
      In one embodiment, front and rear linkage systems, and front, medial side, and lateral side stabilizers may be utilized that fit snugly against the portion of the rider&#39;s leg, but do not prevent the portion of the rider&#39;s leg from rolling therein. Consequently, the configuration does not inhibit roll within the retaining device in a manner similar to a conventional snowboard strap binding. This configuration also effectively transmits the direction of lean of the rider through the retaining device to the gliding board to effect turning or braking in a manner similar to a conventional snowboard strap binding. It is to be appreciated, however, that while advantageous, other embodiments may not employ front and rear linkage systems. It is also to be appreciated that other embodiments may employ linkage-member configurations without the addition of stabilizing features.  
      In one embodiment, a suspension system may be included that is layered between the base and the gliding board and may be available to the rider in varying degrees of stiffness including, but not limited to: soft, medium, and hard to allow the rider to customize the retaining device to suit his or her riding style. For instance, a more advanced or aggressive rider may prefer a suspension system with more stiffness than a less advanced or passive rider since the stiffer suspension system can be more responsive to the motion of the rider&#39;s leans. Other embodiments do not utilize a suspension system.  
      In one embodiment, a medial side stabilizer, a lateral side stabilizer, and a front stabilizer may be included that are supported by the base so as to substantially maintain the rider&#39;s side and front positions on the base. Other embodiments may not include stabilizers. Further embodiments may utilize one or more stabilizers.  
      In one embodiment, one or more stabilizer cushion members may be demountably attached to regions of the stabilizers that engage the rider to provide a more comfortable ride. In other embodiments none of the stabilizer cushion members may be demountably attached. Further embodiments may not utilize stabilizer cushion members.  
      In one embodiment, one or more of the base cushion members may be demountably attached to the base. In other embodiments, no base cushion member may be demountably attached to the base. Other embodiments may not utilize a base cushion member.  
      In one embodiment, the base includes an upper portion that is configured to form a substantially flat surface from the rear end toward the front end of the base. In other embodiments, however, the upper portion is configured at an acute angle with respect to the bottom portion of the base that may range from 5 to 35 degrees so that the upper portion forms an incline from the rear end toward the front end of the base.  
      In one embodiment, the retaining device may be configured to accommodate both of the rider&#39;s legs therein. In other embodiments, the retaining device may be configured for use as a paired device.  
      In one embodiment, the base may be configured to accommodate an accumulation of snow, ice or other debris at the front end of the base. In other embodiments, the base may not accommodate an accumulation of snow, ice or other debris at the front end of the base.  
      In one embodiment, the retaining device may be configured to support and retain a portion of one or both of the kneeling rider&#39;s legs. In other embodiments, however, the retaining device may be configured specifically to support and retain a portion or whole of one or both of the kneeling rider&#39;s knees, thighs, legs, calves and the like, or any combination thereof.  
      In one illustrative embodiment shown in  FIGS. 1-9 , the retaining device  14  includes a base  28  and a retention interface  46  that is configured to cooperate with the base  28  to secure a portion of a rider&#39;s leg  52  to a gliding board  12  along a longitudinal axis  26  extending through the entire length of the retaining device  14 . The portion of the rider&#39;s leg  52  extends along the longitudinal axis  26  when the rider is retained by the retaining device  14 . The retaining device  14  employs an engagement arrangement between the retention interface  46  and the base  28  in a manner similar to a conventional snowboard strap binding. In this regard, in one embodiment the retention interface  46  employs an engagement arrangement in which the retention interface  46  is attached to the base  28  in the region of each base-attachment mechanism  23 .  
      For example, when the retaining device  14  employs two pairs of linkage members, a four point engagement (two points on each side of the base  28  with each point in a region of one of the base-attachment mechanisms  23 ) is provided between the retention interface  46  and the base  28  to provide the feel of a conventional snowboard strap binding. It is to be appreciated, however, that the retaining device  14  may be configured to employ any number of engagement points greater than or less than four engagement points. Furthermore, in other embodiments of the invention, the retaining device  14  does not have engagement points aligned with base-attachment mechanisms. Although the base  28  and the retention interface  46  may be advantageously employed together, this particular embodiment of the retaining device  14  is not limited in this respect, as the base  28  and the retention interface  46  also can be employed separately. For example, the base  28  may be employed to directly engage the portion of the rider&#39;s leg  52 , rather than engage the portion of the rider&#39;s leg  52  through a separate interface.  
      As indicated above, the retention interface  46  is not limited to use with any particular base and, therefore, is not limited to the use of any particular mating features for engaging with a base. Notwithstanding the foregoing, the retention interface  46  will be described below in connection with a retaining device  14  that employs an attachment configuration wherein base attachment mechanisms  23  are provided in regions where the retention interface&#39;s linkage members are attached to the base. Thus, for a retention interface  46  including two linkage systems, a four-point attachment configuration is employed for the retaining device  14 .  
      In the illustrative embodiment shown in  FIGS. 1-9 , two linkage systems, a front linkage system  21   a - 21   a , and a rear linkage system  22   a - 22   a , are employed to secure the portion of the rider&#39;s leg  52  to base  28  in a manner similar to a conventional snowboard strap binding. Each linkage system, front  21   a - 21   a and rear  22   a - 22   a , includes: a first linkage member  31 , a second linkage member  32 , a third linkage member  33 , and a ratchet-type fastener  44 . It is to be understood, however, that the present invention is not limited to the use of any particular number or type of linkage member, as numerous other linkage-member arrangements, including arrangements with a single linkage member or more than two linkage members, may be employed for securing the portion of the rider&#39;s leg  52  to the retention interface  46 , and consequently to the gliding board  12  when the retention interface  46  is coupled to the base  28 . Thus, as used herein, the term linkage member is intended to indicate any structure that passes over a surface, or combination of surfaces, of the thigh, hip, knee, waist, leg, calf and the like, and performs this attachment function including straps, web-like structures, strings, laces, bails and the like.  
      In the illustrative embodiment shown in  FIGS. 1-9 , the linkage members are not cushioned. It is to be understood, however, that this is not a limitation of all embodiments of the invention, and any suitable linkage member configuration may be employed in accordance with other embodiments including, but not limited to, configurations in which the linkage members are cushioned with any suitable material or combination of materials such as ethylene vinyle acetate, leather, silicon gel and the like, to achieve any desired performance characteristics including, but not limited to, increased comfort, decreased weight, increased strength and the like. Consequently, the configuration illustrated in this embodiment should not be construed as limiting.  
      The linkage members may be formed from a plastic material, such as a molded polyurethane, a molded carbon-reinforced polyurethane and the like. It is to be understood, however, that the linkage members can be formed from any suitable material.  
      As indicated above, in one embodiment, each linkage system, front  21   a - 21   a  and rear  22   a - 22   a , includes: a first linkage member  31 , a second linkage member  32 , a third linkage member  33 , and a ratchet-type fastener  44 . The ratchet-type fastener  44  is one embodiment of a linkage engagement feature. As indicated above, the retention interface  46  may employ mating features having any configuration suitable for mating with corresponding base attachment mechanisms on the base. In one embodiment, each first and third linkage member is attached to the base  28  employing a base-attachment mechanism  23  that enables the attached position of the linkage member to be adjusted along the length of the base  28 . The base-attachment mechanism  23  includes a horizontal slot  55 , female striations  53 , and the striated engagement mechanism  54 . Striated engagement mechanism  54  has male striations on its underside facing and cooperating with the female striations  53 , to engage and disengage as screw  50  is tightened or loosened, respectively, by the rider into nut  45 .  
      The base-attachment mechanism  23  in the illustrative embodiment shown in  FIGS. 1-9  is integrally formed with the base  28  from one or more materials. In other embodiments, however, the base-attachment mechanism  23  is employed as one or more unique pieces made from one or more materials and affixed to base  28  using any suitable attachment configuration such as screws, adhesive, welding, rivets, bolts and the like to provide any desired performance characteristics. Consequently, the configuration illustrated in this embodiment should not be construed as limiting.  
      The base-attachment mechanism  23  enables the rider to advantageously adjust the position of each linkage system along the length of the base  28 . It is to be understood that while advantageous, the base-attachment mechanism  23  is not limited to this configuration. Any suitable configuration may be employed for the base-attachment mechanism  23  from something as simple as a screw, rivet and the like that does not enable adjustment along the length of the retaining device  14 , to something more complex such as a finger-operated quick-release mechanism that does not require a tool. Furthermore, as shown in  FIGS. 2   a  and  7 , the base-attachment mechanisms  23  are all of equal height. It is to be understood, however, that the base-attachment mechanisms are not limited to the configuration illustrated in this embodiment as other configurations are possible.  
      In the illustrative embodiment shown in  FIGS. 1-9 , the retaining device  14  includes a medial side  48  located on the same side of the base  28  as a medial side stabilizer  18 , a lateral side  49  located on the same side of the base  28  as a lateral side stabilizer  19 , a front end located on the same end of the base  28  as a front stabilizer  20 , and a rear end located on the end of the base  28  that opposes the front end of the base  28 .  
      As illustrated, in one embodiment, one pair of base-attachment mechanisms  23  is located along opposing sides of the base  28  and substantially near a middle region of the base  28  (the middle region of the base  28  defined as half the distance between the front end of base  28  and the rear end of base  28 ) so as to be in the same regions where the front linkage system  21   a - 21   a  is attached to base  28 . A second pair of base-attachment mechanisms  23  is located along the opposing sides of base  28  and substantially in the same region along the longitudinal axis  26  as that of well  35 , so as to be in the same regions where the rear linkage system  22   a - 22   a  is attached to base  28 . The particular configuration and/or location of the base-attachment mechanisms  23 , however, while advantageous, is not a limitation of all embodiments of the present invention as any suitable configuration or arrangement may be implemented to mount the linkage systems, front  21   a - 21   a  and rear  22   a - 22   a , to the base  28  including, but not limited to, configurations that do not utilize base-attachment mechanisms.  
      As illustrated, in one embodiment, the base-attachment mechanisms  23  are positioned along the sides of the portion of the rider&#39;s leg  52  and so ensure the linkage systems, front  21   a - 21   a  and rear  22   a - 22   a , are secured on the sides of the portion of the rider&#39;s leg  52  to transmit the motion of rider leans to the gliding board  12  in a manner that is similar to a conventional snowboard strap binding. It is to be understood, however, that while the above-mentioned configuration is advantageous, the base-attachment mechanisms  23  and linkage systems, front  21   a - 21   a  and rear  22   a - 22   a , may be located in any desirable locations along the base  28 .  
      In the illustrative embodiment of  FIG. 4 , a linkage-length adjustment mechanism  38  may be included that enables the rider advantageously to adjust the length of the first linkage member  31  without using a tool. In one embodiment, the linkage-length adjustment mechanism  38  includes the first linkage member  31  that includes a striated slot  34  and an engagement component  41  that is striated on its underside so as to disengage and engage, utilizing a linkage-holding pin  42 , to which the linkage-release members  39  are hinged. As the rider raises and lowers the linkage-release members  39 , the engagement component  41  is disengaged and engaged, respectively, as the striations of the engagement component  41  cooperate with the striations of slot  34  to mate. In one embodiment, the linkage-holding pin  42  passes through a circular spacer  40 , the engagement component  41 , and is pivotably attached to the second linkage member  32  using a rivet or other suitable attachment configurations.  
      It is to be understood that the linkage-length adjustment mechanism  38  is not limited to the configuration described in this embodiment as any suitable configuration may be employed to achieve any desired performance characteristics including something as basic as having two or more attachment points as an integral part of the linkage member to enable length adjustment. In other embodiments, the linkage-length adjustment mechanism  38  does not protrude from the upper surface of the first linkage member  31  when engaged so as to make the configuration more streamline so that the rider does not accidentally bump the configuration and so the configuration better deflects snow, ice and other debris. Consequently, the particular configuration illustrated in this embodiment should not be construed as limiting.  
      In the illustrative embodiment shown in  FIGS. 1-9 , the ratchet-type fastener  44  is attached to the second linkage member  32  using a rivet or other suitable attachment configurations. The ratchet-type fastener  44  engages with striations on the tongue of the third linkage member  33 . In a manner similar to a conventional snowboard strap binding, tightening the second  32  and third  33  linkage members involves a relative sliding motion between the two linkage members by the kneeling rider, with one of the linkage members  32  sliding between the portion of the rider&#39;s leg  52  and the other linkage member  33 , to advantageously enable incremental adjustment of the linkage systems, front  21   a - 21   a  and rear  22   a - 22   a , by the kneeling rider so that the rider can achieve a desired feel in a manner similar to a conventional snowboard strap binding.  
      In the illustrative embodiment of  FIGS. 6   a - 6   d , the ratchet-type fastener  44  may advantageously include a ratchet lever  61  with ratchet teeth  62  molded to its toothed linkage-member-engagement end. As the ratchet lever  61  is raised by the rider, its ratchet teeth mate and rotate over the striations on the third linkage member  33  and in the process tighten incrementally the linkage system so that the kneeling rider can achieve a desired feel similar to a conventional snowboard strap binding. A ratchet release  63  engages with the third linkage member  33  striations when in its default position. The ratchet release&#39;s default position is flexibly maintained by ratchet spring  58  so as to prevent the ratchet-type fastener  44  from slipping and therefore loosening during tightening. In one embodiment, the ratchet spring  58  is formed from a spring steel, although it may be formed from any suitable material including, but not limited to, stainless steel.  
      As illustrated, the ratchet release  63  linkage-member-engagement end can be advantageously raised by the rider to disengage from the third linkage member  33  so as to enable the quick release of the linkage system from the portion of the rider&#39;s leg  52  to facilitate an exit by the rider from the linkage system in a manner similar to a conventional snowboard strap binding. As is to be appreciated, the ratchet release  63  provides a rider with the ability to readily disengage from the retaining device  14 , which may be very convenient. For example, the rider may wish to disengage the retaining device  14  when advancing along a slope or in a lift line. To do so, the rider simply pulls upward on the raised end of ratchet release  63 , which then causes the opposite end of ratchet release  63  to rise and disengage from the third linkage member  33 . The rider then pulls the third linkage member  33  out from the ratchet-type fastener  44 . The rider repeats this action with the other linkage system and the rider can then exit the retaining device in a manner similar to a conventional snowboard strap binding.  
      As illustrated, in one embodiment in particular, the ratchet release  63  and ratchet lever  61  are pivotably mounted to ratchet hinges  64  that are hinged to ratchet mounts  65  that are molded to second linkage member  32 . It is to be understood that any suitable configuration may be employed for the ratchet-type fastener  44  to achieve any desired performance characteristics including, but not limited to, lighter weight, increased strength, greater operational convenience, and/or better deflection of snow, ice, and debris. Consequently, the ratchet-type fastener  44 , while advantageous, is not limited to the particular configuration illustrated in this embodiment.  
      The ratchet-type fastener  44  may be formed from any suitable material or combination of materials to achieve a desired combination of strength, stiffness, weight and the like. For example, ratchet-type fastener  44  may be formed from one or more substantially rigid materials, such as aluminum, magnesium, titanium, carbon-reinforced plastic, stainless steel, polycarbonate, thermoplastic polyurethane and the like. It is to be appreciated, however, that the particular material or combination of materials employed for the ratchet-type fastener  44  may be chosen to achieve any desired performance characteristics.  
      The front  21   a - 21   a  and rear  22   a - 22   a  linkage systems, and front  20 , medial side  18 , and lateral side  19  stabilizers fit snugly against the portion of the rider&#39;s leg  52 , but do not prevent the portion of the rider&#39;s leg  52  from rolling therein. Consequently, this advantageous configuration does not inhibit roll within the retaining device  14  in a manner similar to a conventional snowboard strap binding. It is to be understood, however, that while advantageous, the retaining device  14  is not limited to the configuration illustrated in this embodiment and any suitable configuration may be employed.  
      The advantageous configuration of the front  21   a - 21   a  and rear  22   a - 22   a  linkage systems, and front  20 , medial side  18 , and lateral side  19  stabilizers in the illustrative embodiment shown in  FIGS. 1-9  effectively transmits the direction of lean of the rider through the retaining device  14  to the gliding board  12  to effect turning or braking in a manner similar to a conventional snowboard strap binding. It is to be appreciated, however, that while advantageous, other embodiments do not employ front and rear linkage systems. It is also to be appreciated that other embodiments employ linkage systems without stabilizing features. Similarly, one or more linkage systems may be employed with numerous types of bases, and are not limited to use with the illustrative embodiments disclosed herein.  
      In the illustrative embodiment shown in  FIGS. 1-9 , a base-positioning mechanism  68  is included, which in this embodiment includes the base rail  17 , gliding-board rail  13 , and quick-release mechanism  27 . The base rail  17  is integrally formed with the base  28  from one or more materials. The base rail  17  is configured to mate with gliding-board rail  13  by sliding into the gliding-board rail mating feature  25 . The base rail  17  and therefore the base  28 , when mated to the gliding-board rail  13 , can then be moved back and forth advantageously along the length of the gliding-board rail  13  so that the rider can adjust his or her position along a portion of the length of the gliding board  12  when the gliding-board rail  13  is affixed to the gliding board  12 . It is to be understood that the base rail  17  does not have to be integrally formed with the base  28  as illustrated, and that the base rail  17  can be of any suitable configuration including, but not limited to, it being formed separately from the base  28 . It is also to be understood that the base rail  17 , when formed separately from the base  28 , can be affixed to the base  28  using any suitable attachment configuration including adhesives, rivets, welding, bolts and the like.  
      The base  28  and base-positioning mechanism  68  will be subjected to significant lifting and torsional forces during riding and should be relatively lightweight to enhance rider performance. Thus, it may be desirable to form them from a relatively strong and lightweight material or combination of materials. For example, base  28  and the base-positioning mechanism  68  may be formed from carbon-reinforced plastic, glass-reinforced nylon, carbon-fiber reinforced nylon, polycarbonate, magnesium, stainless steel, titanium, hardened steel, hardened aluminum and the like to withstand the anticipated forces and performance requirements. It is to be appreciated, however, that the particular materials or combination of materials employed for base  28  and the base-positioning mechanism  68  may be chosen to achieve any desired performance characteristics.  
      In the illustrative embodiment shown in  FIGS. 1-9 , a quick-release mechanism  27  is shown that includes: a quick-release pin  59 , a quick-release pull ring  47 , a quick-release pin housing  60 , a pin spring  72 , and a nut  66 . The quick-release mechanism  27  enables the rider to conveniently adjust the position of the base  28  through locking positions  24  along the length of the gliding-board rail  13 . In one embodiment, the quick-release pin  59  has a quick-release pull ring  47  attached to it through a receiving hole in quick-release pin  59 . The rider can pull upwards on the quick-release pull ring  47  to disengage the quick-release pin  59  from the gliding-board rail  13 &#39;s lockable positions  24 .  
      Using the quick-release pull ring  47 , the quick-release pin  59  can then be lowered by the rider into its default position in one of gliding-board rail  13 &#39;s lockable positions  24 , with the quick-release pin  59 &#39;s default position held flexibly in place by pin spring  72 , which is located in the quick-release pin housing  60 . As illustrated, the quick-release pin housing  60  is attached to base rail  17  utilizing nut  66 . In one embodiment, the pin spring  72  is formed from a spring steel, although it may be formed from any suitable material including, but not limited to, stainless steel. As illustrated, the quick-release mechanism  27  is advantageously placed in well  35  so that the rider kneels on the base cushion member  36  and not directly on quick-release pin  59  for a more comfortable ride. It is to be understood that any suitable quick-release mechanism may be employed to achieve any desired convenience or performance characteristics, and that the quick-release mechanism is not limited to this embodiment. It is to be further understood that in other embodiments the retaining device  14  does not utilize a base cushion member, as other configurations are possible.  
      Using the base-positioning mechanism  68 , the rider can adjust his or her position forward and backward along the length of the gliding board  12  to enhance the performance of the gliding board  12 . Typically, this would mean a forward, or downhill, position for harder packed snow, so that the edge of the gliding board  12  can more effectively carve into the snow surface, and a backward, or uphill, position for powdery snow so that the front end of the gliding board  12  can more easily ride up and so better float over light snow. Since the rider is kneeling, he or she cannot lean backward or forward as much as a standing rider to lift or dive, respectively, the forward end of the gliding board  12 . Consequently, a mechanism for adjusting the rider&#39;s position along the length of the gliding board  12  is especially advantageous for a kneeling rider. While advantageous, other embodiments of the retaining device  14  do not enable the rider to adjust his or her position along a portion of the length of the gliding board  12 , and still further embodiments may utilize other suitable configurations for adjusting the rider&#39;s position along a portion of the length of the gliding board to achieve any desired performance characteristics.  
      In the illustrative embodiment shown in  FIGS. 1-9 , the gliding-board rail  13  is affixed to the gliding board  12  using screws  70  that are inserted through rail screw holes  51  to achieve an attachment similar to a conventional snowboard strap binding. It is to be understood that any suitable attachment configuration may be employed to affix the gliding-board rail  13  to the gliding board  12  including an adhesive or a combination of an adhesive and screws, and so the attachment is not limited to the particular configuration illustrated in this embodiment.  
      One desirable characteristic of the base  28  of the retaining device  14  ( FIGS. 1-9 ) is its ability to be employed to secure a kneeling rider to any gliding board. In this regard, the embodiment shown in the figures employs a universal base  28  that is configured to be mounted to any type of gliding board, without requiring that the base be configured for use with a particular gliding board.  
      Another desirable characteristic of the retaining device  14  ( FIGS. 1-9 ) is that it may be positioned on the surface of the gliding board  12  according to each rider&#39;s personal preference. For example some riders, who spend most of their time on hard-packed snow, may prefer a more forward position so the edge of the gliding board can be more aggressively carved into the harder snow. Other riders, who spend most of their time on soft powdery snow, may prefer a more rearward position so the front edge of the gliding board better climbs up and floats over the top of lighter snow.  
      In the illustrative embodiment shown in  FIGS. 1-9 , medial side stabilizer  18 , lateral side stabilizer  19 , and front stabilizer  20 , are a single homogeneous piece that is affixed to the base  28  using screws that pass through the underside of base  28 , and are threaded into receiving holes in medial side stabilizer  18  and lateral side stabilizer  19  at attachment points  29 . Base cushion member  36  is affixed using an adhesive to the base  28  to ensure the portion of the rider&#39;s leg  52  does not come into contact with the base  28 , which in this embodiment may cause discomfort. The stabilizers are advantageously configured to prevent a buildup of snow, ice, and other debris at the front of the retaining device  14 , and support the rider&#39;s side and front positions on the base  28 . In this embodiment, because the stabilizers are more rigid than the linkage systems, front  21   a - 21   a  and rear  22   a - 22   a , the stabilizers can be more responsive than the linkage systems, front  21   a - 21   a  and rear  22   a - 22   a , in transmitting the torsional forces exerted on them to the gliding board  12 .  
      The medial side stabilizer  18 , lateral side stabilizer  19 , and front stabilizer  20  may be formed from any suitable material or combination of materials to achieve a desired combination of strength, stiffness, weight and the like. For example, the medial side stabilizer  18 , lateral side stabilizer  19 , and front stabilizer  20  may be formed from a substantially rigid material, such as carbon-reinforced plastic, glass-reinforced nylon, carbon-fiber reinforced nylon, polycarbonate, magnesium, stainless steel, titanium, hardened steel, hardened aluminum, thermoplastic polyurethane and the like. It is to be appreciated, however, that the particular materials employed for the medial side stabilizer  18 , lateral side stabilizer  19 , and front stabilizer  20  may be chosen to achieve any desired performance characteristics.  
      It is to be understood that while the stabilizer configuration illustrated in this embodiment is advantageous to achieve a desired degree of stiffness and/or torsional stability, a retaining device without stabilizers may be employed, or the stabilizers may be employed as two or more unique pieces made from one or more materials, or the stabilizers may be affixed using any suitable attachment configuration including adhesives, rivets, welding, bolts and the like, or the stabilizers may be integrally formed with the base  28  from one or more materials, or a configuration utilizing one or more stabilizers may be employed. Consequently, the particular configuration illustrated in this embodiment should not be construed as limiting.  
      The retaining device  14  has an upper portion that in one embodiment is the base cushion member  36 . The retaining device  14  has a bottom portion that in one embodiment includes the base rail  17  and other aspects of the retaining device  14  that may be positioned on the same side of the base  28  as the base rail  17  in the illustrative embodiment shown in  FIGS. 1-9 . It is to be understood that the upper portion may be of any suitable configuration including, but not limited to, the base cushion member  36  configured at an incline that may range from 5 to 35 degrees with respect to the base  28  such that the base cushion member  36  is configured to slope from the rear end of base  28  to the front end of base  28 .  
      It is to be further understood that any suitable structures, members and the like, or any combination thereof, may be utilized for the upper portion of the retaining device  14 , and that the structures, members and the like may be made from any suitable material, or combination of materials, to achieve any desired performance or convenience characteristics. Consequently, the particular configurations illustrated in this embodiment should not be construed as limiting.  
      It is to be understood in one embodiment the bottom portion of retaining device  14  advantageously includes the base rail  17  and the gliding-board rail  13 . While advantageous, any suitable configuration for the bottom portion of retaining device  14  may be utilized including, but not limited to, a shock-absorbing suspension system layered directly between gliding-board rail  13  and gliding board  12 , or a shock-absorbing suspension system layered between base  28  and gliding board  12  without the employment of gliding-board rail  13  and base rail  17 , or no shock-absorbing system with base  28  attached directly to gliding board  12 . Consequently, the particular configurations illustrated in this embodiment should not be construed as limiting.  
      In the illustrative embodiment shown in  FIGS. 1-9 , a hook-and-loop material  37  is affixed using an adhesive to the underside of the front  20 , medial side  18 , and lateral side  19  stabilizers, and configured to engage the demountably attached stabilizer cushion member  56  employed on the underside of the front  20 , medial side  18 , and lateral side  19  stabilizers. It is to be understood that while this configuration is advantageous, stabilizer cushion member  56  may be employed in different regions of the retaining device  14 , or may be affixed using any suitable attachment configuration from something as simple as a permanent adhesion to something as complex as sliding mounts that enable sundry sizes of removable cushion member to be slid in and out. Consequently, the particular configurations illustrated in this embodiment should not be construed as limiting,  
      In the illustrative embodiment shown in  FIGS. 1-9 , only one of the retaining devices  14  has been shown, but it is understood that in the illustrative configuration a pair of the retaining devices  14  will be used by the rider.  
      In another illustrative embodiment shown in  FIG. 10 , a retaining device  214  is shown that is identical to the retaining device  14  in the illustrative embodiment shown in  FIGS. 1-9 , except that the retaining device  214  is modified to support two of the kneeling rider&#39;s legs therein. Since the retaining device  214  is substantially identical to the retaining device  14 , the retaining device  214  will not be discussed or illustrated in detail herein. Rather, the following description will focus mainly on the differences. Moreover, it will be apparent to those skilled in the art that most of the descriptions of the retaining device  14  apply to the retaining device  214 .  
      In a manner that is substantially identical to the. embodiment shown above in  FIGS. 1-9 , the retaining device  214  of the illustrative embodiment shown in  FIG. 10  includes a medial side located on the same side of the base  228  as a medial side stabilizer  182 , a lateral side located on the same side of the base  228  as a lateral side stabilizer  219 , a front end located on the same end of the base  228  as a front stabilizer  220 , and a rear end located on the end of the base  228  that opposes the front end of the base  228 .  
      The retaining device  214  of the illustrative embodiment shown in  FIG. 10  utilizes a base-positioning mechanism (not shown) that is identical to the version of the base-positioning mechanism  68  of the illustrative embodiment shown in  FIGS. 1-9 , except that in the illustrative embodiment shown in  FIG. 10 a  pair of base-positioning mechanisms is utilized to support two of the rider&#39;s legs. Accordingly, the pair of base-positioning mechanisms of the illustrative embodiment shown in  FIG. 10  will not be discussed or illustrated in detail herein.  
      Base  228  of the illustrative embodiment shown in  FIG. 10  is identical to the version of base  28  of the illustrative embodiment shown in  FIGS. 1-9 , except that the base  228  has been widened to support two legs, and the base  228  includes a pair of wells  352  configured to engage the pair of base-positioning mechanisms. Accordingly, the base  228  will not be discussed or illustrated in detail herein.  
      The pair of wells  352  of the illustrative embodiment shown in  FIG. 10  is identical to the version of the well  35  of the retaining device  14  of the illustrative embodiment shown in  FIGS. 1-9 , except that a paired configuration is utilized. Accordingly, the pair of wells  352  will not be discussed or illustrated in detail herein.  
      The pair of base-positioning mechanisms of the illustrative embodiment shown in  FIG. 10  is affixed to the gliding board (not shown) utilizing an attachment configuration identical to the version utilized in the illustrative embodiment shown in  FIGS. 1-9 , except that a paired configuration is utilized. Accordingly, the attachment configuration for attaching the gliding board to the pair of base-positioning mechanisms of the illustrative embodiment shown in  FIG. 10  will not be discussed or illustrated in detail herein.  
      The front stabilizer  220  of the retaining device  214  of the illustrative embodiment shown in  FIG. 10  is identical to the version of the front stabilizer  20  of the illustrative embodiment shown in  FIGS. 1-9 , except that the front stabilizer  220  is wider to support two legs. Accordingly, the front stabilizer  220  of the illustrative embodiment shown in  FIG. 10  will not be discussed or illustrated in detail herein.  
      The stabilizer cushion member (not shown) utilized under front stabilizer  220  of the retaining device  214  of the illustrative embodiment shown in  FIG. 10  is identical to the version of the stabilizer cushion member  56  utilized under front stabilizer  20  of the illustrative embodiment shown in  FIGS. 1-9 , except that the stabilizer cushion member utilized under front stabilizer  220  is wider to support two legs. Accordingly, the stabilizer cushion member utilized under front stabilizer  220  of the illustrative embodiment shown in  FIG. 10  will not be discussed or illustrated in detail herein.  
      The hook-and-loop material (not shown) of the illustrative embodiment shown in  FIG. 10  positioned on the underside of the front stabilizer  220  is identical to the version of the hook-and-loop material  37  of the illustrative embodiment shown in  FIGS. 1-9 , except that it is wider to accommodate the increased width required by a pair of rider legs. Accordingly, the hook-and-loop material of the illustrative embodiment shown in  FIG. 10  will not be discussed or illustrated in detail herein.  
      The retaining device  214  in the illustrative embodiment shown in  FIG. 10  utilizes the identical front  21   a - 21   a  and rear  22   a - 22   a  linkage systems as utilized by the retaining device  14  of the illustrative embodiment shown in  FIGS. 1-9 , except that the front and rear linkage systems (not shown) utilized by the retaining device  214  have been slightly modified so that the front and rear linkage systems utilized by the retaining device  214  are greater in length to accommodate two of the rider&#39;s legs therein. Accordingly, the front and rear linkage systems of the illustrative embodiment shown in  FIG. 10  will not be discussed or illustrated in detail herein. The base-attachment mechanism  232  of retaining device  214  is identical to the version of the base-attachment mechanism  23  of retaining device  14 . Accordingly, the base-attachment mechanism  232  of the illustrative embodiment shown in  FIG. 10  will not be discussed or illustrated in detail herein.  
      Having described several illustrative embodiments of the invention, various modifications and improvements will readily occur to those skilled in the art. Such modifications and improvements are intended to be within the scope of the invention. Accordingly, the foregoing description is by way of example only and is not intended to be limiting. The invention is limited only as defined in the following claims and the equivalents thereto.