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Combination ski-snowboard devices reversibly configured in both: a ski configuration comprising two skis each with both an inside and outside edge and a ski binding mounting systems, and in a snowboard configuration having two outside edges and two binding mounting systems. Methods for converting sk

Combination ski-snowboard devices reversibly configured in both: a ski configuration comprising two skis each with both an inside and outside edge and a ski binding mounting systems, and in a snowboard configuration having two outside edges and two binding mounting systems. Methods for converting ski-snowboard devices from a snowboard configuration to a ski configuration and from a ski configuration to a snowboard configuration.

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1. A ski-snowboard combination device comprising: a first gliding board having an first edge having a substantially concave shape;a second gliding board having a first edge having a substantially concave shape;a binding mounting system mounted on the first gliding board and the second gliding board,

1. A ski-snowboard combination device comprising: a first gliding board having an first edge having a substantially concave shape;a second gliding board having a first edge having a substantially concave shape;a binding mounting system mounted on the first gliding board and the second gliding board, the binding mounting system having: a top plate; anda bottom plate with a torque-sensitive release mechanism and a release-setting gauge, wherein the binding mounting system is releasable upon in the event of a threshold level of torque applied to the torque-sensitive release mechanism; anda fastening device comprising a first part and a second part, the first part mounted on the first gliding board and the second part mounted on the second gliding board, the fastening device being configured to reversibly affix the inside edge of the first gliding board to the inside edge of the second gliding board, wherein when the inside edge of the first gliding board and the inside edge of the second gliding board form an opening with two convex sides,wherein the binding mounting system is reconfigurable between a ski binding mounting system and a snowboard binding mounting system. 2. The ski-snowboard combination device of claim 1, wherein the binding mounting system further comprising: a first ski binding system coupled with the first gliding board;a second ski binding system coupled with the second gliding board; anda snowboard binding system coupled with the first gliding board and the second gliding board. 3. The ski-snowboard combination device of claim 1, the first gliding board further having a second edge having a substantially concave shape, and the second gliding board further having a second edge having a substantially concave shape. 4. The ski-snowboard combination device of claim 1, wherein both the first gliding board central zone and the second gliding board central zone have a substantially flat bottom surface and comprise a substantially axial member having a first terminal end and a second terminal end separated by a binding mounting area on their top surface. 5. The ski-snowboard combination device of claim 1, wherein the binding mounting system further comprising: a first ski binding mounting system coupled to the mounting area of the first gliding board and configured to affix a ski binding thereto in a position facing the first terminal end of the first gliding board;a second ski binding mounting system coupled to the mounting area of the second gliding board and configured to affix a ski binding thereto in a position facing the first terminal end of the second gliding board;a first one-half of a front foot snowboard binding mounting system coupled to the mounting area of the first gliding board;a second one-half of a front foot snowboard binding mounting system coupled to the mounting area of the second gliding board;a first one-half of a back foot snowboard binding mounting system coupled to the mounting area of the first gliding board; anda second one-half of a back foot snowboard binding mounting system coupled to the mounting area of the second gliding board,wherein the first one-half of the front foot snowboard binding mounting system and the second one-half of the front foot snowboard mounting system are configured to affix a first snowboard binding to the first gliding board and the second gliding board in a direction substantially perpendicular to the axial length of the first gliding board and second gliding board, andwherein the first one-half of the back foot snowboard binding mounting system and the second one-half of the back foot snowboard mounting system are configured to affix a second snowboard binding to the first gliding board and the second gliding board in a direction substantially perpendicular to the axial length of the first gliding board and second gliding board. 6. The ski-snowboard combination device of claim 5, each of the first ski binding mounting system and the second ski binding mounting system further comprises: a bottom plate having a disk-accepting aperture disposed therein, the bottom plate being configured to be non-releasably coupled with a gliding board; anda top plate having a disk disposed on the bottom-side surface of the top plate and a top-side surface configured to be non-releasably coupled with a boot,wherein the disk is configured to be releasably aligned with the disk-accepting aperture of the bottom plate in the event of the threshold level of torque applied to the disk. 7. The ski-snowboard combination device of claim 1 wherein the bottom plate further comprises: a set screw accessible from the outside of the bottom plate in mechanical communication with the torque-sensitive release mechanism and configured for adjusting the threshold torque,wherein the torque-sensitive release mechanism housed within the bottom plate and aligned with the disk-accepting aperture to interact with the torque-sensitive release mechanism. 8. The ski-snowboard combination device of claim 4, further comprising: a tip clip coupled to the first terminal end of the first gliding board;a tip peg coupled with the first terminal end of the second gliding board;a tail clip coupled to the second terminal end of the first gliding board; anda tail peg coupled with the second terminal end of the second gliding board,wherein the tip clip is configured to latch onto the tip peg and the tail clip is configured to latch onto the tail peg, thereby further reversibly affixing the inside edge of the first gliding board to the inside edge of the second gliding board. 9. The ski-snowboard combination device of claim 4, further comprising: a jacket configured to fit over a portion of the first terminal end of the first gliding board and the first terminal end of the second gliding board when the fastening device reversibly affixes the inside edge of the first gliding board to the inside edge of the second gliding board. 10. A ski-snowboard combination device comprising: a first gliding board having an outer edge configured for use as a snowboard and having an inner edge configured for use as a downhill ski;a second gliding board being a reciprocal mirror image shape from the first gliding board such that the second gliding board also has an outer edge configured for use as a snowboard and having an inner edge configured for use as a downhill ski;a binding mounting system mounted on the first gliding board and the second gliding board, the binding mounting system having: a top plate; anda bottom plate with a torque-sensitive release mechanism and a release-setting gauge, wherein the binding mounting system is releasable upon in the event of a threshold level of torque applied to the torque-sensitive release mechanism; anda fastening device configured to affix the first gliding board to the second gliding board, whereby the inner edge of the first gliding board is pressed against the inner edge of the second gliding board,wherein the binding mounting system is reconfigurable between a ski binding mounting system and a snowboard binding mounting system. 11. The ski-snowboard combination device of claim 10, wherein when the inner edge of the first gliding board and the inner edge of the second gliding board forms an opening with two convex sides when the fastening device affixes the first gliding board to the second gliding board. 12. The ski-snowboard combination device of claim 10, wherein both the first gliding board and the second gliding board have a substantially flat bottom surface and comprise a substantially axial member having a first terminal end and a second terminal end separated by a binding mounting area on their top surface. 13. The ski-snowboard combination device of claim 10, wherein the binding mounting system further comprising: a first ski binding mounting system coupled to the mounting area of the first gliding board and configured to affix a ski binding thereto in a position facing the first terminal end of the first gliding board;a second ski binding mounting system coupled to the mounting area of the second gliding board and configured to affix a ski binding thereto in a position facing the first terminal end of the second gliding board;a first one-half of a front foot snowboard binding mounting system coupled to the mounting area of the first gliding board;a second one-half of a front foot snowboard binding mounting system coupled to the mounting area of the second gliding board;a first one-half of a back foot snowboard binding mounting system coupled to the mounting area of the first gliding board; anda second one-half of a back foot snowboard binding mounting system coupled to the mounting area of the second gliding board,wherein the first one-half of the front foot snowboard binding mounting system and the second one-half of the front foot snowboard mounting system are configured to affix a first snowboard binding to the first gliding board and the second gliding board in a direction substantially perpendicular to the axial length of the first gliding board and second gliding board, andwherein the first one-half of the back foot snowboard binding mounting system and the second one-half of the back foot snowboard mounting system are configured to affix a second snowboard binding to the first gliding board and the second gliding board in a direction substantially perpendicular to the axial length of the first gliding board and second gliding board. 14. The ski-snowboard combination device of claim 13, each of the first ski binding mounting system and the second ski binding mounting system further comprises: a bottom plate having a disk-accepting aperture disposed therein, the bottom plate being configured to be non-releasably coupled with a gliding board; anda top plate having a disk disposed on the bottom-side surface of the top plate and a top-side surface configured to be non-releasably coupled with a boot,wherein the disk is configured to be releasably aligned with the disk-accepting aperture of the bottom plate in the event of the threshold level of torque applied to the disk. 15. The ski-snowboard combination device of claim 10, wherein the bottom plate further comprises: a set screw accessible from the outside of the bottom plate in mechanical communication with the torque-sensitive release mechanism and configured for adjusting the threshold torque,wherein the torque-sensitive release mechanism housed within the bottom plate and aligned with the disk-accepting aperture to interact with the torque-sensitive release mechanism. 16. The ski-snowboard combination device of claim 12, further comprising: a tip clip coupled to the first terminal end of the first gliding board;a tip peg coupled with the first terminal end of the second gliding board;a tail clip coupled to the second terminal end of the first gliding board; anda tail peg coupled with the second terminal end of the second gliding board,wherein the tip clip is configured to latch onto the tip peg and the tail clip is configured to latch onto the tail peg, thereby further reversibly affixing the inner edge of the first gliding board to the inner edge of the second gliding board. 17. The ski-snowboard combination device of claim 12, further comprising: a first jacket configured to fit over a portion of the first terminal end of the first gliding board and the first terminal end of the second gliding board when the fastening device reversibly affixes the inner edge of the first gliding board to the inner edge of the second gliding board; anda second jacket configured to fit over a portion of the second terminal end of the first gliding board and the second terminal end of the second gliding board when the fastening device further reversibly affixes the inner edge of the first gliding board to the inner edge of the second gliding board. 18. A ski-snowboard combination device comprising: a first gliding board having a first ski binding mounting system mounted on the first gliding board;a second gliding board having a second ski binding mounting system mounted on the second gliding board;a fastening device comprising a first part and a second part, the first part mounted on the first gliding board and the second part mounted on the second gliding board, the fastening device being configured to reversibly affix the inside edge of the first gliding board to the inside edge of the second gliding board, wherein when the inside edge of the first gliding board and the inside edge of the second gliding board form an opening with two convex sides;a bottom plate being configured to be non-releasably coupled with each of the gliding board, the bottom plate having: a torque-sensitive release mechanism; anda release-setting gauge,wherein the bottom plate is aligned with a disk-accepting aperture disposed therein; anda top plate having a disk disposed on a bottom-side surface of the top plate and a top-side surface configured to be non-releasably coupled with a boot,wherein the disk is configured to be releasably aligned with the disk-accepting aperture of the bottom plate in the event of a threshold level applied to the disk. 19. The ski-snowboard combination device of claim 1, wherein the release setting gauge is configured for displaying a quantified representation of the threshold torque and visible from the outside of the bottom plate. 20. The ski-snowboard combination device of claim 10, wherein the release setting gauge is configured for displaying a quantified representation of the threshold torque and visible from the outside of the bottom plate.