초록 ▼

A parallel ski training or exercise apparatus is described. The ski training device provides the combination of parallel motion, edging, and weight shifting that characterizes downhill parallel skiing. Two foot platforms are mounted on a base, on independent rotation axes centered about the balls of

A parallel ski training or exercise apparatus is described. The ski training device provides the combination of parallel motion, edging, and weight shifting that characterizes downhill parallel skiing. Two foot platforms are mounted on a base, on independent rotation axes centered about the balls of the user's feet. The foot platforms are constrained to rotate together, i.e. their longitudinal axes remain parallel. The foot platforms can tilt from side to side to simulate the edging motion of downhill parallel skiing. Varying amounts of resistance to rotation and to tilting can be obtained by changing the springs or other devices that bias the foot platforms to straight-ahead and level alignment. The base of the parallel ski training device can be tilted to an angle by a support having a circular arc or hemispherical shape. With the front of the base raised, the user's ankles assume the leaning forward attitude that is used in parallel skiing. Rocking of the base from side to side simulates the change in attitude that occurs as a skier changes direction on a downhill slope.

대표청구항 ▼

1. An exercise apparatus comprising:a base platform having a bottom surface and a flat top face, front and rear edges, left and right edges, and a longitudinal centerline equidistant from the left and right edges;first and second rotation members having top faces and longitudinal axes and, where eac

1. An exercise apparatus comprising:a base platform having a bottom surface and a flat top face, front and rear edges, left and right edges, and a longitudinal centerline equidistant from the left and right edges;first and second rotation members having top faces and longitudinal axes and, where each rotation members is independently rotatably mounted to the top face of the base platform;means to rigidly constrain the rotation of the rotation members so that their longitudinal axes always remain parallel; andfirst and second foot platforms tiltably mounted to the first and second rotation member top faces respectively, where the foot platform tilt axes and the rotation member longitudinal axis are parallel. 2. An exercise apparatus as described in claim 1, where the foot platform tilt axes are located between the rotation member top faces and the foot platforms. 3. An exercise apparatus as described in claim 1, further comprising means to bias the rotation members rotation angle to the position where the line connecting the two rotation axes is perpendicular to the rotation member longitudinal axes. 4. An exercise apparatus as described in claim 1, where the means to constrain the rotation of the rotation members comprises a tie bar having a longitudinal axis and where the tie bar is rotatably fastened to both rotation members. 5. An exercise apparatus as described in claim 4, further comprising means to bias each foot platform tilt angle to the position where the top face of the foot platform is parallel to the top face of the base platform. 6. An exercise apparatus as described in claim 1, where the base platform rear edge is curved; and further comprising:a pedestal having a hemispherical or circular arc or semi-conical or semi-round shape; andwhere the pedestal is located on the base platform bottom surface, on the base platform longitudinal centerline, closer to the base platform front edge than to its rear edge, so that the front edge of the base platform is raised and the base platform is rockable from right to left. 7. An exercise apparatus as described in claim 1, wherein the bottom surface of the base platform is shaped so that the front edge of the base platform is raised and the base platform is rockable from right to left. 8. An exercise apparatus as described in claim 6, where the foot platform tilt axes are located between the rotation member top faces and the foot platforms. 9. An exercise apparatus as described in claim 6, further comprising means to bias the rotation members rotation angle to the position where the line connecting the two rotation axes is perpendicular to the rotation member longitudinal axes. 10. An exercise apparatus as described in claim 6, where the means to constrain the rotation of the rotation members comprises a tie bar having a longitudinal axis and where the tie bar is rotatably fastened to both rotation members. 11. An exercise apparatus as described in claim 10, further comprising means to bias each foot platform tilt angle to the position where the top face of the foot platform is parallel to the top face of the base platform. 12. An exercise apparatus as described in claim 2, further comprising compression springs interposed between the top faces of the rotation members and bottom faces of the foot platforms so as to bias each foot platform tilt angle to the position where the top face of the foot platform is parallel to the top face of the base platform. 13. An exercise apparatus as described in claim 3, where the means to bias the rotation angle comprises extension springs. 14. An exercise apparatus as described in claim 4, further comprising:foot platform tilt axes, each comprising eyes fastened to the bottom face of a foot platform, eyes fastened to the top face of a rotation member, and a shaft passing through all of the eyes so that the longitudinal axes of the shafts are parallel with the longitudinal axes of the rotation members;compression springs interposed between th e top faces of the rotation members and bottom faces of the foot platforms so as to bias each foot platform tilt angle to the position where the top face of the foot platform is parallel to the top face of the base platform;extension springs arranged to bias the rotation members rotation angle to the position where the line connecting the two rotation axes is perpendicular to the rotation member longitudinal axes; anda pedestal having a hemispherical or circular arc or semi-conical or semi-round shape, where the pedestal is located on the base platform bottom surface, on the base platform longitudinal centerline, closer to the base platform front edge than to its rear edge, so that the front edge of the base platform is raised and the base platform is rockable from right to left. 15. An exercise apparatus as described in claim 14, where the rotation member rotation axes are located proximately below the balls of the user's feet and further comprising:rotation member support means located between the rotation member bottom faces and the base platform top face, and located proximately below the heels of the user's feet.