초록 ▼

A portable device for performing exercises, including: two independent tracks with a physical connection between them, and a movable platform on each track. The device is adapted to enable a user to move the movable platform on both tracks simultaneously by exerting a physical force on each platform

A portable device for performing exercises, including: two independent tracks with a physical connection between them, and a movable platform on each track. The device is adapted to enable a user to move the movable platform on both tracks simultaneously by exerting a physical force on each platform simultaneously, and the physical force required to move each platform by the same distance is independently controllable for each platform.

대표청구항 ▼

1. A portable device for performing exercises, comprising: two independent tracks with a physical connection between them, each track having a first end and a second opposite end;a pair of movable platforms, one platform on each track, each platform being selectively connectable to both first and se

1. A portable device for performing exercises, comprising: two independent tracks with a physical connection between them, each track having a first end and a second opposite end;a pair of movable platforms, one platform on each track, each platform being selectively connectable to both first and second ends by one or more elastic members, wherein each platform has a first attachment element and an opposing second attachment element extending downward from opposite ends of the platform in a spaced apart relation, each of the first and second attachment elements having a series of spaced openings therethrough, wherein the elastic members are mounted beneath each platform to and straight between the first and second spaced attachment elements through the openings, each elastic resistance member having one end connectable to the first attachment element through one of the openings and a second end connectable to the second element through another one of the openings when the resistance member is not in use; andeach end of any one of the elastic resistance members is configured to be removably pulled further through the one of the first or second attachment elements in one direction and fastened to an end of the track closest to the platform element through which the end of the elastic member has been pulled, and wherein at least one other elastic member is configured to be removably passed through the other one of the first or second attachment elements in an opposite direction and fastened to the end of the frame closest to the other one of the first or second elements such that the platform can be neutrally positioned between the opposite ends of the tracks. 2. A device according to claim 1, wherein each of said tracks includes two parallel rails upon which the platform rides and wherein the tracks are connected parallel to each other. 3. A device according to claim 2, wherein said tracks are connected with an offset between their starting points along their longitudinal axis. 4. A device according to claim 1, wherein said tracks have the same length. 5. A device according to claim 1, wherein said tracks differ in length. 6. A device according to claim 1, wherein said tracks form an angle greater than zero relative to each other. 7. A device according to claim 1, wherein the platforms are adapted to glide over said tracks. 8. A device according to claim 1, wherein the platforms comprise wheels to move on said tracks. 9. A device according to claim 1, wherein the track length available for each platform to move on is selectable. 10. A device according to claim 1, wherein the track length available to each platform may be set to zero. 11. A device according to claim 1, further comprising more than one platform on at least one track. 12. A device according to claim 1, wherein each track is encased in a frame. 13. A device according to claim 12, wherein said frame comprises a widened area that is wide enough for a user to place a foot. 14. A device according to claim 1, wherein both tracks are encased in one frame. 15. A portable exercise device comprising: a frame;two independent tracks attached to the frame, each track having a first end and a second opposite end;a pair of movable platforms positioned side by side in the frame, with one platform riding on each track, each platform being selectively connectable by a user to both first and second ends of its track by two or more resistance mediums;wherein each platform carries at least one resistance medium having one end connectable to the platform and a second end connectable to one of the first and second ends of the frame and at least one other resistance medium having one other end connectable to the platform and the other end connectable to the other one of the ends of the frame to neutrally position the platform between the ends;wherein each resistance medium is stored under and carried by the platform, in parallel to a top panel of the platform when not in use, and wherein the platform is provided with two spaced apart platform frame members extending downward from opposite ends of the platform, each frame member having a sequence of keyhole shaped platform attaching elements in the form of keyhole shaped openings, and wherein each resistance medium passes straight through both of the platform frame members and has an equilibrium length equal or shorter than the distance between the two spaced apart sequences to allow storage of each resistance medium beneath the platform by connecting one end of each of the resistance mediums to an attaching element of one of the two sequences of platform attaching elements and the other end of each of the resistance mediums to another attaching element of the other sequence of platform attaching elements; andwherein each end of any one of the resistance mediums is configured to be removably pulled further through the one of the first or second attachment elements in one direction and fastened to an end of the track closest to the platform element through which the end of the resistance medium has been pulled, and wherein at least one other resistance medium is configured to be removably passed through the other one of the first or second attachment elements in an opposite direction and fastened to the end of the frame closest to the other one of the first or second elements such that the platform can be neutrally positioned between the opposite ends of the track. 16. The device according to claim 15 wherein the resistance mediums are selected from the group consisting of springs, elastic cords, elastic ropes and elastic bands. 17. An exercise device comprising: a frame having two opposite ends and two tracks each extending between the ends of the frame,two platforms movably mounted on the tracks such as to allow movement of the platforms between the opposite ends of the frame; andat least one resistance medium having one end connectable to one of the two platforms and a second end connectable to one of said two opposite ends of the frame and at least one other resistance medium having one other end connectable to the one platform and a second other end connectable to the other one of said two opposite ends of the frame such that the one platform is neutrally positioned between the opposite ends when the mediums are connected between the one platform and the ends of the frame, wherein each of the platforms is provided with two spaced apart sequences of platform attaching elements, and wherein each resistance medium has an equilibrium length equal or shorter than the straight distance between the two spaced apart sequences to allow storage of each resistance medium beneath its platform by connecting one end of each of the resistance mediums to an attaching element of one of the two sequences of platform attaching elements and the other end of each of the resistance mediums to another attaching element of the other sequence of platform attaching elements. 18. The device of claim 17 wherein each track has a cover and each platform rides on a different one of the tracks. 19. The device of claim 17 wherein the tracks are parallel. 20. The device of claim 17 wherein each resistance medium is stored under its platform in parallel to a top panel of that platform, when not in use. 21. The device of claim 17 wherein each resistance medium is a stretchable elastic cord. 22. The device of claim 17 wherein each resistance medium includes an elongated elastic member having opposite ends and a rigid conic shaped terminator fastened to each end of the elastic member. 23. The device of claim 17 wherein each of the platforms has a set of wheels for moving the platform along the frame between the ends. 24. The device according to claim 17 wherein at least one of the tracks comprises a cover, said cover at least partially covering at least one part of the one of the two platforms. 25. The device of claim 24 wherein the cover extends over one or more of the wheels to prevent inadvertent removal of the platform from the track on which the platform is mounted. 26. An exercise device according to claim 24 wherein each end of each resistance medium may be removably pulled further through the one of the first or second elements and fastened to an end of the frame closest to the platform element through which the end of the resistance medium has been pulled, and wherein at least one other resistance medium is removably passed through the other one of the first or second elements and fastened to the end of the frame closest to the other one of the first or second elements such that the platform can be neutrally positioned between the opposite ends of the frame when two or more resistance mediums are connected between the platform and the ends of the frame.