Unassisted lower torso strengthening and stretching device
AssigneeTarrenn Corporation
InventorJohn Christianson
Life of this patent
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Abstract
A device for stretching and strengthening the muscles of the lower back and legs of a person in a supine position. The device includes a board with straps to restrain the pelvis of the person. A rope and pulley system, operated by the person by pulling and releasing extends between the feet and to a support above the head. The rope is pulled by the user to raise the legs, and additional mechanical advantage is employed as the rope is gradually released to lower the legs.
Claims4
An unassisted lower torso strengthening and stretching device for a person comprising means for restraining the pelvis of the person while allowing upward tilting of the legs, and means operable by the user for raising and lowering the legs to a position where the legs are substantially perpendicular to the torso, said last mentioned means comprising a first pulley, means for supporting said first pulley above the person, a second pulley connected to the feet of the person, and a line having a free end operable by the user to raise and lower the legs, said line passing over the first pulley, around said second pulley, and the other end of said line being secured to said first pulley, said first pulley comprising means for allowing rotation thereof while pulling on said line, and means for preventing rotation thereof upon release of said line.
Dependencies are inferred from the claim text.