Patent ID: 8496007

Claim:
An asymmetrical and complexly-curved, passive, device for relieving back and spinal postural mechanical pain, comprising: a) a top surface; b) a first end and a second end, parallel to each other; c) a left side and a right side, parallel to each other and perpendicular to and level with the first end and second end; d) a long axis between the first end and the second end; e) a wide axis between the right side and the left side; f) a central, concave groove, running parallel with and in the long axis and from the first end to the second end, and both centered in and extending across not less than one-fifth and not more than one-third of the distance of the wide axis; g) a convex asymmetric longitudinal curvature to the top surface along the long axis that continuously varies from a relatively large radius of curvature adjacent the first end to a relatively small radius of curvature adjacent the second end; h) a complex, symmetric, latitudinal, curvature to the top surface along the wide axis that continuously varies, which begins with a shallow radius of convex curvature at the left side, increases to a moderate radius of convex curvature, smoothes back into a shallow radius of convex curvature, without creating linear pressure lines or pressure points, then at the beginning of the central, concave groove shifts through a sharp convex curvature to a moderate radius of concave curvature that is centered at a point vertical to the middle of the central, concave groove, shifts again through sharp convex curvature at the end of the central, concave groove, smoothes back into a shallow radius of convex curvature, increases to a moderate radius of convex curvature, and ends with a shallow radius of convex curvature at the right side, wherein the device is configured such that a user's shoulders make contact with and extend beyond the sides, thus spreading the complex vectors of downward gravitational pull and sideways connective frictions both over a curved, and varying, area.