Abstract: A spring seat for accommodating the depending ischial tuberosities and to reduce the load on them by supporting the ischial tuberosities at a lower level than the supporting means under the buttocks of a seated occupant which take on a significant portion of the load.

Abstract: A prestressed sinuous spring for furniture springing in which the upwardly spanned are or contour is loaded and depressed to a modified depth and contour by incorporating and selectively positioning a reinforcing link with the prestressed sinuous spring to resist tension and bending forces to which the prestressed sinuous spring is subjected upon loading between the ends thereof.

Abstract: A chair having a seat and a seat back with said seat back having spaced-apart upright members to accommodate the back of a chair occupant in which spaced springy support means are provided in selected regions against which the chair occupant contacts to urge the rib cage and chest outwardly and urge the lumbar vertebral arch rearward, to induce minimal stress in the seated spine by reducing its curvatures.

Abstract: The box spring and box spring structure include a versatile frame made at appreciably lesser expense than presently known frames of equal rigidity and light weight. End rails of rectangular cross section carry no springs and are arranged completely underneath and overlap the side rails at the frame corners. All the rails have upper surfaces planar throughout their widths, those of the end rails being in secured engagement with the lower wide faces of the side rails at the frame corners to dispense with braces. The cross slats are parallel to each other and spaced any desired distances apart, equal or unequal. The end slats which carry the end rows of springs are arranged in close proximity to the respective end rails and are spaced above the end rails while extending inwardly enough in width to locate said spring rows in the proper position for upholstering.