| 摘要 |
A tensionable internal reinforcing structure for a mattress, seat cushion or the like, comprising one or more elongate tension members each traversing a column of mutually abutting pressure elements to form a collapsible armature, includes several wedge pieces which are inserted between adjoining pressure elements to impart a desired curvature to the armature. The wedge pieces may be in the form of longitudinally slitted sleeves which are clipped either directly onto a tension member or onto a pressure element, being provided in the latter case with triangularly profiled end flanges to separate the engaged pressure element from its neighbors on one side of the centerline of the column. Aligned wedge pieces of adjoining armatures may be interconnected by a transverse strap.
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