Frame supported by laminae of lessened flexibility suitable for use in cradles for small children

摘要

A frame suitable for use in a cradle for small children, or in similar devices, where a structure for containing a dynamic load requires support, consists of two flexible longitudinal laminae, parallel one to another and joined by one or more crosswise laminae. The longitudinal laminae are curved in a more or less central part of their length so forming a first section that rests on the ground and a second section inclined at an angle determined in relation to the first section to sustain the containing structure. In the curved part and along the whole of the second section the longitudinal laminae are subjected to torsion opposite in sign such as to incline them towards the inside of the frame; this lessens their flexibility sufficiently to limit elongation of the flexor oscillations.

主权项

1. Frame suitable for use in a child's cradle (30) or in similar devices (50) wherein a structure (32, 33) for containing a dynamic load requires support, the frame (31) comprising two flexible longitudinal laminae (40, 41), parallel one to another and joined by at least one crosswise lamina (43), said longitudinal laminae being curved at least in one part (40c, 41c) of their length to form a first section (40a, 41a) resting on the ground, and a second section (40b, 41b) for supporting said containing structure, each longitudinal lamina (40, 41) being subjected to a torsion during a shaping process that produces a permanent deformation;characterized in that:
said second section (40b, 41b) being upwardly inclined; at least in the curved part (40c, 41c), each longitudinal lamina (40, 41) is subjected to either clockwise or anticlockwise torsion and the radius of curvature at the side of the lamina in the direction of torsion is less than the radius of curvature at the opposite side.