Abstract: A tray formed from a sheet divided into panels, adopting a three-by-three matrix configuration, provided with a central, an upper and a lower row, each with three panels, wherein the sheet has a central panel and two end panels at its intermediate row, one at each side of central panel, these three panels intended to form the bottom, while in the upper and lower rows, there is a central panel and respectively and two panels with handle at each side, wherein additionally the end panels from each row are refolded over central panels, wherein optionally the overlapping surface of panels is glued through one or several gluing points, such that a tray with a minimum production processing, made on a single machine, and erectable “in situ”, is obtained.

Abstract: A floppy disc structure comprises a magnetic disc which is rotatably disposed in a rectangular casing. At points where a gripping arrangement grasps the floppy disc in order to draw the same into a floppy disc drive unit automatically, spacers are provided which prevent compression of the casing, the spacers being disposed between the inner surfaces of the walls of the casing. The spacers are approximately the thickness of the magnetic disc.

Abstract: A mosaic printing head for typewriters, data printers, teleprinters and the like, utilizing dot-producing pin-like printing elements for recording characters in the form of a dot pattern upon a data carrier, employing a plurality of dot forming elements, each of which is adapted to be actuated by an elongated, piezoelectric transducer which is subjected to electric fields in rapid succession to effect changes in the length of each transducer and thereby produce driving forces upon the associated element.