ES309577A1 - Improvements in the manufacture of metallic blinds of foldable sheets. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in the manufacture of metallic blinds of foldable sheets. (Machine-translation by Google Translate, not legally binding)
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Improvements in the manufacture of metal shutters with foldable sheets, collaterally, essentially characterized by the fact that they constitute their sheets based on galvanized sheet steel strips, which are worked by punching and cold rolling between forming rollers, obtaining in this operation the edges resistant to bending and flat outer flaps, at different heights with respect to the central plane of the strip; in establishing the collateral bond of each strap, by interposing hinges which are joined by their blades respectively to one and another sheet on the sides of the edges ridges, so that the body of the hinges result with its set of spikes and hollow in elevated position with respect to the general plane of the set of shutter blades. (Machine-translation by Google Translate, not legally binding)
ES0309577A1965-02-191965-02-19Improvements in the manufacture of metallic blinds of foldable sheets. (Machine-translation by Google Translate, not legally binding)
ExpiredES309577A1
(en)
A method of making a tubular member for a heat exchanger or similar from a plate of substantially flat material. (Machine-translation by Google Translate, not legally binding)