B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
B65D39/12—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers expansible, e.g. inflatable
Dispositif de fermeture d'un orifice muni d'une securite notamment pour l'obturation d'un orifice d'un reservoir contenant des produits chimiques, petroliers ou analogues.