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US 6,170,705 B2Granted
Double-walled tube with outer metal shell and inner plastic sheath
AssigneeCebal
InventorsBernard Schneider, Herv{acute over (e)} Bodet
Life of this patent
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AssigneeCebal
InventorsBernard Schneider, Herv{acute over (e)} Bodet
Estimating the term…
The invention concerns a double-walled tube (1) for storing and dispensing hazardous products, comprising an inner tube (10) with a skirt (13), a shoulder (12) and an inner neck (11) delimiting an inner orifice (14), a metal tube with a skirt (25), a shoulder (24) and an outer neck (21), the two tubes being mutually connected at their necks (11 and 21) by a joining piece (30) comprising a bottom (34) and at least an outer skirt (35) enclosing the two necks (11 and 21). The invention is characterised in that the joining piece (30) is provided with an inner skirt (31) with its outer wall having a globally truncated profile, such that, when the joining piece (30) is forcefully pushed down, said inner skirt (31) causes the median parts of the necks (11 and 21) to expand at their circumference, thus widening the ends of said necks.
Double-walled tube (1) intended to store and dispense corrosive products, comprising a inner tube (10) having a skirt (13), a shoulder (12) and an inner neck (11) containing a inner opening (14), a metal tube having a skirt (25), a shoulder (24) and an outer neck (21), the two tubes being connected together at the necks (11 and 21) by a nozzle (30) comprising a base (34) and at least one outer skirt (35) that grips the two necks (11 and 21) together, wherein the nozzle (30) is provided with a inner skirt (31) the outer surface of which has an overall tapered profile such that when the nozzle (30) is forced downward said inner skirt (31) causes the circumferences of the central parts of the necks (11 and 21) to expand and the ends of said necks to flare.
Dependencies are inferred from the claim text.