Patent ID: 7159738

Claim:
A multi-cell tank for pressurised gas, characterised by the fact it comprises: a group of tubes ( 2 ) supported by spacing plates ( 3 ) with a parallel close series of holes ( 3 a ) suitable for housing similar tubes ( 2 a ) that are placed in such a way that each tube ( 2 a ) is almost in contact with the adjacent tubes; a body of fibrous resin ( 4 ) that fills all the spaces in the group of tubes, including perimeter spaces, where the resin is perfectly flush with the borders of the spacing plates ( 3 ); two bottom covers ( 5 ) that close the two ends of the group of tubes ( 2 ) and feature a series of hemispherical domes ( 5 a ) on the internal side, which communicate through ducts ( 5 b ) and exactly match the opening of the tubes ( 2 a ) in the group ( 2 ); tie rods ( 6 ) that join the two covers ( 5 ) to the group of tubes ( 2 ) and pass through the spaces in the group of tubes and through holes ( 3 b ) suitably provided on the spacing plates ( 3 ); an external reinforced layer realised by wrapping it in a resin texture with continuos wire ( 7 ), on which a second texture ( 7 a ) with longitudinal direction only is laid in order to join the bottom covers ( 5 ) applied and tightened with tie rods ( 6 ) to the group of tubes ( 2 ); a pre-formed external protection enclosure ( 8 ), preferably with aluminium sheet; an ordinary gas valve applied on a hole located on one of the two bottom covers ( 5 ).