초록 ▼

A multiple wall tank for the storage of liquids is manufactured from a rigid, single wall inner tank having at least one aperture by applying an outer sheath over the inner tank, removing a portion of the tank surrounding the aperture, applying a layer of a synthetic resin material to the inner tank

A multiple wall tank for the storage of liquids is manufactured from a rigid, single wall inner tank having at least one aperture by applying an outer sheath over the inner tank, removing a portion of the tank surrounding the aperture, applying a layer of a synthetic resin material to the inner tank exterior surface surrounding the aperture, providing a spacing means to provide for substantially free passage of liquids between a substantial portion of the inner tank and the outer sheath and bonding a portion of the outer sheath to the synthetic resin layer surrounding the aperture to form a substantially liquid impervious seal around the aperture.

대표청구항 ▼

[ What is claimed is:] [1.] A multiple wall tank for the storage of liquids comprising:a rigid, inner tank having generally cylindrical sidewall portions of a predetermined length, end portions generally transverse to said sidewall portions and a central axis extending generally longitudinally betwe

[ What is claimed is:] [1.] A multiple wall tank for the storage of liquids comprising:a rigid, inner tank having generally cylindrical sidewall portions of a predetermined length, end portions generally transverse to said sidewall portions and a central axis extending generally longitudinally between said end portions, said inner tank having an exterior surface, and at least one aperture formed through said inner tank;an outer sheath having an outer surface formed of a plurality of partially overlapping layers of a substantially liquid impervious thermoplastic synthetic resin material positioned over at least a substantial portion of said inner tank, with each successive overlapping layer having a predetermined width substantially less than the axial length of said inner tank sidewall portions, an inner surface and a leading edge, and an opening formed through said outer sheath having a periphery surrounding and spaced from said aperture;a spacing element positioned intermediate at least a portion of said inner tank exterior surface and said outer sheath to provide for substantially free passage of liquids between a substantial portion of said exterior surface of said inner tank and at least a portion of said outer sheath;a layer of a thermoplastic synthetic resin material attached to a predetermined portion of said exterior surface of said inner tank surrounding and proximal to said aperture and to a predetermined portion of said outer surface of said outer sheath surrounding and proximal to said outer sheath opening, said resin layer being bonded to at least a portion of said outer sheath surrounding and proximal to said inner tank aperture; andan adhesive interface positioned between said resin layer and at least a portion of said inner tank exterior surface bonding said resin layer to said inner tank exterior surface, with said outer sheath bonding to at least a portion of said resin layer surrounding and proximal said aperture, such that a substantially liquid impervious seal is formed around said aperture between said resin layer and said inner tank around said inner tank aperture.