Method for manufacturing a storage tank
AssigneeInergy Automotive Systems Research (Societe Anonyme)
InventorsDavid Hill, James Edward Thompson
Life of this patent
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Abstract
Method for manufacturing a storage tank comprising an inner liner, an outer filament winding and a connecting part. The method comprises the steps of: blow molding the inner liner by extruding a parison, pinching the inner liner at least at one extremity to create a pinch and then blowing the parison; providing the connecting part with a slot of appropriate shape and size to receive a part of the pinch; inserting the part of the pinch in the slot so as to secure the inner liner and the connecting part; and applying the outer filament winding around the liner and the connecting part.
Claims18
A method for manufacturing a storage tank, the storage tank comprising an inner liner comprising a shaped pinch, a connecting part having a slot corresponding to the shape of the pinch, and an outer filament winding;
- the method comprising:
- placing an extruded parison between two halves of a mold,
- closing the two halves of the mold thereby compressing the parison at least at one extremity to create a shaped pinch conforming to an internal surface of the two mold halves, wherein the shaped pinch is obtained from the compression of the parison before the parison is blown;
- blowing the parison to conform to the inner surface of the mold to obtain the inner liner;
- providing the connecting part with a slot of appropriate shape and size to receive a part of the shaped pinch;
- inserting the part of the pinch in the slot of the connecting part,
- securing the inner liner and the connecting part to obtain an assembly of the inner liner and connecting part;
- and
- applying the outer filament winding around the assembly of the inner liner and the connecting part to obtain the storage tank.
Dependencies are inferred from the claim text.