Patent · US Active

Method for manufacturing a plastic fuel tank that includes a connector provided with a screw thread

US7780901B2 · kind B2 · utility

3Cited by
5References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 18, 2007
Grant dateAug 24, 2010
Priority date
Expiry dateApr 18, 2027

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB29L2031/7172
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

Method for manufacturing a plastic fuel tank by moulding a parison in a mould, in which method the parison is locally deformed during moulding of the parison in order to obtain an impermeable hollow built-in connector provided with a screw thread, and to do so by means of a concave counter-form and a convex form that can penetrate the counter-form, these two pieces being secured, one to the mould and the other to a core located inside the mould, or vice versa, and at least one of these pieces being provided with a screw thread, the moulding of the connector taking place by the convex form penetrating the concave counter-form.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.