Method for manufacturing a plastic fuel tank that includes a connector provided with a screw thread
US7780901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2007 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Apr 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.