Process for manufacturing a fuel tank equipped with an internal accessory
US8636943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2012 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Sep 6, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7172
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Process for manufacturing a fuel tank equipped with an internal accessory and having a plastic wall produced from a parison, said process comprising, in order, the following steps: a) the accessory and the molten parison are introduced into a mold so that the accessory is surrounded by the parison, said mold comprising cavities equipped with at least one moving part; b) a pressurized gas is introduced inside the parison to carry out a pre-blow molding of said parison; c) the pre-blow-molded parison is pressed locally against the accessory using the moving part in order to firmly attach the two without piercing the parison; d) the mold is closed and the final blow molding of the parison is carried out by flattening it against the mold cavities using the pressurized gas; and e) the tank is removed from the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.