Injection moulding of functional cavities
US7455806B2 · kind B2 · utility
13Cited by
3References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 9, 2004 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7542
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mould assembly (60) and a method of use in injection moulding of a part having a functional cavity therein. The mould assembly has a recess (72) to receive a hollow tubular insert (48) intended to be placed in the mould assembly before the injection of a mouldable material into the cavity and to remain in the part after moulding. A gas supply arrangement supplies pressurised gas to the hollow tubular insert at a selected stage during the injection process whereby to form the functional cavity in the part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.