Method of molding a perforated article
US4401615A · kind A · utility
5Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | May 29, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27N5/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of molding a perforated article involves supplying a formable material to a preforming chamber where the material is compressed so that it substantially assumes the cross-sectional shape of the preforming chamber. The formable material is then transferred under compressive forces to a molding chamber, which has a volume less than the volume of the preforming chamber and a shape which substantially matches the shape of the perforated article to be molded. The formable material is then heated in the molding chamber to cure it and thereby form the perforated article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.