Method of making a hollow core structural member
US5348798A · kind A · utility
18Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1992 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Oct 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved method for forming a hollow core structural member, such as an automotive bumper beam, from moldable plastic sheets, such as fiberglass reinforced plastic sheets, by providing a press having a desired shape on the opposing members of the press, placing opposed sheets in the press with a layer of frozen, meltable material, such as ice, in place between them, forming the sheets into the desired article configuration in the press, removing the formed member from the press, then melting and removing the meltable material from the interior of the formed member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.