Hollow panel having cover material bonded thereto and process for producing same
US6060144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Feb 26, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24744
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hollow panel having a cover material bonded thereto includes a first wall having an inner surface and a substantially planar outer surface. A second wall opposes the first wall so as to define a hollow space therebetween and has at least one protrusion formed therein. Each protrusion has a tip which is integrally joined to the inner surface of the first wall to form a double-walled rib bridging the hollow space. The double-walled rib has integrally joined opposing walls such that an outer surface of the second wall is substantially planar. The cover material is bonded to the outer surface of the first wall. A process for producing a hollow panel includes placing a cover material having outwardly protruding fuzzy hairs between a first mold half and a first portion of a parison to be formed into a first wall such that the fuzzy hairs face the first mold half, bringing the first mold half and a second mold half having a slide core positioned therein into a closed position, moving said slide core into a cavity defined by the first and second mold halves to form a protrusion in a second portion of the parison to be formed into a second wall, the protrusion having a tip integrally join…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.