Triple extruded frame profiles
US5538777A · kind A · utility
28Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1993 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Sep 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2902
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method is provided for triple extrusion of a foam material, a coating and one or more flexible flanges attached to the coating or foam material. All three materials are coextruded through a common die and are useful for forming window sashes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.