Interlocking panel and method of making the same
US5661939A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | May 16, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F13/0864
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic siding panel which includes an upper connector, a medial main portion, and a lower connector. The connectors are complementary in shape so that they interlock with other siding panels of like construction. At least one of the connectors include a strip of high strength material for rigidifying the siding panel. The siding panels are fabricated by extruding a monolithic, substantially planar sheet composed of three different materials. Two of the materials are formed as layers which extend over the entire sheet. The third material is a high strength material adapted to rigidify the siding panel. After extrusion, the sheet is formed into a siding panel having a main portion, an upper connection and a lower connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.