Process of simultaneously molding a plurality of shingles
US7141200B2 · kind B2 · utility
4Cited by
20References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jan 9, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/108
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process of simultaneously molding either a plurality of shingles or double walled shingles or other substantially planar exterior building products is provided, such that a blow moldable thermoplastic material is provided, of a composite parison that is then blow molded in a hollow mold, to produce novel shingles according to the process. Ventilation and/or insulation can be provided to a hollow interior between spaced apart walls of a double walled shingle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.