Multi-layered shingle and method of making same
US6355132B1 · kind B1 · utility
69Cited by
25References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1999 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | May 3, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2438
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method is provided of continuously producing a plurality of laminated shingles, including the steps of advancing a fiber sheet, waterproofing the sheet, applying granules thereto, cutting and separating the sheet into a plurality of strips which are positioned and adhered to each other to be multi-layered, and then cutting the strips while controlling the placement of longitudinal centerlines of the strips, and cutting the multi-layers so as to form a plurality of shingles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.