Composite shingle having shading zones in different planes
US5901517A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | May 9, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D2001/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A laminated shingle is provided, having lighter and darker granule portions visible from the front, at different planes; the front-most or anterior plane generally having granules of lighter shading and the more rearward or posterior plane generally having darker granules. The darker granules in the more posterior plane are visible from the front of the shingle to provide visually sharp, precise delineation between zones of lighter and darker shading. The shingles may be of multi-layer construction with suitable adhesives securing the layers together. The darker granules may be visible from beneath the lower edge(s) of the anterior shingle, to provide a shadow line effect. Alternatively, or in addition thereto, the darker shingle zones from the more posterior plane may be visible through tab-separating slots of the lighter shaded anterior shingle portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.