Shingle with a rendered shadow design
US6457290B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 29, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Feb 29, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D2001/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A laminated shingle has a rendered shadow design when placed with other similar shingles on a roof deck. The laminated shingle includes an overlay member and an underlay member fixedly attached to each other. The overlay member includes an upper or headlap portion and a lower or exposed butt portion with one or more tabs separated by cutouts. The underlay member is coated with a layer of relatively dark granules to form vertically and horizontally-oriented shading areas. In one embodiment, one or both vertical edges of each tab are generally parallel to the vertically-oriented longitudinal axis of the vertically-oriented shading area to expose a portion of the shading area. In another embodiment, the width of each tab is randomly selected and the width of the vertically-oriented shading area is a function of the width of the adjacent tab. In yet another embodiment, the intensity of the shading areas can increase from the bottom to the top of each cutout. The overlay member can also include a layer of relatively dark granules randomly applied to the upper and lower edges of the tabs. In still yet another embodiment, the tabs and cutouts of the overlay member have non-parallel vertic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.