Shingle with reinforced nail zone and method of manufacturing
US10322889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2016 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Dec 31, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24372
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A roofing shingle includes an asphalt-coated overlay sheet, an underlay sheet having a front surface secured to the overlay sheet, and a reinforcement member is secured directly to the asphalt coating of the headlap portion of the overlay sheet without extending into the tab portion. The asphalt coated overlay sheet includes a first granular material secured to a first portion of a front surface of the headlap portion of the overlay sheet along the nail zone, and a second granular material secured to a second portion of the front surface of the headlap portion of the overlay sheet adjacent to the first portion of the front surface of the headlap portion, with the first granular material providing a thinner cross-section than the second granular material to define a depressed surface extending along said longitudinal axis of the nail zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.