Drainage system for use in building construction
US7543414B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 2, 2006 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Apr 23, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B1/7046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flashing and drainage system for use in cavity wall construction, including a flashing member is sized and shaped to be received within a cavity of the wall and over a base member. The flashing member includes a lower flashing portion and an upper flashing portion. The system includes a water permeable body disposed on the flashing member including a plurality of weep tabs extending on the lower flashing portion and spaced apart to correspond to weep holes formed through the wall and a plurality of porous bodies positioned on the upper flashing portion. The water permeable body has a porosity sufficient to permit water to pass therethrough but substantially insufficient to permit mortar and debris to pass therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.