Drainage system for use in building construction
US7543413B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 6, 2005 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Jan 18, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B1/7061
- 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, which is oriented generally horizontally when atop a foundation portion of the wall, and an upper flashing portion, which is oriented generally vertically within the cavity of the wall. A plurality of weep tabs are positioned on the lower flashing portion and spaced apart to correspond to weep holes formed through the wall and a plurality of porous bodies are positioned on the upper flashing portion. Each of the plurality of porous bodies have a porosity sufficient to permit water to pass therethrough but substantially insufficient to permit mortar and debris to pass therethrough, each of the plurality of porous bodies being positioned to protect a corresponding one of the plurality of weep tabs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.