Floating flapper valve
US8584411B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2011 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | May 16, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for increasing the insulation value of a window system with a weep hole includes a flapper valve with a buoyant flap articulating relative to a non-moving portion. The flap is positioned on the window frame over the weep hole proximate the inside of the structure in which the window system is installed and the non-moving portion is attached to the window frame. The flap may be held against the frame around the weep hole by gravity and/or by the elastic memory of a portion of the flap, such as a plastic hinge. The flapper valve is closed when dry to diminish the flow of ex-filtration through the weep hole, but opens in response to being flooded with water due to the buoyancy of the flap, opening the weep hole and allowing the water to drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.