Double hung window having combined pushdown surface and keeper
US6938377B2 · kind B2 · utility
1Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2003 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Aug 28, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1041
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A double hung window is provided with a keeper on the upper pane that also provides an elongate surface for receiving a downward force for moving the upper pane. The keeper has a tongue provided on an inner side of a central web of the u-shaped member that forms the combined keeper and surface. The force-applying surface is provided on a vertically upper surface of the same central web. The force-applying surface is curved along a slight radius such that it comfortably accommodates the fingers of a user to provide the downward force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.