Latch for tiltable sash windows
US8220846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | May 9, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0969
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A latch is provided for use principally on a pivotal sash window of a double-hung sash window assembly. The latch comprises a latch-bolt slidably mounted within and biased relative to a housing, where the housing is mounted to the top rail of the sash window. The latch bolt is connected to a button for manual actuation of the latch bolt. The latch bolt, while maintaining the convenience and utility of a standard short throw latch, is contoured and designed to maintain engagement with the jam after the window has been deformed under high sustained wind loading typically experienced during extreme weather phenomena such as hurricanes and tornados. The engagement is assured in spite of twisting of the latch bolt within the corresponding opening in the jam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.