Night latch
US7637544B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 17, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Aug 17, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/67
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A night latch, in particular a night latch that includes a housing, tumbler, button, and a resilient members. The housing of the present invention maintains the tumbler, button, and resilient members. The housing also may have at least one protrusion located on its sidewall. The tumbler of the present invention has a pivoting member along with an aperture for housing a resilient member. In addition, the tumbler of the present invention may have a protrusion located on its front face, which interacts with a protrusion located on the rear end of lower portion of the button. The lower portion of the button also has a resilient member located on the front end. This resilient member exerts a force that maintains the tumbler in a retracted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.