Sash lock with improved tumbler
US5536052A · kind A · utility
64Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Oct 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/65
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tumbler is pivotably mounted in a sash lock housing. In an extended position, an end of the tumbler limits movement of a window sash. A post in the housing extends through an eccentric bore in the tumbler. The bore defines a shelf or protrusion that urges the tumbler into engagement with the housing, thereby preventing over-rotation of the tumbler in the extended position. A spring urges the tumbler toward the extended position and cooperates with the protrusion to urge the tumbler into engagement with the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.