Sash lock
US4621847A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1984 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Dec 13, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1079
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sash lock for a casement window having a case with two sections of different height and with the lower level section having a top wall with a circular segment opening with a curved edge which receives a generally circular part of a rotatable operating member positioned in the opening and extending under a vertical wall interconnecting the two case sections of different height. The rotatable operating member has a curved edge of the same curvature as the curved edge of the case top wall opening as well as a peripheral flange underlying the curved edge of the top wall opening whereby in all rotative positions of the planar operating member the opening is effectively sealed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.