Cord lock for venetian blinds
US4722383A · kind A · utility
14Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Oct 24, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/324
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cord lock for locking a venetian blind in its raised position only. The lock has a housing with spaced side walls spanned by a smooth-surface pin, a knurled roller slidably received in slots in the side walls, a plastic lever below the pin and roller and having an extension below the blind head. The lift cords of the blind pass between the pin and roller. The extension is engaged by the top-most slat of the blind which lifts the lever and knurled roller thereby causing the lift cords to draw the knurled roller up the slot locking the lift cords between the roller and pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.