Drive unit for a vertical blind
US5954108A · kind A · utility
3Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Jan 28, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/368
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drive unit for a vertical blind having a housing with a louver traverse drive shaft with a loop string wound therearound, a louver tilt drive shaft with a loop chain wound therearound, a louver open detection means with a slider and a switch to be turned on and off by the slider, and a control means for rotating the louver traverse drive shaft once a neutral position of the louvers is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.