Motorized roll-up device for venetian blinds
US5699847A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1996 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Jun 13, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S160/17
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Motorized device (2) for rolling up cords or tapes (13, 15) of Venetian or folded blinds, equipped with an automatic stopping device detecting a blockage of the motor. This automatic stopping device consists of a screw (6) carrying a traveling nut (7) rotationally retained in a tubular housing (9). Stoppage of the motor is caused by the detection of a blockage of the motor by the travelling nut (7) rotationally retained in a tubular housing (9). Stoppage of the motor is caused by the detection of a blockage of the motor by the travelling nut (7), or the blind, coming up against the casing. The bottom stopping point is adjusted by unblocking the cage (9) and rotationally driving it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.