Driving system for roll-up shades, blinds, rolling shutters and the like
US4417185A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Mar 27, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/82
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This driving system for roll-up shades, blinds, rolling shutters or the like is applicable to tubular winding tubes of the shade or the like and comprises an electric motor having its shaft coupled to the tube, and an emergency manual control mechanism in the form of a worm and wheel gearing adapted, in case of failure in the supply of electric current, to drive at the same speed the tubular casing of the electric motor and the winding tube, without causing any misadjustment of the automatic stop device; for this purpose, a particularly compact kinematic connection is provided and comprises a first toothed ring rigid with the winding tube and connected through adequate kinematic means including a pinion rotatably mounted inside a drive wheel to a second toothed ring disposed on the opposite face of this wheel and connected via a toothed wheel to cam members incorporated in the automatic stop means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.