Plug-in transmission mechanism for a motor-driven blind
US6619365B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | May 14, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | May 14, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/322
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A plug-in transmission mechanism for a motor-driven blind is constructed to include a driving unit, two cord roll-up units controlled by the driving unit to lift/lower or tilt the slats of the motor-driven Venetian blind. Each cord roll-up unit includes an amplitude modulation wheel rotated by the driving unit to lift/lower the slats and bottom rail of the Venetian blind, a frequency modulation wheel for rotation with the amplitude modulation wheel to tilt the slats of the Venetian blind, a stop block adapted to limit the angle of rotation of the frequency modulation wheel, and a link supported on a spring in a longitudinal groove of the amplitude modulation wheel and detachably engaged into a notch of the frequency modulation wheel to control linkage between the amplitude modulation wheel and the frequency modulation wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.