Counterbalanced motorized shade roll system and method
US8919419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2009 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Jun 15, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/72
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a window covering system with a shade roll, a counterbalanced motorized shade roll system includes a shade roll with a hollow interior connected with a window covering system. A motor is located within the hollow interior. A torsion spring is also located within the hollow interior of the shade roll and the torsion spring is connected with the motor on one end and with the hollow interior on another end. Batteries are also located within the hollow interior of the shade roll opposite from the motor and after the connection of the torsion spring with the hollow interior of the shade roll such that the torsion spring does not surround the batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.