Electric potentially-driven shade with improved shade extension control, and/or associated methods
US11174676B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2020 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Jun 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B5/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Certain example embodiments relate to electric, potentially-driven shades usable with insulating glass (IG) units, IG units including such shades, and/or associated methods. In such a unit, a dynamic shade is located between the substrates defining the IG unit, and is movable between retracted and extended positions. The dynamic shade includes on-glass layers including a transparent conductor and an insulator or dielectric film, as well as a shutter. The shutter includes a resilient polymer, a conductor, and optional ink. The shutter extends towards a bottom stopper in a controlled manner by virtue of a conductivity difference that is introduced in an area proximate to the bottom stopper. This conductivity difference affects the electrostatic forces in that area in a manner that can be used to alter shutter extension speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.