Automatic window shade system
US6116320A · kind A · utility
26Cited by
25References
47Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1999 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Jan 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B80/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic window shade system is disclosed which can react to end points and obstructions through a torque sensing arrangement. This torque sensing can be accomplished through use of an electromagnetic interference device so that a change in torque is immediately detected and a modulation in operation of the shade can be effected. Rotating pitched disks elastically connected to each other can be used to act as the torque sensor for this an other applications. Multiple elastic elements can permit multiple location sensing as well as non-zero torque sensing and reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.