Powered rolling shutter equipped with automatic stopping means
US6814129B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Dec 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention concerns a powered rolling shutter whereof the stator of the motor is connected to a fixed support via elastic means (R1, R2) for stopping the shutter in high and low abutment when the resisting torque exceeds a selected value, consisting of two springs (R1, R2) compressed by the stator rotation. The travel distance (12) before on of the springs (R2) is compressed is greater than the travel distance (11) before the other spring (R1) is compressed. The compression is ensured by a mobile element (12) also actuating a switch (18). The travels (c1, c2) required for activating the switch can be inverted. The motor can be mounted on the left or on the right with a differentiated resisting torque for stopping in high abutment and low abutment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.