| 20090313898 | SENSING MECHANISM FOR AN ASSISTED GARAGE DOOR - A garage door opening module is disclosed, the module comprises a power unit having a rotatable output drive, an endless transmission drive adapted to transfer movement from the rotatable output drive to a door drive, and a sensor mechanism positioned along the endless transmission drive and adapted to sense a transmission drive slack, the sensor mechanism adapted to stop the power unit when a transmission drive slack displacement threshold is reached. A method for actuating a garage door and a sensor module for preventing movements of an assisted garage door are also disclosed. | 12-24-2009 |
