Patent ID: 8069896

Claim:
A method for driving a roller-shutter door having a drive mechanism, said method comprising the steps of: (a) activating a switch in response to an external stimulus, said activation actuating a timer wherein said actuation raises a timing arm; (b) raising said timing arm; (c) raising a cable passing across a top portion of said timing bar and wherein said cable passes connected to said switch on one end and to a solenoid on a second end and wherein said cable passes through a top portion of a rocker arm assembly disposed between said timer and said solenoid; and, wherein said rocker arm assembly comprises a one-way bearing; (d) actuating said solenoid as a result of said raising of Said timing bar; and (e) activating said one-way bearing to cause said door to be raised to a pre-set position for a pre-set period of time under control of said timer and as driven by said drive mechanism.