Shutter Auxiliary Opening and Closing Device

A ventilation shutter having a frame forming the mounting structure for a plurality of louvers, wherein the plurality of louvers are pivotably mounted to the frame so as to move between an open condition to allow the flow of ventilation air through the shutter and a shut condition to discourage a flow of air through the shutter, the ventilation shutter comprising:

• at least one connecting rod extending transverse the plurality of louvers;
• a plurality of cranks, wherein each of the plurality of louvers has at least one crank connecting the louver to the at least one connecting rod such that pivoting movement of each of the plurality of louvers between the shut condition and the open condition is synchronized with up and down movement of the at least one connecting rod;
• a permanent magnet couple interacting with the at least one connecting rod and the frame to provide an active magnetic force that holds the plurality of louvers in the shut condition;
• and
• an electromagnet couple interacting with the at least one connecting rod and the frame to provide an active magnetic force that holds the plurality of louvers in the open condition.