US Patent 7670216 Automatic closure pressure equilizer

An automatically operated opening access closure and venting mechanism includes a vent with one or more baffles inserted in and opening. The baffles are coupled to an actuator mechanism which operates the baffles as the door moves from a closed to an open position or conversely, from an open to a closed position. When the door is in a closed position, the baffles are closed to maintain the integrity of the door. As the door begins to open, the baffle opens thus equalizing the pressure on both sides of the door allowing the door to be easily pushed open and to close with minimal force.