Emergency ventilation means for confined livestock areas
OwnerRobert W. Milroyinventor
Life of this patent
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Abstract
An emergency ventilation means for confined livestock areas comprised of a plurality of louvered openings which are normally closed by means of electrical motors having a high gearing ratio. When power is lost to the confined livestock area a spring on each set of louvers which is loaded by the electrical motor moving the louver mechanism so as to hold the louvers in a normally closed position causes the louvers to move to an open position so that emergency ventilation will flow through the confined livestock area until power to the normal ventilation means is restored.
Claims2
An emergency ventilation means for confined livestock areas comprised of a set of louvers fastened together in moving relation to each other, an electrical motor having a high gearing ratio, an arm connected to the louvers, a strip connecting the arm to the electrical motor, a spring loading between the strip and a frame for the louvers to immediately open the louvers when electrical power is lost, the electrical motor having a stop thereon to prevent the electrical motor from distorting the louvers as the louvers reach a normally closed position.
Dependencies are inferred from the claim text.