LEAK DETECTION APPARATUS FOR AEROSOL CONTAINERS

An apparatus for detecting leaks in pressurized containers in a production line environment by means of ultrasonic noise detection, a preferred embodiment comprising a rotatable table having a peripheral area adjacent to a conveyor line and having portions covered by damping material, blocks peripherally spaced on the peripheral portion of the table to define spaces for carrying containers, the blocks having side walls of acoustic-absorbing material and end walls comprising acoustic barrier material, shield means forming a tunnel through which a peripheral portion, including the blocks, passes, the shield means comprising acoustic barrier material, the shield means also including extension portions adjacent to either surface of the table and comprising acoustic-absorbing material on the inside surfaces, at least one detection chamber defined within the tunnel, ultrasonic noise detector means within the chamber, means to feed cans seriatim through the chamber and means to reject containers in response to leaks detected therein.