The Continental Group, Inc.

Heinz W Nonnemann

Robert D Payne

Wesley J Szpitalak

James J Fridl

This relates to the provision of a vacuum indicator in a container wherein a product is vacuum packaged. Most specifically, an end unit for a conventional container is provided with a vent opening through which air rushes into the container when opened. There is secured to the underside of the end unit a whistle device in communication with the opening so that the inwardly rushing air actuates the whistle device and causes the whistle device to emit a whistling sound in accordance with the vacuum present within the container and thereby gives an audible indication of the freshness of the product.

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Palos Park, IL, United States of America

Heinz W Nonnemann