Rieke Corporation

Riche Corporation

Mahlon E Rieke

Kenneth L Summers

A tamper-proof cap for a container closure device for providing a visual indication of any tampering and tampering attempts with the container closure device includes an annular body portion, a pull ring portion detachably joined to the annular body portion, a tear-out strip portion joined to the pull ring portion and a pair of connecting membranes disposed between the tear-out strip portion and the annular body portion. The annular body portion includes an enclosing wall, an inwardly extending lid section joined to a top edge of the enclosing wall, and an outwardly extending lip section joined to a second opposite edge of the enclosing wall. The inwardly extending lid section is annular in shape and defines a center opening. The pull ring portion is detachably joined to the inner edge of this center opening by three reduced-thickness membrane sections which can be easily torn under nominal manual force. The connection between the pull ring portion and the tear-out strip portion remains intact, yet as additional force is applied upwardly and outwardly on the pull ring portion in the direction of this tear-out strip portion, the connecting membranes begin to tear thereby separating the tear-out strip portion from the remainder of the annular body portion. Once this strip portion is completely removed, the annular body portion is severed and it is then able to be manually removed from its secured position beneath the anchor ring which secures the closure device to the container.

Molded plastic tamper-proof cap with pull ring and tearable membranes

A cap-like closure device for a container which is arranged with a raised annular boss formed in one end to receive the closure device includes a flexible spout member secured to the raised annular boss by means of an anchor ring which is disposed overlapping the outermost edge of the flexible spout member and is crimpable to secure this outermost edge around the top lip portion of the raised annular boss. A resealable cap is provided which threadedly engages the top rim portion of the flexible spout and includes a depending annular groove in its top lip portion which is suitably sized to receive the top rim portion of the flexible spout to provide a secondary seal. Disposed over the resealable cap is a tamper-proof cap which is temporarily retained by the anchor ring, but which may be removed from beneath the innermost edge of the anchor ring by prying. Integral with the flexible spout member is a diaphragm which has joined thereto a pull tab ring member. A pull force on the pull tab ring member and directed upwardly enables the diaphragm to be torn free of the flexible spout member and thereby open the container. Also joined to the flexible spout member is a venting unit which includes a plurality of venting apertures to enable the entry of air for the smooth and continuous discharge of container contents.

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Auburn, IN, United States of America

Mahlon E Rieke