A container closure has a cap part which can be removed from and replaced upon an associated container as required and a tamper evident tear band which has to be removed from the closure before the cap part can be initially removed from the container. The tear band is connected to the skirt of the cap part by a number of spaced apart relatively strong frangible nibs, the spaces between the nibs being each filled by a relatively weak thin web of material.

A container having a threaded neck is provided with a removal resistant cap which can be applied to the container neck by rotational thrust. The cap has a depending skirt having an internally threaded lower section with the threads terminating in a bead intermediate the ends of the skirt. The neck has an upper threaded section with the threads terminating in a bead spaced below the top of the neck. When the threads of the cap are engaged with the threads of the neck and the cap is rotated relative to the neck, the skirt will circumferentially expand so that the skirt bead passes over the neck bead. At that point, the threads will no longer engage and the interlocked beads will inhibit removal of the cap. Means are provided to enhance removability of the cap from the neck by tearing away a portion of the skirt.

To prevent tampering with the contents of containers, the neck of the container is formed with external beads with grooves under the lower surfaces of the beads. The cap has an outer skirt formed with internal beads which lock under the shoulders of the neck beads. Preferably, the cap has an inner skirt which seals against the inside of the container neck. To remove the cap, a score-line is formed extending upward from the bottom edge of the skirt and merging with a horizontal scoreline located between the two internal beads, so that one may grip a tab on the lower edge of the skirt, pull upward on the substantially vertically section and thence horizontally around the horizontal scoreline. Unless the skirt is thus torn, it cannot be removed from the neck and tearing of the skirt indicates tampering with the contents of the container. In the present invention, instead of the horizontal scoreline continuing around the periphery of the cap, it terminates at an unscored area which connects the upper and lower portions of the skirt. The lower portion of the skirt may be gripped by the user as an auxiliary means of removing the cap. The primary means of removing the cap is a flange which extends outward from the top of the cap skirt and may be gripped by the finger and/or thumb to pull the cap off the neck.

A tearable bottle cap comprises a top planar disk, an approximately cylindrical skirt depending from said planar disk to snugly fit around the neck of said bottle, a first inner bead extending throughout the circumference of said skirt at a predetermined distance from the lower end of said skirt, to engage the lower portion of the upper bead of the bottle neck, a second inner bead extending throughout the circumference of said skirt at a predetermined distance above said first inner bead, in order to engage the upper portion of the upper bead of the bottle neck, a plurality of vertical, radially inwardly directed lugs projecting from the corner between said disk and said skirt and having their lower ends embedded in said second inner bead to be reinforced thereby, said lugs having a width such that they will accommodate therebetween the upper terminal portion of a screw threaded neck bottle, said radially inwardly directed lugs also serving as shock absorbers when the cap is used on unthreaded neck bottles not having a screw threaded terminal portion.

A wine or beer keg dispenser spout has a curved exterior bead terminating in an outward-downward slanted surface, then a cylindrical surface and a horizontal shoulder below the latter. A cap for the spout is of plastic having a top disk and a depending skirt which fits over and snugly engages the exterior of the spout, the lower edge of the skirt resting on the shoulder. A tab extends below the skirt at an acute angle to the bottom edge. The skirt is weakened in a score line which is an upper extension of the top edge of the tab and continues to a terminus above the bead. Pulling the tab tears the skirt along the score line to permit separation of the cap.