Abstract: A plastic cover fits over the top and partially down the sides of a corked wine bottle. Such a bottle conventionally has an external bead a short distance below the top of the neck. The cover has a skirt formed with a complementary bead which fits tightly over such bead, the plastic material stretching sufficiently for the cover to lock into place so that it cannot be removed with the skirt intact. A tear strip is formed substantially circumferentially around the cap bead by a pair of vertically spaced score-lines. The skirt is grooved to form a tear tab which extends circumferentially along a portion of the bottle bead. By tearing off the tear strip the portion of the cap thereabove can be removed. As a supplemental means of access for removal of the cork, the top disc of the cap may be formed with a circular score-line.

Abstract: A neck finish for plastic containers which are closed by plastic caps of the general type having an integral, thin, flexible inward-directed top flange at the lip which initially slants upwardly-inwardly at an angle of about 20.degree.. When the cap is applied, this top flange fits under the top disc of the cap and is depressed to an angle of about 10.degree.. It nests between the outer skirt and the inner skirt. The neck seals against the outer skirt in several locations (as in prior constructions), but the inner edge of the flange seals tightly in the corner where the bottom of the top disc and the outside of the inner skirt intersect. The top flange also augments the sealing effect of the lower edge of the inner skirt and the inside of the neck. Below the cap skirt the container neck has a shoulder to impede any attempt to pry the cap off the container.

Abstract: To prevent tampering with the contents of containers for pharmaceuticals and other products, a plastic cap which is an improvement upon U.S. Pat. Nos. 3,338,446 and 4,166,552. The neck of the container is sealed with a commercially available foil seal; the cap is dimensioned so that the foil seal is inserted inside the cap prior to its being applied to the container. The dimensions of the cap accommodate the foil seal yet the snap-on and the tamper-proof features of the cap are maintained. At intervals, scorelines are formed extending upward from the bottom of the cap skirt; these tear if one attempts to pry the cap off the container and are visible evidence of the tampering.

Abstract: A cap for a wide-mouth container has a short inner skirt and a longer outer skirt. The outer skirt has upper and lower internal locking beads which are preferably interrupted with gaps between bead sections. Above the lower locking bead is a circumferential score line. A portion of the outer skirt below the score line is cut away to form a pull tab extending parallel to the score line. The cap has a peripheral flange the undersigned of which slants downward-inward. The container neck is thin walled, having an internal top flange terminating in a first sealing surface which bears against the top of the inner skirt, a groove below the last-mentioned surface and a second sealing surface below the groove which also bears against the inner skirt. The neck also has upper and lower external beads each having shoulders on their lower edges under which the upper and lower internal locking beads of the cap seat. The neck curves outward in a lower shoulder immediately below the bottom edge of the skirt.

Abstract: A container neck has a bead mating with the internal bead on the lower end of the skirt of a sifter fitment. A plastic tamper-proof cap fits over the fitment and has a skirt having two vertically spaced internal beads locking under the shoulders of external beads on the container neck. The cap skirt has a first score line immediately above the lower internal cap bead and a second score line extending from the first score line to the bottom edge of the cap skirt. Preferably both the internal cap beads are interrupted. The cap has a peripheral flange, the underside of which slants downward-inward.

Abstract: A blow molded or injection molded plastic container has a neck formed with a substantially horizontal flat top, an internal substantially vertical first sealing surface, a groove, a very smooth second sealing surface of less diameter than the first sealing surface and a lower groove and then a vertical stretch which merges into a breast which widens out to the full size of the container, an external first vertical surface, a horizontal inwardly extending shoulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface at about the level of the vertical stretch. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The neck accommodates a cap which has upper and lower internal beads (which seat under the shoulder and external bead of the neck) interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck.

Abstract: A blow molded or injection molded plastic container has a neck formed with a substantially horizontal flat top, an internal substantially vertical first sealing surface, a groove, a very smooth second sealing surface of less diameter than the first sealing surface and a lower groove and then a vertical stretch which merges into a breast which widens out to the full size of the container, an external first vertical surface, a horizontal inwardly extending soulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface at about the level of the vertical stretch. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has upper and lower internal beads (which seat under the shoulder and external bead of the neck) interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck.

Abstract: A plastic container neck has an inside substantially vertical sealing surface, a top groove, a very smooth second sealing surface of less diameter than the first sealing surface, a lower groove and a vertical stretch. The outside of the neck has a vertical surface, a horizontal, inwardly-extending shoulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface. The container has a substantially uniform wall thickness. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has lower internal beads interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck. Thickenings on the interior of the cap outer skirt paralleling the spiral groove of the skirt from the bottom edge of the skirt to the horizontal groove to facilitate tearing the skirt.

Abstract: The cap of the present invention has a top disk which fits on the end of the neck of a bottle and a thin-walled outer skirt formed with a pair of circumferential beads which fit against mating portions of the bottle neck. A pair of parallel, circumferential internal score lines, defining a weakened cylindrical band, are formed in the outer skirt between the circumferential beads and in proximity to an integral tear tab. By pulling on the tab, the band is torn out of the outer skirt, permitting the upper portion of the cap above the band to be pulled off the neck. This upper portion can be replaced for reclosure purposes. Preferably, the cap is formed with an integral, smaller diameter "corking" skirt which fits inside the bottle neck.

Abstract: A plastic bottle cap for large capacity water bottles has a central disc with a depending skirt which fits snugly around the exterior of the bottle neck and, so long as it remains intact, prevents tampering with the contents. The lower part of the skirt is scored and provided with a pull tab so that it may be partially torn off, permitting removal of the cap from the bottle neck. The score line slants upwardly from the bottom edge of the skirt to a circumferential score line extending only part way around the cap and located slightly below the maximum diameter area of the external bead of the cap which is installed over the external bead on the bottle neck. A pair of internal, thin, flexible circumferential rings are formed in the cap immediately above the score line and at about said maximum diameter to engage the neck bead and prevent leakage. In one form of the invention, the skirt is internally tapered to facilitate installation of the cap.

Abstract: The neck of a plastic container of the type originally intended for use with a foil type closure is formed with a top bead, a first reduced-diameter step and a second reduced-diameter portion and then a downward-outward widening breast. The cap has a top disk which seats on the neck and has an outer skirt having an internal upper bead engaging under the top bead and a second internal bead fitting deeply into the second reduced-diameter portion. An inner skirt depends from the disk and fits inside the neck. Thus the cap seats tightly on the container neck. To remove the cap, a circumferential internal weakened portion is formed in the outer skirt. A curved weakened portion extends up from the bottom edge of the outer skirt and merges with the circumferential weakened portion. A pull tab depends from the bottom edge of the skirt. By pulling upward on the tab, the portion of the outer skirt below the first reduced-diameter portion of the neck is torn away.

Abstract: A plastic stopper is used for small-diameter bottle necks such as are conventionally closed by corks. A top disk is annular in that a central hole is formed and below the disk is a pocket having an inside diameter coinciding with the central hole. The pocket is closed at the bottom. The pocket is dimensioned to receive a standard corkscrew with a tight enough grip to permit the stopper to be drawn. The disk also has a peripheral depending skirt having an outside diameter such that it fits tightly in the bottle neck. The lower outer edge of the skirt is tapered to facilitate seating. An annular space below the disk between the skirt and the pocket affords flexibility to the stopper for seating and pulling and also can be partially filled with liquid to reduce the amount of air in the headspace of the bottle.

Abstract: A widemouth (e.g. 120 mm) jar preferably of plastic material has a neck having a flexible in-turned flange at its upper end and two vertically spaced, horizontal inward-formed beads with two outward-downward conical surfaces above and below the lower inward-formed beads. The cap has a top disk with a depending short inner skirt having a tapered edge and an elongated peripheral skirt. The peripheral skirt has in consecutive order proceeding downward an upper cylindrical portion, an upper internal bead, a circumferential internal weakening groove, a lower locking bead and a slanted ramp. The in-turned flange of the neck is compressed between the two cap skirts, the upper internal bead seats against the upper conical surface and the locking bead seats in the lower inward-formed bead of the neck. Thus a product and air-tight multi-zone seal is effected; and, further, once seated the cap is tamper-proof in that it must be torn to be removed.