Receptacles – Closures – Secondary closure within parameter of primary closure
Patent
1995-11-06
1997-10-21
Moy, Joseph M.
Receptacles
Closures
Secondary closure within parameter of primary closure
215254, 215213, 2203091, B65D 4132
Patent
active
056787189
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a cap for closing a bottle or similar container having a projecting outer annular ridge in the region of its container aperture, including an inner cap section having a plurality of spring pins each presenting at its free end area an internal retaining projection for engaging behind the annular ridge in a closed position of the cap, including an outer cap section that has a plurality of security projections around the inside of its annular peripheral wall and can be pushed onto the inner cap section in such a way that in the closed position the security projections are located in the area .of the spring pins for securing the latter against a deflecting movement, and further including a sealing element at least partially arranged between the inner cap section and an edge area defining the opening of the bottle or similar container, wherein a disengagement aperture is provided between the security projections on the outer cap section, and wherein after the anti-rotation device has been released both cap sections can be mutually separated by means of turning and then axially pushing the outer cap section in relation to the inner cap section.
BACKGROUND OF THE INVENTION
So-called beaded caps are often used for closing infusion and transfusion bottles. These known beaded caps have an initially cup-shaped cap section placed on the bottle aperture. Provided between the cup-shaped cap section and the edge area defining the bottle aperture is a sealing element in the form of a stopper which is made of elastomeric material and has its cross-sectionally adapted portion pressed into the bottle neck. In order for the beaded cap and the stopper it embraces to be fixed on the bottle neck, the free edge area of the tin cap section is shaped inwards and engages behind the edge of the bottle bead projecting outwards from the bottle neck.
The upper face of the cup-shaped cap section is provided with a circular and generally centrally arranged, penetrable opening defined by rupture joints in the cup-shaped cap section. This penetrable opening can be exposed by removing a top which is firmly connected to the portion of the cup-shaped cap section covering the penetrable opening and is made of plastic material.
To enable that, if required, the contents of the bottle be emptied without any further aid and to permit the various materials of the emptied bottle to then be segregated, the bead of the cup-shaped cap section has to be broken and the closure cap and sealing element have to be detached from the bottle. However sharp edges are often formed or laid bare in this process and may hurt hospital staff, for instance. In addition it is generally not readily possible for the various materials of these known beaded caps to be entirely segregated, because the portion of the tin cap section covering the penetrable opening in the closed position remains at least on the top section. This remaining metal on the top section otherwise consisting of plastic hinders recycling of the plastic material.
German Offenlegungsschrift No. 40 15 510 has disclosed a cap, the constituent sections of which are made entirely of plastic. This cap is held on the bottle by a plurality of spring pins which belong to an inner cap section and each have an internal retaining projection engaging under the bead of the bottle. The inner cap section is secured in the engaged position by an embracing, annular outer cap section. The outer cap section has for this purpose a circumferential, internal security projection supporting the spring pins of the inner cap section in the closed position of the cap. In this closed position, the security projection of the outer cap section in turn engages under locking tongues projecting radially outwardly from the inner cap section, so that the outer and inner cap section are held together immovably in an axial direction.
To enable that the known cap be removed from the bottle and the two cap sections be separated from each other, the outer cap section in the form of a slide ri
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Gill Fred
Morris Dave
Moy Joseph M.
The West Company Deutschland GmbH
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