Bottles and jars – Closures – Retainer
Patent
1990-12-28
1992-05-12
Marcus, Stephen
Bottles and jars
Closures
Retainer
215247, 215263, 215320, B65D 5516, B65D 4128
Patent
active
051119480
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
This invention relates to a cap assembly for a container, comprising an easily deformable plug member and a neck member having an opening, said neck member covering the upper part of the container neck and partially covering said plug member and a cover member for said plug member.
Such an assembly is known from DE-A-3 519 655. In this assembly between the covering member and the neck portion foil sheet is arranged. A plug member is provided with a cavity to introduce a protrusion of the cover member. Except from being complicated by the further foil member the cap assembly according to this specification has the drawback that after removing of cover member, this member can be replaced without any indication of being opened, because the foil sheet is permanently removed. This means that there is no clear evidence that there might be tampered with the contents of the container. Such assemblies are e.g. used in infusion bottles. With these bottles a part of the aluminium foil is removed and the rubber plug is pierced by an injection needle or spike to remove the contents. A further drawback are the several steps needed to place the cap assembly on a container.
The invention aims to obviate these drawbacks. According to the invention this is realized in that said cover member is provided with a cavity, which at least on one location increases in its cross section in the direction of opening, a locking member being engagably positioned within said cavity said locking member consisting of an easily deformable material which is connected to said neck member. By introducing, in the locked position of the cover member, the material of the locking member in a non-releasing cavity, is possible to obtain an indication showing whether the cover member has been released. By the easily deformable nature of the material of the locking member the cover member can be opened. However, after this it is impossible to close the cover member to the original position. Such an indication is of considerable importance with many applications of the cap assembly according to the invention. Examples are a guarantee that after filling of the bottle the cover member has not been opened and the locking member, which has to be pierced by an injection needle, is sterile.
EP-A3-0 085 360 discloses a deformable plug member having a cover such as a removable ring. In the plug guiding recesses are provided to guide an infusion needle in the plug. The plug comprises an insert part being filled with filling material. The plug is inserted in the opening of a container. In contrast to the subject application no neck portion is provided having an opening cooperating with a cavity in the cover member to provide an indication whether or not the cap assembly has been opened. According to a preferred embodiment of the invention the locking member and the plug member comprises an integrally formed part. According to a further preferred embodiment the locking member provides the seal between the cover member and the neck portion. The cover member and the neck member can be simply realized as one part connected through a film hinge. To further secure the position of the cover member with regard to the cap assembly snap means can be provided. As material for the plug member and/or the locking member thermoplastic rubber are preferred. Both materials have the property of being non-toxic, so that a cap assembly embodying these materials can be used for all kinds of pharmacological applications. The cap assembly described above can be provided as a part which can be connected to a container in one simple step.
The invention also relates to a method for producing a cap assembly for a container, comprising an easily deformable plug member and a neck member having an opening, said neck member covering the upper part of the container neck and partially covering said plug member, and a cover member for said plug member, wherein a locking member is injection moulded into a cavity which is provided in said cover member, said cavity having at least at o
REFERENCES:
patent: 579013 (1897-03-01), Schenker
patent: 1295240 (1919-02-01), Unruh
patent: 3499568 (1970-03-01), Riera
patent: 3756445 (1973-09-01), Hedgewick
patent: 3871545 (1975-03-01), Bereziat
patent: 4187893 (1980-02-01), Bujan
patent: 4431110 (1984-02-01), Roth
patent: 4482069 (1984-11-01), Stadler
patent: 4573602 (1986-03-01), Goldberg
patent: 4772558 (1988-09-01), Hammann
patent: 4893734 (1990-01-01), Chlystun
Caretto Vanessa
Marcus Stephen
Microplast B.V.
LandOfFree
Cap assembly and method for producing such an assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cap assembly and method for producing such an assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cap assembly and method for producing such an assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2423797