Bottles and jars – Closures – Frangible member or portion
Patent
1994-04-20
1997-02-18
Shoap, Allan N.
Bottles and jars
Closures
Frangible member or portion
215250, 215252, 215253, 215254, 206807, 220281, B65D 4134
Patent
active
056034229
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention concerns a safety closure of plastic material, namely a closure which will not permit the opening of the receptacle that it closes without this opening being made detectable, for example, by tearing or the separation of a portion of this closure.
The present invention relates more particularly, but not exclusively, to a safety closure adapted to close wine bottles.
2. Description of Related Art
Traditionally, wine bottles are closed by corks, then wrapped, these wrappings totally enclosing the top of the bottle and extending for several centimeters along the neck of the bottle. These wrappings are generally of colored tin or provided with inscriptions or decorations.
Good quality cork is becoming more and more scarce and more and more expensive, and therefore metal screw closures have been provided for bottles of wine. These closures comprise a ring of low height, two to three millimeters, pinched in below the rim on the neck of the bottle and a pre-weakened rupture line permitting separating this ring of the closure during its unscrewing, thus ensuring the safety function of being able to detect when the bottle has been opened. These metallic closures comprise a sealing gasket of plastic material or cardboard covered with a metal sheet, generally of aluminum, and are completely satisfactory at least for white wines.
These metallic closures nevertheless have substantial drawbacks which are: whose neck is covered by wrapping for three to four centimeters. metallic ring which detaches from the closure during unscrewing remains on the neck of the bottle and can be removed only with great difficulty.
SUMMARY OF THE INVENTION
The object of the present invention is the provision of a safety closure, particularly for the closure of wine bottles, permitting the replacement of cork and giving to the closed bottle the traditional appearance while avoiding during its opening leaving a part of the closure fixed to the neck of the bottle.
The present invention has for its object a safety closure, particularly for wine bottles, that overcomes the above drawbacks and that comprises the characteristics recited in claim 1.
BRIEF DESCRIPTION OF THE DRAWING
The accompanying drawings illustrate schematically and by way of example several embodiments of closures according to the present invention.
FIG. 1 is an axial cross section of a first embodiment of a closure in service position closing a bottle.
FIG. 2 is an elevational view of the closure shown in FIG. 1.
FIG. 3 is an elevational view of the closure shown in FIGS. 1 and 2, its skirt being partially torn off.
FIGS. 4-6 are views similar to FIGS. 1-3 of a second embodiment of the closure.
FIGS. 7 and 8 show a practical form of execution of the closure according to the invention.
FIG. 9 shows a variant of the closure in which the skirt is not provided with longitudinal tearing-off means.
FIG. 10 shows a variant of the closure comprising tearing-off means on the skirt.
FIGS. 11 and 12 are detail views of skirt variants.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The safety closure for bottles with screw threads, and particularly for bottles of wine, as shown in FIGS. 1-2, is injection molded from plastic material, generally food quality polyethylene.
This closure comprises a rigid head 1 which can be provided on its periphery with ribs or other formations facilitating its gripping and its rotation. The internal cylindrical surface of this head is provided adjacent its top surface 2, with a screw-thread 3 adapted to coact with a screw head 4 carried by the external surface of the neck 5 of the bottle. The internal surface of this head closely matches the external surface of the neck down to the lower edge of its cylindrical bulge 6.
The inside top surface of the head 1 receives a sealing gasket 7 constituted by a ring of compressible plastic material covered on at least its exposed surface with a metallic sheet, generally a sheet of aluminum. The exposed surface of this sheet or these me
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Hylton Robin A.
Shoap Allan N.
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