Container with a screwed cap for nail varnish, liquid mascara or

Details Container with a screwed cap for nail varnish, liquid mascara or Container with a screwed cap for nail varnish, liquid mascara or

1997-01-09

1999-01-26

Bratlie, Steven A.

Coating implements with material supply

Supply container and independent applicator

Applicator includes container closure or overlies material

401126, 215331, A46B 1100, B65D 4104

Patent

active

058631453

DESCRIPTION:

BRIEF SUMMARY
GENERAL DESCRIPTION OF THE INVENTION

1. Field of the Invention
The invention pertains to a container with a screwed cap for nail varnish, liquid mascara or the like, in which the closed position of the screwed cap in relation to the container is defined by at least one end stop and in which a cover is fitted on the screwed cap to be integral in rotation therewith.
2. Prior Art
Containers of this type frequently have an exterior decoration in the form of an imprint to present a decorative and sales promoting appearance, whereby this decoration--be it in the form of a graphic design or lettering--frequently extends from the outer surface of the cover onto the container itself.
It is considered a major defect in the packaging, especially of high-quality products, if an inaccurate positioning of the screwed cap or cover in relation to the container results in a misalignment, either during the initial machine-fitting or during later use, resulting in an adverse effect on the appearance of the overall decoration.
The thread between the screwed cap and the container neck has therefore been designed with stops of a highly intricate geometry to produce an audible and tactile engaging effect and ensure a reliable alignment in the end position.
However, until now the occurrence of tolerances or misalignments between the cover and the screwed cap during the initial fitting could not always be effectively prevented, thus rendering ineffectual the precision initially gained with the stops.


OBJECT AND SUMMARY OF THE INVENTION

The aim of the invention is therefore to further develop a container of the above type so that the cover can be machine-fitted onto the screwed cap in a fully automatic process while ensuring an optimum alignment.
This aim is attained according to the invention with a peripheral annular shoulder having a thread-like pitch formed on the outer surface or the inside of the cover to produce a stop shoulder on the transition region between the beginning and the end of said annular shoulder, and with a guide slot extending downwards from the stop shoulder and aligned therewith, and with a guide rib, the width of which corresponds to the width of the guide slot, formed on the inside of the cover or the outer surface of the screwed cap and extending parallel to the longitudinal axis.
When the cover is placed onto the screwed cap and rotated at any angle in relation to the screwed cap during machine-fitting, the underside of the guide rib glides along the annular shoulder until it reaches the stop shoulder, so that the guide rib can engage into the guide slot and the cover can be completely pushed down onto the screwed cap in a defined angle in relation to the screwed cap.
The annular shoulder is advantageously designed to curve around slightly less than 360.degree.. However, this is not an essential requirement for the implementation of the invention. In one design of the invention the annular shoulder has a constant pitch, but other designs are also perceivable in which the annular shoulder curves along a longer section of its peripheral angle with no pitch in relation to a plane perpendicular to the longitudinal axis, and only forms a pitch or slope along a short angular section in front of the guide slot.
In a preferred design of the invention, the annular shoulder has a pitch of approximately 2 mm per 360.degree..
The outer surface or the inside, respectively, of the screwed cap or the cover respectively, are advantageously furthermore designed with a plurality of slots running parallel to each other and to the longitudinal axis and with corresponding ribs formed on the inside of the cover or on the outer surface of the screwed cap, respectively. These additional ribs create a defined interconnection with which the proper alignment of the cover with the screwed cap will be effectively maintained during later use.
For the sake of simplicity, the following is based on the assumption that the slots are formed on the outer surface of the screwed cap whereby, as explained above, the same effect can be at

REFERENCES:
patent: 4271974 (1981-06-01), Quinard
patent: 4273248 (1981-06-01), Lehmann

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