System of closure for a pot presenting a non-circular neck

Details System of closure for a pot presenting a non-circular neck System of closure for a pot presenting a non-circular neck

2000-03-31

2001-11-20

Newhouse, Nathan J. (Department: 3727)

Receptacles

Closures

Removable closure guided in rotary movement

C220S298000, C220S301000, C215S332000

Reexamination Certificate

active

06318578

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a pot comprising a neck capable of being obturated by a stopper presenting an upper wall applied on the end face of the neck and a peripheral skirt surrounding the neck, said neck and said skirt comprising cooperation means to allow said neck to be stopped by screwing said stopper.
It relates more particularly to pots intended for receiving cosmetic products or pasty products for body care.
Such pots may be of circular or non-circular shape for questions of aesthetics, but the necks are conventionally cylindrical in order to allow the stoppers to be screwed. In the case of pots of non-circular cross-section, the stopper is often a stopper of the quick-orientation type of which the shape of the outer wall is adapted to the shape of the pot for aesthetic reasons, but the thread of the stopper is circular.
As the neck is cylindrical, consumers have difficulty in recovering with their finger the products contained in the inside corners of the pots of non-circular cross-section, particularly if the pot is of square or rectangular cross-section, as the cross-section of the circular neck is limited.
It is an object of the present invention to minimize the incapacity of the consumers to reach the inside corners of the pots.
The invention achieves its end by reproducing the non-circular shape of the pots on their neck.
SUMMARY OF THE INVENTION
More precisely, the pot according to the invention is characterized in that the neck and the skirt of the stopper present non-circular cross-sections having respectively two orthogonal planes of symmetry passing through their axes, and in that the cooperation means comprise a ring of non-circular contour formed near the end face of the neck and extending radially towards the outside, at least two catches formed on the inner face of the skirt and lying in one of the planes of symmetry of the stopper near the inner face of the upper wall, said catches being intended to cooperate with the lower face of the ring, and the contour of the ring presenting diametrally opposite notches located in a plane offset with respect to the planes of symmetry of said neck in order to allow the passage of the catches when the stopper axially approaches the neck.
The lower face of the ring is advantageously in the form of a ramp to allow the stopper to be screwed.
In order to block the stopper in the position of closure, the lower face of the ring comprises two diametrally opposite stops, intended to block the catches in the position of screwing of the stopper, said notches being located near one of the planes of symmetry of the neck.
The stopper preferably comprises two catches in each of its planes of symmetry.


REFERENCES:
patent: 980743 (1911-01-01), Becher
patent: 1573312 (1926-02-01), Fritz
patent: 2452230 (1948-10-01), Derham
patent: 2542648 (1951-02-01), Flowers
patent: 3292779 (1966-12-01), Colella
patent: 3768691 (1973-10-01), Cobb et al.
patent: 4006837 (1977-02-01), Gates et al.
patent: 4858777 (1989-08-01), Morel

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