Receptacles – Closures – Removable closure guided in rotary movement
Patent
1996-01-31
1998-07-28
Shoap, Allan N.
Receptacles
Closures
Removable closure guided in rotary movement
215329, 220288, 426 87, 33700, B65D 4104
Patent
active
057852006
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a closure device for a cylindrical packing of flexible material, said packing being intended for paste products.
Greater and greater demands are being placed on packings being simpler and more environmentally friendly, but combining an environmentally friendly packing with simple use for the user at low price is in many cases very difficult. As regards relatively solid or semisolid products, i.e. products with a paste-like consistency, so-called hose-packings, are used today, which are simple and inexpensive. One problem is, however, that such a packing cannot be reclosed in a simple and satisfactory manner once it has been opened. This means that after use of a portion of the product, it is difficult to store the remaining product in a satisfactory manner.
The purpose of the invention is to remove the above described problem and provide a packing which can be reclosed after a portion of the contents has been removed. This is achieved according to the invention by means of a closure device which has those features claimed herein.
The invention will be described in more detail below with reference to the accompanying drawing, which shows, as an example, a preferred embodiment of the invention and in which:
FIG. 1 is a sideview of a closure device according to the invention mounted on a packing,
FIG. 2 is a plan view seen from above of the closure device shown in FIG. 1,
FIG. 3 is a perspective view of the closure device according to FIGS. 1 and 2, and
FIG. 4 shows a section through a closure device according to a second embodiment of the invention, mounted on a packing.
FIG. 1 shows a cylindrical packing 1, which can be a so-called hose-packing which is known per se. This packing is intended to contain a relatively solid or semisolid product, such as dog or cat food, nut paste, chocolate paste, butter, margarine, liverwurst or other spreadable products.
At the lower end of the packing 1 in FIG. 1, there is a closure device with a closure means 2 according to the invention. The closure means 2 has the shape of an upside down cover with a bottom 3 (see FIGS. 2 and 3) and an essentially cylindrical wall 4, which is made in one piece with the bottom 3 and extends in one direction therefrom.
On its inside, the essentially cylindrical wall 4 is provided with two radially inwardly directed ridges 5, extending helically essentially from the bottom 3 to the free edge of the wall 4. As can be seen, each of the ridges 5 only extends along a portion of the circumference of the wall 4, and the ridges 5 form a short thread with a large pitch angle. It should also be noted that the number of ridges 5 can be greater than 2, e.g. 4, which can be of advantage for achieving stability during use.
As can be seen in FIGS. 1 and 3, the wall 4 on at least a portion 4a closest to the free edge is made slightly conically with a larger diameter at the free edge, i.e. the wall is wider at the top as seen in FIG. 1.
As is particularly evident from FIG. 2, the ridges 5 are evenly distributed around the circumference of the inside of the wall 4. The use of three or four ridges is also suitable, which is, however, not shown in the drawing.
The wall 4 is also provided on its outside with scale markings 6, making it possible to measure out a desired amount of the product in the packing 1, as will be described in more detail below.
The closure device according to the invention functions in the following manner. When the packing 1 has been filled with the desired product, the closure means 2 is mounted in place by being screwed onto the flexible material of the packing 1. The ridges 5 produce threads by pressing in the material in the packing 1 in the packaged product. In this manner, the closure means 2 can be securely screwed fast to the packing 1, said screwing being facilitated by the conical portion 4a of the wall 4. The pitch of the ridges 5 is suitably selected so that the closure means 2 can be screwed fast onto the packing 1 so that it will come into contact with the bottom 3 after being rotated approximately
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Newhouse Nathan
Shoap Allan N.
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