This invention belongs to the packaging industry and containers in general.

In general, containers or packages (cans, drums, plastic containers, ardboard etc.) whose contents require an additional tool or implement for use or consume do not include a tool or utensil. There are some exceptions in the case of food such as ice cream, soups or yogurts, in which a spoon is included on the outside of the container or is given to the user when purchasing the unit to be consumed .In most of the cases this supplementary item is not included and the user must solve its absence.

A typical case, to mention one of many, is the can of paint, which requires a certain rod suitable to stir its contents before using it. Users should spend valuable resources (time, money) to deal with this classic dilemma, which includes among its solutions, to pull out a tree branch.

A system has been designed that complements the package or container, providing the user with the tool or utensil inside it, so that when opened, a mechanism will enable such a tool or utensil to emerge from the surface level of the contents of the container or package, ready for the user to use, for example, for consuming (for food), stirring (in the case of a paint can), from one side or lateral space, etc. as it is convenient.

The mechanism to enable the tool or utensil emerges from the level of the package or container, so that the user can immediately use it, may consist of a retractable sleeve-plunger type which is deployed at the time of opening the package or container, forming the tool or utensil required; it can also be a similar system, in which the tool or utensil is driven to emerge by the pressure of an inert compressed gas at the bottom of the mechanism, a spring or any ejector system.

Figure 1 is a complementary system for yogurt containers in side view with its lid open which shows, emerging from inside, the extended retractable handle of a spoon. The system is conveniently attached to one of the side inner walls. Below, there is a complementary top view that lets you see the position of the system.

The system has a hollow outer body (1), with the implement or tool, in this case a spoon (2), in its lower part, constituting an inner body that slides within an outer body. The handle (3) is shown fully extended and fixed at the end of its travel by a self-locking mechanism (6) that allows forming the spoon.

The container (5) has a rail or compartment (4) so that the implement (7) located inside the container is kept in the desired position while the package or container is closed, and is easily removed when the package or container is opened.

References (8) and (9) show complementary views of the implement (7) extended forming a spoon, in front and side views.

References (10) and (11) show complementary views of the implement (7) with the handle stored, in front and side views.

Figure 2 shows an application of the complementary system for paint cans, which in this case stores inside a paddle for stirring or mixing paint.

Best way to make the invention.

A complementary system for packaging or containers consists in a mechanism which is conveniently lodged inside the container or package, storing therein a tool or utensil which emerges and is formed, for its use, at the moment of opening, by a self-retractable sleeve - plunger mechanism.

This complementary system for containers or packages can be used in all types of industries, areas or applications where such packaging or containers require additional tools or utensils that allow its use.