Self-heating or self-cooling containers

Details Self-heating or self-cooling containers Self-heating or self-cooling containers

A - Human Necessities

47

J

A47J 36/28 (2006.01) B65D 81/34 (2006.01) F25D 31/00 (2006.01) F25D 5/02 (2006.01)

Patent

CA 2387499

A self-heating container (10) has an internal cavity (22) for its contents and an external cavity (20) for a heating mechanism, for example, comprised of first and second chemically reactive materials which are arranged to be mixed when heating is required. A protective cover (52) is engaged on the can over the top end member (14) to prevent access to a ring-pull opener (50). The protective cover (52) has been shrunk onto the can such that it cannot be removed normally. However, when the can and its contents have been heated to the predetermined temperature by operation of the heating mechanism, the protective cover (52) expands in size relative to the can (10) and is removable. The ring-pull opener (50) may then be opened to enable the contents to be dispensed. After opening, the cover (52) may be reengaged on the can to provide an insulated drinking lip which protects the consumer against the heat of the can and provides a more pleasant surface to drink from than the edge of the can itself.

Cette invention concerne un réservoir auto-chauffant (10) comportant une cavité interne (22) destinée à recevoir le contenu et une cavité externe (20) renfermant un dispositif de chauffage lui-même constitué d'un premier et d'un second matériaux chimiquement réactifs disposés pour pouvoir être mélangés si un chauffage s'impose. Une coiffe de protection (52) encastrée sur l'élément supérieur (14) du récipient interdit l'accès à un couvercle à languette d'ouverture (50). La coiffe de protection (52) est sertie sur le récipient et ne peut donc normalement pas être retirée. Toutefois, une fois le récipient et de son contenu chauffés à une température déterminée par le dispositif de chauffage, la coiffe de protection (52) se dilate par rapport au récipient (10) et peut être retirée. Le couvercle à languette d'ouverture (50) peut alors être ouvert. Après ouverture, la coiffe (52) peut être remise en place et faire office de bec verseur isolé contre la chaleur du récipient d'un contact plus agréable que le bord du récipient.

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