초록 ▼

A self-heating container and a method of manufacturing the container. The container has a simple structure in which the metallic outer body holds the consumable product, and a metallic inner body and plastic housing contain the two components which react to produce the heat for the self-heating func

A self-heating container and a method of manufacturing the container. The container has a simple structure in which the metallic outer body holds the consumable product, and a metallic inner body and plastic housing contain the two components which react to produce the heat for the self-heating function. A lower lid is crimped over flanges on the lower ends of the inner body and the outer body, forming a double seal. When a flexible portion of the housing is pressed, a seal is punctured, causing the two components to mix and generate heat through an exothermic chemical reaction which heats the contents of the container.

대표청구항 ▼

1. A self-heatable container for a consumable product, comprising: a metallic hollow outer body for receiving the consumable product, having an upper edge forming an upper flange and a bottom edge forming a lower flange, the outer body comprising an upper part having a length and a diameter and a lo

1. A self-heatable container for a consumable product, comprising: a metallic hollow outer body for receiving the consumable product, having an upper edge forming an upper flange and a bottom edge forming a lower flange, the outer body comprising an upper part having a length and a diameter and a lower part having a length and a diameter, the diameter of the lower part being smaller than the diameter of the upper part, with a tapered area formed between the upper part and the lower part;an upper lid fastened around a rim to the upper flange;a metallic inner body, received within the outer body, having a length greater than the length of the lower part of the outer body, a diameter smaller than the diameter of the lower part of the outer body, a closed upper end and a lower end forming a projecting flange, the projecting flange being sized such that when the inner body is fully received within the lower part of the outer body, the projecting flange overlaps the lower flange of the outer body, supporting the inner body within the outer body;a housing, received within the inner body, comprising: a cylindrical body having a diameter smaller than the diameter of the inner body, an upper end and a lower end and a length therebetween, the length of the cylindrical body of the housing being smaller than the length of the inner body,a lip on the lower end of the cylindrical body having a diameter larger than the diameter of the inner body, such that when the housing is received within the inner body, the housing is supported by the lip, and a chamber is formed between the upper end of the cylindrical body of the housing and the closed upper end of the inner body;a flexible base having a domed center, a rim of the flexible base being connected to the lower end of the cylindrical body of the housing, inside the lip;a projection having a lower end centrally mounted on an upper surface of the flexible base, an upper end extending into the cylindrical body of the housing, and a length between the upper end and the lower end;a seal closing the upper end of the cylindrical body of the housing; andthe length of the projection being sufficient that when the domed center of the flexible base is depressed, the upper end of the projection protrudes from the upper end of the housing a distance sufficient to puncture the seal; anda lower lid having a rim and diameter sized such that when the lower lid is placed over the projecting flange of the inside body and the lower flange of the outer body, the rim of the lower lid can be crimped over the projecting flange of the inner body and the lower flange of the outer body, forming a double seal. 2. The self-heatable container of claim 1, wherein the cylindrical body of the housing is made of plastic. 3. The self-heatable container of claim 1, further comprising a filter closing the lip on the lower end of the housing. 4. The self-heatable container of claim 1, further comprising a determined amount of a chemical which, upon contact with water, will give rise to an exothermic reaction, in the chamber between the upper end of the housing and the upper end of the inner container, and an amount of water, held in the cylindrical body of the housing by the seal, such that when the domed center of the flexible base is depressed, the upper end of the projection punctures the seal, allowing the water to mix with the chemical in the chamber, causing an exothermic reaction and heating the container. 5. The self-heatable container of claim 4, in which the chemical is calcium oxide. 6. The self-heatable container of claim 1, in which the projection has a square cross-section having four sides meeting at right angles, the sides having cuts such that the projection forms four L-shaped fingers. 7. The self-heatable container of claim 1, in which the seal is made of aluminum foil. 8. The self-heatable container of claim 1, in which the lip has a plurality of openings to provide an air passage from outside atmosphere to the inner body.