Heated container having chemical heating mechanism
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47J-039/00
A47G-023/04
F24J-001/00
A47J-036/28
출원번호
US-0462777
(2014-08-19)
등록번호
US-9360233
(2016-06-07)
발명자
/ 주소
Baker, Gerald
Jung, Harley
출원인 / 주소
Tempra Technology, Inc.
대리인 / 주소
Sheehan Phinney Bass & Green PA
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A self-heating food container configured to hold food and to heat food within the container is provided. The container includes a body wall. A space is defined within the body wall. A chemical heater is located within the space, which upon activation, is configured to generate heat, thereby increasi
A self-heating food container configured to hold food and to heat food within the container is provided. The container includes a body wall. A space is defined within the body wall. A chemical heater is located within the space, which upon activation, is configured to generate heat, thereby increasing the temperature of the contents cavity.
대표청구항▼
1. A self-heating assembly for food, the assembly comprising: an outer container comprising a sidewall, a bottom wall and an inner surface defining a cavity;an inner container received within the cavity of the outer container, the inner container comprising a sidewall, a bottom wall, an inner surfac
1. A self-heating assembly for food, the assembly comprising: an outer container comprising a sidewall, a bottom wall and an inner surface defining a cavity;an inner container received within the cavity of the outer container, the inner container comprising a sidewall, a bottom wall, an inner surface and an outer surface, the inner surface of the inner container defining an interior cavity configured to hold food;a reaction space defined between the inner surface of the outer container and the outer surface of the inner container;a chemical heat source positioned within the reaction space and in thermal communication with the inner container; andan activation element configured to be manipulated by a user to trigger heat generation by the chemical heat source to heat food held within the interior cavity of the inner container,wherein the chemical heat source comprises one or more heating chemicals in a frangible and hermetically sealed shell and a solid chemically reactive material in the reaction space,wherein the activation element comprises a cutting structure located within the reaction space, the cutting structure configured to pierce the hermetically sealed shell upon manipulation of the activation element by the user, thereby allowing the one or more heating chemicals to mix with the solid chemically reactive material; anda temperature sensitive deactivation element located within the reaction space between the outer container and the inner container and configured to decrease an amount of heat generated by the chemical heater when a threshold temperature is reached within the food product,wherein the temperature sensitive deactivation element releases a quenching material at a predetermined temperature within the food product that mixes with the chemical heat source to decrease the heat generated by the chemical heat source, andwherein the temperature sensitive deactivation element comprises a ring adhered to the outer surface of the inner container. 2. The self-heating assembly of claim 1, wherein the activation element is configured such that when a user applies a physical force to the activation element, the applied force causes the cutting structure to pierce the hermetically sealed shell. 3. The self-heating assembly of claim 1, wherein the inner container is rotatable relative to the outer container, wherein rotation of the inner container causes the activation element to trigger heat generation. 4. The self-heating assembly of claim 1, wherein the ring is formed of a material having a melt temperature selected such that, when a portion of the ring in contact with the outer surface of the inner container reaches the melt temperature, the portion of the ring in contact with the outer surface of the inner container melts, disengaging from the outer surface of the inner container, allowing the quenching material to drop into contact with the chemical heat source by force of gravity. 5. The self-heating assembly of claim 4, wherein the ring is formed from a wax material and the quenching material is embedded within the wax material. 6. A self-heating assembly configured to hold food contents and to heat the food contents within the assembly, the assembly comprising: an inner cup having an inner surface, an outer surface and an upper end;a food product cavity defined by the inner surface of the inner container, the food product cavity configured to hold the food contents of the container;a reaction space between an inner surface of an outer cup and the outer surface of the inner cup;a chemical heater located within the reaction space, which upon activation, is configured to generate heat increasing the temperature of the inner cup, wherein the chemical heater comprises a first chemical in a hermetically sealed exterior shell and a second chemical in the reaction space outside the hermetically sealed exterior shell;an activation element comprising a cutting structure located within the reaction space, the cutting structure configured to activate heat generation upon manipulation of the activation element by a user, anda deactivator located within the reaction space and configured to decrease the amount of heat generated by the chemical heater when a threshold temperature is reached within the food product,wherein the deactivator releases a quenching material when the threshold temperature is reached within the food product, the quenching material mixing with the chemical heat source to decrease the heat generated by the chemical heat source,wherein the deactivator is located in the reaction space above the chemical heater such that the quenching material falls into contact with the chemical heater upon release, andwherein the deactivator comprises a ring attached to the outer surface of the inner cup, the ring formed of a material having a melt temperature selected such that, when the outer surface of the inner cup reaches; the melt temperature of the ring, a surface of the ring in contact with the outer surface of the inner cup melts, disengaging from the outer surface of the inner cup, thereby allowing the quenching material to fall into contact with the chemical heater. 7. The self-heating food assembly of claim 6, wherein the ring of material is a wax material and the quenching material is embedded within the wax material. 8. The self-heating food assembly of claim 6, further comprising: an outer container comprising a sidewall, a bottom wall and an inner surface defining a cavity, whereinthe inner cup is a metal container and is positioned within a cavity of the outer container, the inner metal container comprising a sidewall, a bottom wall, an inner surface and an outer surface. 9. A self-heating assembly for food, the assembly comprising: an outer container comprising a sidewall, a bottom wall and an inter surface defining a cavity;an inner container received within the cavity of the outer container, the inner container comprising a sidewall, a bottom wall, an inter surface and an outer surface, the inner surface of the inner container defining an interior cavity configured to hold food;a reaction space defined between the inner surface of the outer container and the outer surface of the inner container;a chemical heat source positioned within the reaction space and thermal communication with the inner container; andan activity element configured to be manipulated by a user to trigger heat generation by the chemical heat source to heat food held within the interior cavity of the inner container,wherein the chemical heat source comprises one or more heating chemicals in a frangible and hermetically sealed shell and a solid chemically reactive material in the reaction space,wherein the activation element comprises a cutting structure located within the reaction space, the cutting structure configured to pierce the hermetically sealed shell upon manipulation of the activation element by the user, thereby allowing the one or more heating chemicals to mix with the solid chemically reactive material, andwherein the activation element comprises a cutter,the assembly further comprising:a cap, wherein the cap is configured such that an application of physical force or moment force to the cap relative to the outer container causes the cap, the inner container, and the cutter to rotate around a longitudinal axis of the container. 10. The self-heating food assembly of claim 9, wherein the cutter comprises a sloped surface and a leading edge, and wherein the rotation of the cap, the inner container and the cutter relative to the outer container causes the sloped surface and the leading edge of the cutter to cut into the hermetically sealed exterior shell of the chemical heat source. 11. The self-heating food assembly of claim 10, wherein the chemical heat source further comprises a material disposed below the inner container and the cutter, wherein the material disposed below the inner container and the cutter is configured to exothermically react with the chemical located within the exterior shell of the chemical heat source when intermixed. 12. A self-heating assembly for food, the assembly comprising: an out container comprising a sidewall, a bottom wall an inner surface defining a cavity;an inner container received within the cavity of the outer container, the inner container comprising a sidewall, a bottom wall, an inter surface and an outer surface, the inner surface of the inner container defining an interior cavity configured to hold food;a reaction space defined between the inner surface of the outer container and the outer surface of the inner container;a chemical heat source positioned within the reaction space and in thermal communication the inner container; andan activation element configured to be manipulated by a user to trigger heat generation by the chemical heat source to heat food held within the interior cavity of the inner container,wherein the chemical heat source comprises one or more heating chemicals in a frangible and hermetically sealed shell and a solid chemically reactive material in the reaction space,wherein the activation element comprises a cutting structure located within the reaction space, the cutting structure configured to pierce the her sealed shell upon manipulation of the activation element by the user, thereby allowing the one or more heating chemicals to mix with the solid chemically reactive material,wherein the chemical heat source comprises:a plurality of the frangible and hermetically sealed shells containing the one or more chemicals, wherein each one of the hermetically sealed exterior shells is positioned in an annular space between a side surface of inner container and a side surface of the outer container. 13. The self-heating food assembly of claim 12, wherein an open area in the annular space is provided to spatially separate adjacent hermetically sealed exterior shells, the self-heating food assembly further comprising one or more vents in the outer container, wherein each vent is gas permeable but resistant to penetration by liquid, andwherein each one of the vents is positioned in one of the open areas. 14. A self-heating assembly for food, the assembly comprising: an outer container comprising a sidewall, a bottom wall and an inter surface defining a cavity;an inner container received within the cavity of the outer container, the inner container comprising a sidewall, a bottom wall, an inner surface and an outer surface, the inner surface of the inner container defining, an interior cavity configured to hold food;a reaction space defined between the inner surface of the outer container and the outer surface of the inner container;a chemical heat source positioned within the reaction space and in thermal communication with the inner container; andan activation element configured to be manipulated by a user to trigger heat generation by the chemical heat source to heat food held within the interior cavity of the inner container,wherein the chemical heat source comprises one or more heating chemicals in a frangible and hermetical sealed shell and a solid chemically reactive material in the reaction space,wherein the activation element comprises a cutting structure located within the reaction space, the cutting structure configured to pierce the hermetically sealed shell upon manipulation of the activation element by the user, thereby allowing the one or more heating chemicals to mix with the solid chemically reactive material;a plurality of first vent openings in the inner container;a plurality of second vent openings in the outer container,wherein each first vent opening moves into alignment with a corresponding one of the second vent openings when the activation element is manipulated by the user to initiate an exothermic chemical reaction in the self-heating assembly. 15. The self-heating assembly of claim 14, wherein each of the second vents is formed from an opening in. outer container, and a vent cover affixed over the opening in the outer container, thereby providing a gas permeable vent that is resistant to penetration by liquids. 16. A self-heating food assembly comprising: a cup assembly comprising: an inner cup; andone or more cutting structures fixedly coupled to the inner cup, such that rotation of inner cup about a longitudinal axis also causes rotation of the one or more cutting structures about the longitudinal axis,a packet assembly comprising; a liquid packet carrier; andone or more liquid packets disposed in an annular space between the liquid packet carrier and the inner cup, each liquid packet comprising an exterior shell surrounding a liquid,wherein the packet assembly is positioned relative to the cup assembly such that the one or more cutting structures are positioned relative to the one or more liquid packets such that rotation of cup assembly within the packet assembly causes each cutting structure to pierce, compress, rupture, or cut an adjacent one of the one or more liquid packets;a powder assembly disposed below and adjacent to the cup assembly and the packet assembly, wherein the powder assembly comprises: one or more surfaces that define an internal cavity containing a material configured to exothermically react with the liquid in the one or more liquid packets when intermixed, andwherein one or more of the surfaces of the powder container is formed of a liquid-permeable material, a liquid soluble material, or a liquid reactive material, such that the liquid will penetrate into or through the powder container and contact the material inside the powder container to initiate the exothermic reaction; anda cap fixedly connected to the inner cup such that rotation of the cap causes the inner cup to rotate as well.
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이 특허에 인용된 특허 (6)
James Dean B. (Saratoga CA), Acid-base fuels for self heating food containers.
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