[특허]Double wall cooking vessel

Meyer Intellectual Properties Limited

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특허 상세정보

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Double wall cooking vessel

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A47J-027/00 A47J-036/02
미국특허분류(USC)	220/573.1; 220/062.17
출원번호	US-0766221 (2004-01-28)
발명자 / 주소	Cheng,Stanley Kin Sui Tarenga,Roberto
출원인 / 주소	Meyer Intellectual Properties Limited
인용정보	피인용 횟수 : 5 인용 특허 : 7

초록
▼

A dual wall cooking vessel is formed by the impact or friction bonding of the an inner to an outer vessel wherein a laminate of aluminum and copper layers is disposed between the outer surface of the bottom of the inner vessel and the inner surface of the bottom of the outer vessel. The aluminum layers are arranged to surround the copper layer of the uppermost aluminum layer being the upper aluminum layer being thinner than the lower aluminum layer and having a slightly smaller diameter than the copper and aluminum layer. The appropriate dimensions of the aluminum layers and sequence of welding and bonding operation results in the co-extrusion of both aluminum layers into a portion of the adjacent sidewall formed by the gap between the walls of the inner and outer vessel. This co-extruded layers of aluminum within the side walls and the bottom of the vessel improves the heat transfer from the outer vessel to the inner vessel during cooking, but without significantly diminishing the insulating properties of the dual wall vessel that serve to keep the food warm while it is being served.

대표
청구항
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The invention claimed is: 1. A dual wall cooking vessel, the vessel comprising: a) an inner vessel having a bottom portion surrounded by vertical walls terminating at an inner rim to form an inner surface for containing fluids, b) an outer vessel having a bottom portion surrounded by vertical walls terminating at an outer rim to form an inner surface capable of containing fluids and surrounding the inner vessel, c) wherein the inner vessel is nested within the outer vessel such that the inner rim and the outer rim are concentrically aligned with each other, and a cavity is formed between the inner surface of the outer vessel and the outer surface of the inner vessel, d) a thermally conductive material interposed between the inner surface of the outer vessel and the outer surface of the inner vessel, said material bonding the inner and outer vessel together, and extending continuously over the horizontal bottoms of the inner and outer vessel and upward to partially fill a vertical portion of the cavity adjacent to the bottom portion of each of said inner and said outer vessel, wherein a cavity remains in the vertical space between the vertical walls of the inner and outer vessel above the partially filled portion. 2. A dual wall cooking vessel according to claim 1 wherein the inner and outer rim are in contact and welded together to form a substantially hermitic cavity. 3. A dual wall cooking vessel according to claim 1 wherein the rim of the inner vessel flairs outward in a substantially vertical direction and includes a concave upward facing portion for receiving a the mating edge of a cover for the cooking vessel. 4. A dual wall cooking vessel according to claim 3 further comprising a cover that mates with the concave upward portion of the rim to form a waterless cooking vessel. 5. A dual wall cooking vessel according to claim 1 wherein the thermally conductive material comprises one or more layers of aluminum or an alloy thereof. 6. A dual wall cooking vessel according to claim 1 wherein the thermally conductive material comprises a copper sheet interposed between two or more layers of aluminum or an alloy thereof. 7. A dual wall cooking vessel according to claim 6 wherein the wherein the copper sheet is perforated and the aluminum layers extend through the perforations to encapsulate the copper sheet. 8. A dual wall cooking vessel according to claim 5 wherein the aluminum layers have a combined thickness of at least about 3 mm. 9. A dual wall cooking vessel according to claim 1 wherein the thermally conductive material comprises a copper sheet interposed by two laminated sheets of aluminum, each laminate aluminum sheet comprising: a) a hard aluminum alloy inner layer, b) two layers of a softer aluminum or an alloy thereof surrounding the hard aluminum inner layer. 10. A dual wall cooking vessel according to claim 1 wherein the inner vessel is fabricated from stainless steel. 11. A dual wall cooking vessel according to claim 1 wherein the outer vessel is fabricated from stainless steel. 12. A dual wall cooking vessel, the vessel comprising: a) an inner vessel having a bottom portion surrounded by vertical walls terminating at an inner rim to form an inner surface for containing fluids, the vertical wall comprising a single layer of metal, b) an outer vessel having a bottom portion surrounded by vertical walls terminating at an outer rim to form an inner surface capable of containing fluids and surrounding the inner vessel, c) wherein the inner vessel is nested within the outer vessel such that the inner rim and the outer rim are concentrically aligned with each other, and a cavity is formed between the inner surface of the outer vessel and the outer surface of the inner vessel, d) a thermally conductive material interposed between the inner surface of the outer vessel and the outer surface of the inner vessel, said thermally conductive material bonding the inner and outer vessel together, wherein said bonding material has; i) a first portion extending and completely filling the space between the bottoms of the inner and outer vessel, and ii) a second portion extending from the first portion to partially fill the vertical portion of the cavity between the inner and the outer vessel wherein a cavity remains above the second portion, the cavity extending above the second portion to the upper rim of the vessel. 13. A dual wall cooking vessel according to claim 12 wherein the inner and outer rim are in contact and welded together to form a substantially hermitic cavity. 14. A dual wall cooking vessel according to claim 12 wherein the rim of the inner vessel flairs outward in a substantially vertical direction and includes a concave upward facing portion for receiving a the mating edge of a cover for the cooking vessel. 15. A dual wall cooking vessel according to claim 14 further comprising a cover that mates with the concave upward portion of the rim to form a waterless cooking vessel. 16. A dual wall cooking vessel according to claim 12 wherein the thermally conductive material comprises one or more layers of aluminum or an alloy thereof. 17. A dual wall cooking vessel according to claim 12 wherein the thermally conductive material includes at least a portion of a copper sheet interposed between the two or more layers of aluminum. 18. A dual wall cooking vessel according to claim 6 wherein the wherein the copper sheet is contiguous with and extends completely across the adjacent aluminum layers. 19. A dual wall cooking vessel according to claim 5 wherein the aluminum layers have a combined thickness of at least about 3 mm. 20. A dual wall cooking vessel according to claim 12 wherein the thermally conductive material comprises a copper sheet interposed by two laminated sheets of aluminum, each laminate aluminum sheet comprising: a) a hard aluminum alloy inner layer, b) two layers of a softer aluminum or an alloy thereof surrounding the hard aluminum inner layer. 21. A dual wall cooking vessel according to claim 12 wherein the inner vessel is fabricated from stainless steel. 22. A dual wall cooking vessel according to claim 12 wherein the outer vessel is fabricated from stainless steel.

이 특허에 인용된 특허 (7)

이 특허를 인용한 특허 피인용횟수: 5

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특허 상세정보

Double wall cooking vessel

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이 특허에 인용된 특허 (7)

이 특허를 인용한 특허 피인용횟수: 5

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Double wall cooking vessel

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이 특허에 인용된 특허 (7)

이 특허를 인용한 특허 피인용횟수: 5

IPC 상위 출원인

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IPC 상세정보(version : 201201)

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