IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0518426
(2010-12-21)
|
등록번호 |
US-8739690
(2014-06-03)
|
우선권정보 |
FR-09 59553 (2009-12-23); FR-10 51407 (2010-02-26) |
국제출원번호 |
PCT/FR2010/052859
(2010-12-21)
|
§371/§102 date |
20120918
(20120918)
|
국제공개번호 |
WO2011/077037
(2011-06-30)
|
발명자
/ 주소 |
- Chameroy, Eric
- Cartigny, Michel Pierre
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
4 |
초록
▼
Provided is a sealing gasket for a cooking utensil for cooking food under pressure, the utensil includes a vessel and a lid that define a cooking enclosure. The gasket having a heel from which at least a first lip projects that is provided with at least one escape window notch that passes through it
Provided is a sealing gasket for a cooking utensil for cooking food under pressure, the utensil includes a vessel and a lid that define a cooking enclosure. The gasket having a heel from which at least a first lip projects that is provided with at least one escape window notch that passes through its thickness, and in that the first lip forms a differential movement member enabling the escape window notch to effect a relative movement relative to the heel when the pressure prevailing inside the cooking enclosure exceeds a predetermined threshold, which relative movement enables said escape window notch to open up a leakage orifice via which the cooking enclosure is put into communication with the outside of the utensil. Cooking utensils for cooking food under pressure such as a pressure cooker are provided.
대표청구항
▼
1. A sealing gasket for a cooking utensil for cooking food under pressure, said utensil comprising a vessel and a lid designed to be mounted on said vessel to define a cooking enclosure, said gasket being designed to be interposed between the lid and the vessel in order to seal said cooking enclosur
1. A sealing gasket for a cooking utensil for cooking food under pressure, said utensil comprising a vessel and a lid designed to be mounted on said vessel to define a cooking enclosure, said gasket being designed to be interposed between the lid and the vessel in order to seal said cooking enclosure, said gasket having a heel from which at least a first lip projects, said gasket being characterized in that the first lip is provided with at least one escape window notch that passes through its thickness, and in that said first lip forms a differential movement member designed to enable the escape window notch to effect a relative movement relative to the heel when the pressure prevailing inside the cooking enclosure exceeds a predetermined threshold, said relative movement enabling said escape window notch to open up a leakage orifice via which the cooking enclosure is put into communication with the outside of the utensil. 2. A gasket according to claim 1, wherein the heel is arranged to come into abutment against a retaining element belonging to the vessel or to the lid and designed to limit the radial expansion of said gasket, and in that the first lip is designed to allow the escape window notch to move radially outwards relative to the heel when said heel finds itself in abutment against the retaining element. 3. A gasket according to claim 1, wherein the first lip allows the escape window notch to travel over a radial stroke relative to the heel that substantially lies in the range 3 mm to 8 mm. 4. A gasket according claim 1, wherein the first lip has a length L between its free end and its root that connects it to the heel, and in that said gasket is designed so that the contact between the lip and the top rim of the vessel is maintained substantially in an intermediate segment of said lip, the distance of the intermediate segment from the free end substantially lying in the range 0.2×L to 0.7×L. 5. A gasket according to claim 1, wherein the first lip has a length L, as measured between its root and its opposite free end, substantially lying in the range 5 mm to 15 mm, and preferably lying in the vicinity of 13 mm. 6. A gasket according to claim 1, wherein the at least one escape window notch is formed by a notch that opens out in a free end of the first lip. 7. A gasket according to claim 6, wherein with the first lip having a length between its free end and the root that connects it to the heel, the notch penetrates into the first lip over a length lying approximately in the range 0.4×L to 0.7×L. 8. A gasket according to claim 1, wherein the first lip is made of an elastomer material, e.g. of silicone or of synthetic rubber, and has a thickness substantially lying in the range 1 mm to 3 mm, and preferably lying in the vicinity of 1.8 mm. 9. A gasket according to claim 1, wherein the heel surrounds the first lip at its periphery and in that a radially outside periphery of said heel is substantially exempt from reinforcements in register with the escape windows notch. 10. A gasket according to claim 1, wherein it has a second lip projecting from the heel, said second lip being stiffer and shorter than the first lip. 11. A gasket according to claim 1, wherein the escape window notch is disposed in such a manner as to be able to co-operate with the lid or with the vessel, when the gasket is mounted the wrong way up in the utensil, in order to form a permanent leakage orifice. 12. A cooking utensil for cooking food under pressure, wherein it is provided with a sealing gasket according to claim 1. 13. A cooking utensil for cooking food under pressure according to claim 12, wherein it has a lid held on a vessel by spaced-apart locking means, such as jaws, said lid having one or more unobstructed portions between said locking means, and in that the sealing gasket is placed in such a manner that at least one escape window notch is situated substantially in register with one of said unobstructed portions, such that the deformation of the corresponding unobstructed portion under the effect of the pressure prevailing inside the cooking enclosure contributes to usefully moving said escape window notch, making it possible to open up a leakage orifice when said pressure exceeds a predetermined threshold.
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