| 摘要 |
A heat retaining dish includes a pressure relief mechanism and has a heat retention material capable of being heated by microwave or other thermal radiation in order to maintain any food placed on the dish at an elevated temperature. The heat retention material is capable of accommodating expansion during heating of the device, and when an overpressure condition occurs as a result of inadvertent overheating, the pressure relief mechanism vents the pressure to the ambient environment. The pressure relief mechanism is an integral part of the wall construction of at least one of the portions making up the housing of the device, and deformation due to overpressure directly causes the opening of the pressure relief mechanism as soon as the housing is deformed sufficiently to open a fluid communication path through an aperture in the wall.
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