초록 ▼

A time-temperature indicator, particularly adapted for use with closed sterilizing or cooking vessels, such as pressure cookers and sterilizers, to indicate at what temperature and for how long material contained within the vessel has been heating or cooking, is disclosed. The indicator uses a mater

A time-temperature indicator, particularly adapted for use with closed sterilizing or cooking vessels, such as pressure cookers and sterilizers, to indicate at what temperature and for how long material contained within the vessel has been heating or cooking, is disclosed. The indicator uses a material such as a thermochromic material which changes color at a predetermined temperature, and is constructed to provide readings around a 360°angle. The indicator may, for example, be constructed as a knob on the lid of a pressure cooker or sterilizer or the link or may be attached to or as a replacement for an existing knob.

대표청구항 ▼

A device having a readout over 360°angle for indicating the temperature of a material within a closed heating vessel, over a period of time, comprising: a transparent member configured as a hollow cylinder; a layer of thermochromic material located within and extending entirely around an inner surfa

A device having a readout over 360°angle for indicating the temperature of a material within a closed heating vessel, over a period of time, comprising: a transparent member configured as a hollow cylinder; a layer of thermochromic material located within and extending entirely around an inner surface of said transparent hollow cylindrical member so as to be visible through said transparent hollow cylinder over a 360°angle; means for closing an end of said transparent member; and means for maintaining at least said layer of thermochromic material in thermal contact with an associated heating vessel, thereby providing for readout of the temperature over a 360°angle.