| 摘要 |
PURPOSE: A pot supporting board is provided to stick on the bottom of a hot pot by magnetic force generated from an electromagnet and release the pot when the pot is cold. CONSTITUTION: A supporting plate(20) is made of a non-metallic material, and has an upper and lower side. An electromagnet(30) is buried in the central part of the upper side of the supporting plate. A bimetal switch(40) is embedded at the electromagnet in the supporting plate. A battery(36) is embedded in the supporting plate. The electromagnet, the bimetal switch, and the battery are electrically connected in a series. The bimetal switch is turned on by heat generated from the pot, which is contacted to the upper part of the supporting board. |
