Heating apparatus having a weight detector

A heating apparatus comprising:

• a housing having a chamber and a door for closing said chamber;
• a power supply means for supplying heating energy to said chamber;
• first means for detecting when said door is closed;
• a table vertically movably mounted in said chamber for supporting a foodstuff thereon;
• support means resiliently supporting said table so that the table oscillates at a frequency determined by the weight of the foodstuff;
• said housing comprising means for transmitting to said table an impact generated upon the closure of said door to cause the table to oscillate at said frequency;
• means for converting said oscillation to a corresponding electrical signal;
• and
• control means connected to be responsive to detection by said first means of the closure of said door for analyzing said signal to determine the weight of the foodstuff and for controlling said power supply means to heat the foodstuff in accordance with the determined weight.

A heating apparatus comprising:

• a housing having a chamber and a door for closing said chamber;
• a power supply means for supplying heating energy to said chamber;
• first means for detecting when said door is closed;
• a table vertically movably mounted in said chamber for supporting a foodstuff thereon;
• support means resiliently supporting said table so that the table oscillates at a frequency determined by the weight of the foodstuff;
• means for causing said table to oscillate at said frequency in response to said door being closed;
• means for converting said oscillation to a corresponding electrical signal;
• and
• control means connected to be responsive to detection by said first means of the closure of said door for analyzing said signal to determine the weight of the foodstuff and for controlling said power supply means to heat the foodstuff in accordance with the determined weight.