(under subclass 778) Subject matter wherein the power supplied to the dielectric heating apparatus is automatically regulated according to a preselected result.
(1) Note. The automatic control means must include means to sense a condition and means to vary a condition in response to the sensed condition. Means to maintain a condition constant is included as an automatic control where the system includes means to sense deviations from the condition and to adjust the system to maintain the desired value constant.
(2) Note. The automatic control may be in response to or control the working temperature, duration of heating cycle, tuning of the load circuit or power supply, or the coupling impedance between the power supply and heating apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
663+, for inductive heating systems with automatic control.
704+, for a microwave heating device with a load condition sensor.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems, appropriate subclasses for the miscellaneous power distribution and supply systems.
323, Electricity: Power Supply or Regulation Systems, appropriate subclasses for the miscellaneous systems for controlling phase angle or voltage and/or current magnitude and for the miscellaneous transformer and impedance systems.
333, Wave Transmission Lines and Networks,
34+, for coupling networks for coupling electric energy which varies over a band of frequencies to another transformer line or network.
