(under the class definition) Subject matter wherein the feeding of the electrode is controlled by means of a device sensitive to the radiant energy generated by the electric discharge.
(1) Note. This subclass includes thermostatic devices which are actuated by the radiant heat of the discharge.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89, and 90, for consumable electric discharge devices provided with thermostats heated by means other than the discharge between the electrodes for moving or controlling the operation of the movable electrode.
SEE OR SEARCH CLASS
250, Radiant Energy, 200, and the classes and subclasses specified in the Notes thereto for photocell controlled electric circuits and photocell apparatus, particularly subclass 205, where the photocell controls the light source which illuminates it.
315, Electric Lamp and Discharge Devices: Systems,
149, for miscellaneous systems for supplying electric current and/or potential to electric lamps and/or electric space discharge devices of the gas or vapor ionization type, the system including a device sensitive to radiant energy (photocell, et cetera).
318, Electricity: Motive Power Systems,
16, for electric motor systems which are controlled by means of radiant electromagnetic waves (e.g., radio waves), subclass 460 for electric motor systems controlled by sonic or supersonic vibrations, and subclass 480 for electric motor systems controlled by radiant energy such as light, infrared rays, etc.
337, Electricity: Electrothermally or Thermally Actuated Switches,
298, for thermally actuated switches of general application.
340, Communications: Electrical,
825.69, and 825.72 are the generic subclasses for the control of apparatus and devices at a distance by means of radio wave energy.
