(under the class definition) Subject matter having a transformer connected to the current supply circuit of the discharge device.
(1) Note. The transformer may be connected so as to convert the discharge current to a different value, or may have one of its windings is series or parallel with the discharge electrodes, the other winding being connected to the electrode regulating mechanism.
(2) Note. Continue search in subclass 31 of this class.
(3) Note. Other alternating current consumable electrode discharge devices are classified on the type of discharge or on the type of feed mechanism used to regulate the feed of the electrodes and the search should be for these characteristic features rather than for discharge devices which are disclosed as being particularly suitable for use in alternating current. Particular attention is called to subclasses 23, 24, 34 and 69 of this class, as many of the patents in these subclasses are disclosed as being particularly useful with alternating current.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
57, 70, 276 and 354, and the subclasses specified in the notes to the definition of those subclasses for miscellaneous systems which include a transformer for supplying electric current and/or potentials to electric lamps and electric space discharge devices of the gas or vapor ionization type. See subclasses 57, 70 and 276, where the transformer is in the supply circuit, and subclass 354 where the transformer is in the control circuit of a discharge-control-type space discharge devices. 323, Electricity: Power Supply or Regulation Systems,
247, and 355, and the subclasses specified in the notes to the definitions of those subclasses, for miscellaneous transformer systems and for systems for controlling the current and/or voltage in a single circuit by means including a transformer.
336, Inductor Devices, appropriate subclasses for the structure of transformers and inductive reactors.
