(under subclass 14) Subject matter wherein the continuity of an electrical circuit is normally maintained through a conductive liquid. Upon the occurrence of an excessive current in the circuit the liquid is vaporized or otherwise dispersed or displaced whereupon the circuit is interrupted. In this subclass the conductive liquid comprises the electrothermal element which is directly in the circuit to be controlled which circuit is completely opened when the liquid is in its operated state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80, for electrothermally responsive bimetallically actuated
switches with mercury or other conductive liquid contact means.
331, for thermally responsive expansible or vaporizable fluid actuated switches with a conductive liquid comprising the contact material.
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers, appropriate subclasses, especially 61.47, 81.6, and 182+ for mechanical switches with mercury or other liquid contacts.
219, Electric Heating,
510+, for automatically operated heating device current supply means with thermally responsive means.
315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses, especially
362, for a discharge device with a mercury switch in the circuit.
