US PATENT SUBCLASS 335 / 102
.~.~ Polyphase


Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
99  DF  .~ Alternating or fluctuating current type {6}
102.~.~ Polyphase


DEFINITION

Classification: 335/102

(under subclass 99) Subject matter wherein the device is specifically adapted to operate in response to the currents in the respective phases of a multiphase or polyphase system, whereby one polyphase network is connected to another similar polyphase network through the device or wherein the device consists of a plurality of magnetic windings and having supplied to each winding an operating current at a phase angle different from that applied to each of the others.

SEE OR SEARCH THIS CLASS, SUBCLASS:

8+, for polyphase automatic circuit interrupter devices.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers, appropriate subclasses for nonmagnetically operated switches of the multiphase type.

307, Electrical Transmission or Interconnection Systems,

13+, for polyphase systems in general that may include phase switches. An subclasses 112+ for plural phase switches especially indented subclass 127 for phase sequence responsive type. 361, Electricity: Electrical Systems and Devices,

1+, for safety and protection systems which may utilize plural phase type devices.