US PATENT SUBCLASS 322 / 77
.~.~.~.~ Bridge arrangements

Current as of: June, 1999
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322 /   HD   ELECTRICITY: SINGLE GENERATOR SYSTEMS

44  DF  GENERATOR CONTROL {11}
59  DF  .~ With excitation winding and/or circuit control {11}
75  DF  .~.~ Control by circuit impedance {3}
76  DF  .~.~.~ Plural impedances {2}
77.~.~.~.~ Bridge arrangements

DEFINITION

Classification: 322/77

(under subclass 76) Subject matter wherein the plural impedances form a bridge.

(1) Note. A bridge is a four terminal closed circuit impedance network having alternate terminals connected to input and output terminals respectively.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems,

663+, for position servomechanisms which may include a bridge in the error detector circuit and subclass 535 for motor control by means of bridge network impedance control.

323, Electricity: Power Supply or Regulation Systems, 365, for bridge networks.

324, Electricity: Measuring and Testing,

600+, for impedance measuring bridge networks, and subclasses 98+ and 101 for bridge networks utilized in electric meters.

333, Wave Transmission Lines and Networks,

169, for wave filters of the Wheatstone bridge or lattice type.