US PATENT SUBCLASS 333 / 117
.~.~ Including hybrid-type network

Current as of: June, 1999
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333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

1  DF  PLURAL CHANNEL SYSTEMS {4}
100  DF  .~ Having branched circuits {6}
117.~.~ Including hybrid-type network {4}
118  DF  .~.~.~> Having lumped parameters or impedances {1}
120  DF  .~.~.~> Having hybrid ring junction
121  DF  .~.~.~> Having hybrid-T (e.g., magic-T) {1}
123  DF  .~.~.~> Having coaxial element

DEFINITION

Classification: 333/117

Including hybrid-type network:

(under subclass 100) Systems including coupling one wave transmission line to two or more wave transmission lines in such manner that there is a conjugate relation between at least two of these coupled transmission lines to prevent any interchange of energy between the conjugately related lines.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22, for transmission line terminations for hybrid-type networks.

23, for artificial lines adapted for use in hybrid systems.

24+, for single channel coupling networks. 109, for branched circuits including a directional coupler so that wave energy passing in one direction along a first line will be propagated in the second line in only one direction from the coupling, and wave energy passing in the other direction along the first line will be propagated only in the opposite direction from the coupling.

169, and 170+, for bridge-type filter networks.

SEE OR SEARCH CLASS

323, Electricity: Power Supply or Regulation Systems, 365, for bridge-type impedance systems.

336, Inductor Devices, appropriate subclasses for the structure of transformers per se.

370, Multiplex Communications, appropriate subclasses, particularly

276+, for a duplex system, subclass 308 for a resonant

transfer system, and subclasses 498+ for combining or distributing information via time channels which may include a hybrid circuit.

379, Telephonic Communications,

338+, for repeater systems including hybrid-type networks; and subclasses 402+ for telephone substation circuits including hybrid-type networks.

455, Telecommunications,

7+, for radio repeaters including hybrid networks.