US PATENT SUBCLASS 333 / 101
.~.~ Including switching means

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}
101.~.~ Including switching means {3}
102  DF  .~.~.~> Having gyromagnetic operating means
103  DF  .~.~.~> Having semiconductor operating means {1}
105  DF  .~.~.~> Having mechanical switching means {2}

DEFINITION

Classification: 333/101

Including switching means:

(under subclass 100) Systems with means for abruptly connecting and disconnecting two or more transmission lines to or from another transmission line.

(1) Note. The systems in this subclass usually having means to reduce reflected waves resulting from impedance discontinuities or irregularities caused by the presence or operation of the connecting and disconnecting means.

(2) Note. Plural circuit switches restricted to use in a particular art are sometimes classified with the art, for example, switches in telegraph systems and switches in telephone systems are classified elsewhere.

(3) Note. Variable power dividers which are classified below normally have a continuously variable transfer of power which is not abrupt.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2+, for similar systems having automatically controlled means.

3, for automatically controlled line substitution systems.

13, for single channel resonator type break-down discharge systems where the resonator-discharge device is used to effectively short circuit or open circuit the line (e.g., R-T or T-R systems). 258, and 262, for transmission line elements for single channels which may be used to perform a switching or blocking function.

SEE OR SEARCH CLASS

178, Telegraphy, for switches in telegraph systems

200, Electricity: Circuit Makers and Breakers, particularly

1+, and 19.01+ for plural circuit switches of general utility and not limited by claimed structure to use with long lines.

307, Electrical Transmission or Interconnection Systems, particularly

23, 38+, 64+, 80+, 85+, 98+, and 112+ for miscellaneous electrical distribution systems which include switching.

331, Oscillators,

49, for plural oscillator systems provided with means for selectively connecting one or more of two or more oscillators to a common output circuit.

379, Telephonic Communications, for switches in telephone systems, especially

242+,.