US PATENT SUBCLASS 333 / 105
.~.~.~ Having mechanical 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  DF  .~.~ Including switching means {3}
105.~.~.~ Having mechanical switching means {2}
106  DF  .~.~.~.~> Using rotary switching means {1}
108  DF  .~.~.~.~> For waveguide

DEFINITION

Classification: 333/105

Having mechanical switching means:

(under subclass 101) Systems wherein the means for abruptly connecting and disconnecting two or more transmission lines to or from another transmission line is a mechanical element.

(1) Note. The systems in this subclass usually have 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 are classified in Class 178, Telegraphy, and switches in telephone systems are classified in Class 379, Telephonic Communications, see especially subclasses 242+.

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

(4) Note. Examples of the types of mechanical elements used are movable shorting pins, rotating assemblies, and movable transmission lines.

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 breakdown 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).

262, for connection and disconnection of long lines.

SEE OR SEARCH CLASS

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.