US PATENT SUBCLASS 333 / 248
.~ Waveguide elements and components

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

245  DF  LONG LINE ELEMENTS AND COMPONENTS {5}
248.~ Waveguide elements and components {7}
249  DF  .~.~> Bend
250  DF  .~.~> Active element mounting
251  DF  .~.~> Mode suppressor
252  DF  .~.~> Window
253  DF  .~.~> Including variable impedance
254  DF  .~.~> Connectors and interconnections {2}
258  DF  .~.~> Switch {1}

DEFINITION

Classification: 333/248

Waveguide elements and components:

(under subclass 245) Components and elements which are limited to use with waveguides, and also waveguide elements.

(1) Note. A waveguide may be a hollow dielectric or metal tube or a solid dielectric rod, the wave energy being propagated along the interior of the tube or rod and confined by the walls of the tube or rod.

SEE OR SEARCH THIS CLASS, SUBCLASS:

113, for directional couplers having parallel-guide waveguides.

114, for directional couplers having crossed-guide waveguides.

122, for hybrid-type networks using waveguide.

135, for frequency separation utilizing long line elements including waveguide elements.

157+, for delay lines including long line waveguide elements. 239+, for types of waveguide.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

100, 178 for waveguide structures and accessories which are not limited to electrical use.

174, Electricity: Conductors and Insulators, appropriate subclasses for conduits and transmission line structure limited to electrical use but not having long line characteristics.

285, Pipe Joints or Couplings, appropriate subclasses for pipe couplings not limited to electrical use.

329, Demodulators,

322, for a frequency demodulator including distributed parameter structure and subclass 354 for an amplitude demodulator including distributed parameter structure.

343, Communications: Radio Wave Antennas,

783, for waveguide-type antennas with internal wave refraction means; and subclass 785 for waveguide-type antennas which are of the dielectric type.