US PATENT SUBCLASS 455 / 170.1
.~.~ With mechanical or electromechanical selection

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
150.1  DF  .~ Signal selection based on frequency (e.g., tuning) {13}
170.1.~.~ With mechanical or electromechanical selection {7}
171.1  DF  .~.~.~> Time actuated {1}
173.1  DF  .~.~.~> With automatic frequency control of fine tuning
174.1  DF  .~.~.~> With muting (e.g., silent tuning)
175.1  DF  .~.~.~> With carrier wave preset
176.1  DF  .~.~.~> Combined with band selection
177.1  DF  .~.~.~> Combined with other control (e.g., bandwidth, volume, gain, etc.)
178.1  DF  .~.~.~> With plurality of tunable circuits

DEFINITION

Classification: 455/170.1

With mechanical or electromechanical selection:

(under subclass 150.1) Subject matter including mechanical or electromechanical operating devices (e.g., knobs, push buttons, tuning shafts, movable cores, ganged elements, etc.) for tuning the receiver.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120+, for transmitter tuning which may include manual, mechanical, or electromechanical means for frequency selection.

160.1, for receivers comprising plural selection modes which may include manual, mechanical, or electromechanical selection means.

161.1+, for frequency scanning receivers which may include manual, mechanical, or electromechanical means for frequency selection.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism, 10+, for mechanical radio tuning mechanisms.

334, Tuners, appropriate subclasses for mechanical or electromagnetic type tuners.