US PATENT SUBCLASS 334 / 21
.~.~.~ Predetermined frequency selector


Current as of: June, 1999
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334 /   HD   TUNERS

17  DF  TUNER UNIT WITH ELECTROMAGNETIC OPERATOR {3}
18  DF  .~ Band scanning or selector circuit {2}
20  DF  .~.~ Motor-operated {4}
21.~.~.~ Predetermined frequency selector


DEFINITION

Classification: 334/21

(under subclass 20) Subject matter wherein the electromagnetic operator is provided with a control system and/or means to select and tune the variable tuning unit to a predetermined position thereby adjusting the tuner to resonate at a particular mean frequency.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7, for push button and/or lever operated tuners which are mechanically adjusted by the pressure exerted upon the button and/or lever to select or position a tuning element in a particular position.

9+, for remote controlled electromagnetic operators which may stop on a predetermined frequency such as, for example, a remotely controlled television tuner.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems, appropriate subclasses, particularly

466+, for motors having control systems that stop the motor at a particular position.