(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.
