(under the class definition) Assemblies particularly adapted for mechanically rotating one or more shafts of electronic tuning devices into desired angular positions.
(1) Note. The art is directed to the positioning of radio tuning shafts having indicating means and/or variable condensers associated therewith for adjustment.
(2) Note. Electrically actuated dial operators are not here, even though claimed in combination with mechanical operators for these subclasses. They will be found in Class 192, Clutches and Power-Stop Control, subclasses 138+, and in Class 318, Electricity: Motive Power Systems, appropriate subclasses (including particularly subclasses 560+, which has the follow-up type motor controls). The line between these two classes is stated in the class definition of Class 318, Lines With Other Classes, Load Device Driven by the Motor (Including Power, Motion, Force, or Torque Transmitting Devices, Motor Systems and Power, Motion, Force, or Torque Transmitting Devices, and under the reference to Class 192 under "SEARCH CLASSES" at the end of the class (318) definition.
(3) Note. These subclasses will take the recitation of a condenser, inductance, transformer or a radio tuner by name only when claimed in combination with shaft positioning means. Whenever significant structure of the condenser, inductance, transformer, or tuner are recited, the devices will be classified in Class 455, Telecommunications, particularly subclasses 150.1+ where radio tuner structure is recited. Class 334, Tuners, appropriate subclasses for radio tuner structure, per se, or Class 336, Inductor Devices, appropriate subclasses where variable transformer or inductance structure is recited. Where the operator is merely a screw gearing and the tuner is recited by name only, the search should be continued in this class (74), subclass 424.8.
(4) Note. These subclasses will take the shaft positioning means with respect to its support in combination with indicating means to indicate the position, adjustment or movement of the shaft. And see the Search Note to the Signals and Indicators class, below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20, through 110 inclusive, for nonintermittent type mechanical movements. 111+, for intermittent grip type mechanical movements.
424.8, for screw gearing, and see (3) Note supra.
469+, for control lever and linkage systems.
526, for stops for levers.
553, for knob or dial operators.
640, for gearing.
813+, for assemblies of general utility, including turret mechanisms for metal working machines having means to index rotary members, and see the Notes thereto.
SEE OR SEARCH CLASS
116, Signals and Indicators, 200+, provides for indicators attached to, or associated with some movable device to indicate the movement, adjustment or position of such device. Indented
241+, provides for radio tuner position indicators. Class 116 will take shaft positioning means with respect to its support (even though in the form of a mechanical movement) in combination with the indicating means when only the part of the shaft positioning means with respect to its support necessary to operate the indicator is claimed, i.e., where no structure for positioning the shaft is recited which does not operate the position indicator.
192, Clutches and Power-Stop Control, 138+, for power-stop limit controls and see (2) Note, supra.
235, Registers, appropriate subclasses for related operating devices for registers and particularly
12+, for those which are key board operated.
318, Electricity: Motive Power Systems, appropriate subclasses for controlled electric motor operators, particularly
560+, for servo controlled operators and see (2) Note, supra.
336, Inductor Devices, appropriate subclasses for variable transformer or inductance structure combined with shaft positioning means, and see (3) Note, above.
361, Electricity: Electrical Systems and Devices,
271+, for specific variable condenser structure.
403, Joints and Connections,
230+, for joints between the end of a shaft and a plate-like member.
455, Telecommunications, 150.1+, for radio receivers with tuners, see (3) Note.
