(under subclass 13) Subject matter wherein the actuator is constructed to facilitate the application of a force thereto, and to mechanically move or deform in response to this force to provide a mechanical movement for the operation of the variable resistor, the force being substantially greater than necessary to operate the resistor.
(1) Note. Since force is the most common method of operating mechanically variable resistors, a mere knob, pedal or handle as an actuator is not sufficient for classification here. The force sensing mechanism must be able to respond directly to forces substantially greater than or bearing little relationship to the force necessary to adjust the variable resistor or to overcome any spring loading of the variable resistor for classification in this subclass. Pushing, pulling and torque are examples of the forces sensed by the subject matter of this subclass.
(2) Note. When the resistor strain gage is disclosed for making a quantitative measurement, proper classification is in Class 73, subclasses 862+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5, for dynamometer type strain gauge resistors.
36+, for a variable resistor with a condition sensing actuator producing a force by a fluid or gas pressure. 68+, for mechanically adjustable or variable resistors; especially subclasses 99+ for such resistors of the compressible type; and subclass 167, for such resistors with spring loaded angularly slidable contacts.
SEE OR SEARCH CLASS
73, Measuring and Testing,
133+, for dynamometers.
177, Weighing Scales, appropriate subclasses, for weighing scales.
