(under the class definition) Oscillators wherein the frequency of the oscillator is determined by the mechanical period of vibration or oscillation of an electrically driven material body, the material body constituting a mechanical resonator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, for automatic frequency stabilized oscillators wherein the phenomenon of molecular resonance is utilized to control the oscillator frequency.
78, for electrical noise or random wave generators which utilize the random translatory motions of charged particles for generating fortuitously related waves.
94, for molecular or particle resonant type oscillators (e.g., maser).
116, for electromechanical resonator controlled transistor oscillators.
SEE OR SEARCH CLASS 310, Electrical Generator or Motor Structure,
15+, for the structure of reciprocating motors.
318, Electricity: Motive Power Systems,
114, for vibration producing motor systems, and subclasses 119+ for reciprocating motor systems.
330, Amplifiers,
94, and 109 for linear amplifier systems having frequency responsive means in a feedback path which may be of the electromechanical resonator type; subclass 174 for linear amplifier systems which have an electromechanical transducer means in the signal coupling means of the amplifier.
332, Modulators, particularly
139+, for frequency modulators utilizing an electromechanical resonant element.
333, Wave Transmission Lines and Networks,
148+, for delay networks of the electromechanical transducer type, and subclasses 186+ for wave filters of the electromechanical transducer type.
367, Communications, Electrical: Acoustic Wave System and Devices, 141+, for underwater transducers of the electromechanical type.
