US PATENT SUBCLASS 331 / 58
PLURAL FUNCTIONS SIMULTANEOUSLY


Current as of: June, 1999
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331 /   HD   OSCILLATORS

58PLURAL FUNCTIONS SIMULTANEOUSLY


DEFINITION

Classification: 331/58

(under the class definition) Subject matter wherein the oscillator circuit is provided with means for performing at least one other function in addition to the generation of oscillations, which other function is independent of and is intended to be performed concurrently with the production of oscillations by the oscillator. An example of the type of plural function system falling within the foregoing definition is that of a vacuum tube circuit that simultaneously acts as an amplifier of extraneous waves of one frequency and as an oscillator with respect to waves of a different frequency, there being no mutual interaction between the two waves.

SEE OR SEARCH THIS CLASS, SUBCLASS:

37+, for beat frequency oscillators wherein a single electron tube oscillator may act as a frequency converter, the oscillations generated by the oscillator being combined or mixed within the tube with externally supplied oscillations to produce in the output of the tube a beat frequency which is the algebraic sum or difference of the generated and supplied oscillations.

59, for oscillator systems that may be selectively converted from an oscillator to another type of electrical system, such as an amplifier, or detector, or to another oscillator of a different type.

60+, for oscillators with plural output circuits, especially indented subclass 61 wherein the plural outputs are of diverse wave forms.

SEE OR SEARCH CLASS 330, Amplifiers,

1, 82, 93, 101, 104, and 112 for subject matter including plural function amplifiers which also operate as oscillators simultaneously.

332, Modulators, appropriate subclasses, wherein a single electron tube circuit may perform the dual function of carrier frequency generation and modulation.

455, Telecommunications,

321+, for heterodyne receiving systems utilizing a frequency converter system wherein a single electron tube circuit may perform the dual function of local oscillation generation and signal frequency mixing.